And thank you. I have been working around these engines for a long time but I have learned more in 4 of you videos than I have in a long time.

@cuttersperformance

Жыл бұрын

I appreciate that!

I’m finishing up my 906 vortecs. I’ve got the comp retainers, blue LS6 springs, the pioneer screw in studs and a comp XR270HR with .495 x .502 lift with 1.5 rockers. I have the chance to get som NIB Comp 1418 1.6 roller tips at a really good price. Would I have enough clearance with .030 locks? I was worried about rocker tip to keeper clearance if I used .050 locks. Or would I be better to buy some stamped or other 1.5’s? *Have you ever used the XR270HR? I’m building it for a truck engine. It’ll only ever see low speeds and mostly low rpm. Thanks!

Very informative video thank you sir

Thank You for more good in formation , who would have thought to check .

im running some z28 .550 lift springs with inner damper removed and stock retainers/keepers with the ghetto grind and after grinding i measured like .600 clearance between the bottom of the retainers and valve seal lol. total investment only $30-40 for the springs off ebay and time spent grinding the bottom of the factory retainers.

@quietcool4884

2 жыл бұрын

Same here, been running it 8+ years with zero problems.

Great videos, I'm learning a lot from you but still have a couple of questions. I am usingg the Fel Pro valve seals 72861 and bottomed them out when I installed them. My current cam has .454/.454 lift and I'm using the stock 1.52 rocker arms. I watched your video and did the math regarding if I swap to 1.6 ratio rocker arms, this would put my cam lift at .47789/.47789. Do you recommend enlarging the holes that the pushrods go through for this set up? Obviously it is the safest route, but my engine is all back together and running well. I wasn't clear if this is only necessary when using 1.6 arms AND swapping to a cam with over .480 lift.

@cuttersperformance

2 ай бұрын

If the heads were off, I would recommend drilling them as the 1.6 rocker arm will shift the push rod over. But with a lower lifter cam, I'd be surprised if you ran into clearance issues

@kasensdaddy

2 ай бұрын

Thanks for the reply, the heads are back on the engine already. I will plan to keep the .454 lift cam going forward, just don't want to break stuff if I decided to swap to 1.6 rocker arms.

What are the torque specs for self aligning rockers on vortecs 062 comp cam mag long slot 1.5 rockers,hardened pushrods stock length 1piwce,summit intake, lunati cam 489/504 lift

I have a vortex with 1.6 scorpion roller rockets. If the car cold is quiet but ask the car get hot the rocket start rallying the valve covers.. and a suggestion. I have put tall valve covers on them

@cuttersperformance

3 жыл бұрын

So its a rocker tick? Typically if you have a tick when the engine gets hot its usually two things -The rockers are not adjusted correctly - low oil pressure when warm causing the lifters not to be pumped up

Pat I have watched all your videos about the vortec stuff. I’m needing to know what specific arms I need to run for the beehive .550 lift springs, .030 offset keepers and of course new retainers and seals. My cam is the summit 8802 (525/520 lift) it’s the “summit branded” GM LT4 Hotcam, it has very similar specs. I get overwhelmed because I’m trying to piece all this together so I don’t have to go cutting on the only set of heads I have. Can I use some 1.5s or are 1.6s a must? I’d like to keep the 1.5s so I can stay with that 525 lift range because I think itd be best for these stock heads. Thanks man, you’ve been a big help. I just need to wrap up my plans lol.

@cuttersperformance

6 ай бұрын

You dont have to go to a 1.6 but you cannot use the stock 1.5 rockers. Its too much lift for them. They are not a long slot rocker

@clarksgarageofbadhabits6803

6 ай бұрын

@@cuttersperformance I found Jegs part number 555-20921 what do you think about these??

@cuttersperformance

6 ай бұрын

Those should work, haven't used those exact ones though. You may have to file the centering nubs slightly on the intake valves to ensure they dont push on the keepers/retainer. Another option would be the PRW 0835019. They fit under stock valve covers no problem aswell.

@clarksgarageofbadhabits6803

6 ай бұрын

@@cuttersperformance Thank you so much!

@cuttersperformance

6 ай бұрын

@clarksgarageofbadhabits6803 no problem anytime!

Can you make like a shopping list as to what to buy and do to use ls bee hive springs and get around .500 to .520 valve lift? 😂

Thank you for all the knowledge! The channel is awesome!! I'm actually building a 350 Vortec. Have the blues, offset retainers and the full set of threaded studs. My Cam is a Melling Class 2 M22280 with .495/.502 lift. So based on this video, I wonder if I just can avoid pushing the retainers if I replace the stock rocker arms for a set of full rollers. So I'm thinking about stock 1.52 ratio. It'll be great, right?

Man these are the things others don't tell you, like the offset keepers and retainers won't work with full rollers, i was looking and considering a 1.5 full rollers for last couple days while my heads are in the shop for clean up and screw in studs, i guess i'll get those 1.52 ones, little more power maybe over a 1.5 full roller, would rather have 1.6 but i think the blue ls2 springs/alexs retainers and offset keepers would be a little too close for comfort with that additional lift

If you are using the 787-16 retainers, offset keepers and a set of full roller rocker. How would you get around the guides on the tip of the rocker hitting the retainers?

@cuttersperformance

3 жыл бұрын

You'll probably have issues with full roller rockers. You lose too much of the valve tip getting the correct installed height. You would have better luck with roller tip rockers like 1417-16. I tell guys if they want to use full roller rockers your better off getting the heads cut for guide plates and using non self aligning full rollers

Teaching me some new things thanks man ur very much appreciated brother

@cuttersperformance

Жыл бұрын

Thank you appreciate you checking out my video

Thank you very much. I’m running a 290hp/350 with Vortec heads. .450/.460 lift. 114 lsa sucks but it works. Looking forward to trying 1.6’s. Thank you!!

@cuttersperformance

3 жыл бұрын

If you dont want to pull the heads you should be OK at that lift with the 1.6 rockers. Install the arms set the lash and make sure you have atleast .010 clearance at all times

@Buck_Em_Garage

3 жыл бұрын

PISS-CUTTER Performance awesome, I very much appreciate the help and your videos. Thanks man!

@cuttersperformance

3 жыл бұрын

@@Buck_Em_Garage no problem at all, let me know if you have any more questions!

@Buck_Em_Garage

3 жыл бұрын

PISS-CUTTER Performance thanks. I’ll let you know how it turns out.

@Buck_Em_Garage

3 жыл бұрын

Installed the 1.6 roller tip rockers last Saturday, very noticeable difference. The push rods are much closer to the bottom of the hole in the heads but still enough clearance. I have to re-jet, the 1.6’s made things very lean at cruising.

What is everything rocker wise you'd recommend I do for running an lt4 hotcam? its .515 lift with 1.6 but .492 with 1.5

@cuttersperformance

6 ай бұрын

I used the PRW roller tip 1.6 ratio. They are good quality, will fit under stock valve covers, and are a decent price

@Bw40099

6 ай бұрын

@@cuttersperformance thanks you are awesome helped me a TON with picking parts for my L31

I have bought 3/8 crane full roller rockers for my vortex heads in a . 060 over 350 chevy. And then I learn from you about self alinging rockers and. Shit I saw a video with you putting in 7/16 studs& guides but I can't find the tool

What valve seals do you recommend for doing the Vortec beehive/retainer swap? Did you put factory style seals back on or is there a slightly better aftermarket option? I have the Springs I have the retainer but I'm hesitant on putting stock valve Shields back on it. It's not if they will feel good or not it's long job it's a it's longevity and is there a better seal out there that is a direct replacement, no machining?

@GMC4240

Жыл бұрын

Felpro ss72861 are stock replacement. They work great never had a leak. Good Viton seals and don’t interfere with lift at all like a positive seal would and Umbrellas are junk.

Can you do 1.6 rockers with stock springs or do you have to get beehives

@cuttersperformance

Жыл бұрын

Like with a stock L31 cam?

just curious, i got a set of heads with screw in studs, is there any advantage to running guided rockers vs. guide plates? also, i got the comp .477/.480 lift, do you think that would be fine with stock rockers?

@cuttersperformance

6 ай бұрын

.480 lift is about the max you want to run with stocker self aligning rockers. If you have guide plates, Id just run an aftermarket non self aligning rocker arms

@westogarage

6 ай бұрын

@@cuttersperformance okay, thank you so much for the information! Just curious though, is there any advantage/disadvantage between the two styles of rocker arms? Because technically I can run both. I just don’t really understand. I haven’t been able to find too much about it.

@cuttersperformance

6 ай бұрын

@westogarage really the only disadvantage of self aligning rocker arms is that you got to be careful what retainers/and keepers are used becuase you need to have enough valve tip height for the rocker to center on. One thing you have to watch out for with non-self aligning is that you have to use a hardened push rod that can be used with guide plates. Either one will work fine but you'll find that there will be more options and better prices on non-self aligning

@westogarage

6 ай бұрын

@@cuttersperformance yeah, that’s what I figured, these are the first heads that I’ve got that say, they can use both, usually I am only used to heads that use one or the other.

This was very helpful info !! But I wonder if this info of .480 max lift with stock springs and retainers before hitting valve guide holds true for TBI heads too ??

I'm running a 500 lift cam on stock vortec heads that have a 475 max lift. How can get move lift with machining valve guides?

How do you check the stock rockers actual ratio..... Dial indicator on both sides both valve and pushrod then divide

If using your suggested part numbers for the beehive set up with The Comp Springs comp retainers and the crane cams offset keepers for higher lift what self aligning rockers would give you suggest to give the best chance to have a good roller to valve contact patch

@cuttersperformance

2 жыл бұрын

I typically use the 1417-16 with vortec heads. Be sure to check for rocker to retainer clearance if using .050 offset keepers and self aligning rockers

If I am planning on using a .480 lift cam will I need to drill out the push rod holes?

@cuttersperformance

Жыл бұрын

You should be fine with stock ratio rockers, but if the heads are off, you might aswell drill them

Kind of related, but will the steel full roller rockers clear the valve cover bolts? The ones shaped like the comp ultra pro magnums. I know they make aluminum narrow body but I’d like to run the steel type if I can.

Awesome video thank . I have a question I have a 1991 gmc sonoma with a 4.3 none Balance shaft engine bottom end has been rebuilt . I would like to add some vortec heads and a cam intake and carb nothing extreme are there any heads out there that will be just a bolt on where I can use the regular rocker arm because I heard something about the studs that are on the vortec heads needs changed is that true thank you You last question my current heads only have two bolt holes on passenger side for accessories and newer vortec heads have 3 holes will my accessories still line up thank you again

Does anyone know which tools would be needed to cut the head for valve guide plates and also installing harden seats?

Got a part number for the prw rockers? I’m seeing two different 1.6 ones for sbc

@cuttersperformance

6 ай бұрын

PRW Self alight 1.6 with 3/8 for vortec head is part# 0835005

@Bw40099

6 ай бұрын

@@cuttersperformance one last question timing wise what should I do for initial timing and total gonna be a stock motor other than the cam and stuff for the heads

I have made it to .507" valve lift with stock rockers,

@cuttersperformance

3 жыл бұрын

Wow do you know how much clearance you have to the rocker stud? That's more than I would be comfortable running

@jamest.5001

3 жыл бұрын

@@cuttersperformance yeah, it was years ago, I was young and dumb, I have been known to break studs, pushing things so far, studs and springs! Just because there is a clearance, when assembled, doesn't mean it will stay that way! Ha-ha, When they say .550" lift they mean it! .565" was a bit too much! Like 10lbs in a 5lb bag!!

@cuttersperformance

3 жыл бұрын

Yeah cause I pulled apart a motor last year where the guy had a .500 or so lift cam (stock vortec rockers) and you could see wear pattern on the studs from it bottoming it out! Haha not good

Love the channel watched many videos while rebuilding my sons truck. The question I have about 1417-16 comp rockers they are the 1.52 but im reading more into the the comments about 1.6 which r part #1418-16 getting more hp we are installing 12499224 beehive springs and and comp 787-16 7 degree retainers and 648-16 locks and screw in collarless studs on his vortec heads while running a 480/489 lift cam. Your thoughts

@cuttersperformance

2 жыл бұрын

If you have enough retainer to seal clearance, then the 1.6 rocker will work nicely. Be sure to drill the push rod holes in the heads to 1/2 inch

I know this is a older video but I am upgrading to Vortec heads a d untake for my L48 Corvette. I will be running a L79 Cam that supposedly has 447 lift. I pulled the rocker studs because some of the threads were buggered up and because if I decide to upgrade later I won't have to worry about all them shaving in my motor. If I upgrade to bee hive springs are there any draw back running them springs with a lower lift Cam?? I'm just trying to think of future upgrades and work I can do before I put the heads on.. thanks

Can the self aligning rocker arms be used on older perimeter bolt SBC heads?

When should I use guideplates and necessary modifications to cylinder head for said plates. Im building your vortec budget heads. Much appreciated

@cuttersperformance

2 жыл бұрын

Guides plates are not necessary unless you dont want to run a hydraulic cam. I've used self aligning rockers (not stock ones) on all types of builds and they work great 👍

have a set of vortec .have a 480 388 cam .all stock rockers.can i use a set of aluminum rollers and still not have to change the push rods thanks

@cuttersperformance

3 жыл бұрын

If your pushrods pattern good now then you should be ok with rockers of the same ratio. But its always a good idea to check the pattern Make sure you get self aligning! If you dont have guide plates

@tj484

3 жыл бұрын

@@cuttersperformance thanks

What 1.6 vortec self alignment rockers would you suggest? I'm going with a .489 lift

@cuttersperformance

3 жыл бұрын

I've used many sets of the comp cam magnum 1.6 roller tip rocker arms without any issues Just make sure to check the rocker arm to retainer clearance if you are using offset keepers

LOVE YOUR CHANNEL!!!! Just “found” you doing vortec search and now I’m subscribed!!! You are a crazy awesome wealth of knowledge!!!! Question…….. I have a solid stock 80’s 350 with old smog 76cc crap heads,60 psi no smoke great platform to build my mud bogging mini monster Jeep power on. Based on the info I’m learning from you, I’ve ordered the pieces you stated ( ls6 blue springs, comp retainers, .050 offset keepers, etc…. Ow looking at cam and rockers….. in another video you used the Melling 22301 cam, and it seems perfect for me! My question is two fold…. If I used the1.52 or 1.6 self aligning it roller rockers instead of the 1.5 stock, how will that affect the cam/ engine in my case, and do I need to worry about valve- piston issues? What would the total lift be? What “changes” basically with the cam specs? Would this be better for my application, or am I better off staying stock? What difference (at the cam) is there between 1.5 and 1.52? So sorry for the long post, but honestly, after seeing and learning from you and your videos, I have only trust in your knowledge!!!!!!!! My email if it’s easier for you, sir. Fbpd227@yahoo.com Thank you in advance!!!

@davenkaren2572

2 жыл бұрын

Sorry, sent this before the math part of the 1.6 rockers, AND wasn’t aware that all vortec were 1.52 ratio, vs 1.5 standard sbc rockers, but when I read the Melling cam specs, assume it’s based on the old 1.5 Chevy ratio, so I guess most of my question is still intact. I am NOT a cam guru, and can spin wrenches, but the magic combo info you have is like high level magic!!!

@cuttersperformance

2 жыл бұрын

Hey man! The stock rocker vary abit, they are somewhere invertwen 1.49 and 1.52 depending lol Youll also find that alot of aftermarket rockers are more. For example I used a set of 1.6 PRW rockers and they actually worked out to be 1.67 Its cam lift × rocker ratios = total lift Or Total lift ÷ rocker ratio = cam lift But to know exactly what the lift is, a dial indicator is used on the retainer once the heads are installed

@davenkaren2572

2 жыл бұрын

@@cuttersperformance THANK YOU!! AWESOME CHANNEL!!!

I bought a gm performance 290hp crate engine years ago. I believe it has the .450/.460 cam. Looking at changing to vortec heads and roller lifters. What do I need to look out for if I stay with similar lift cam? Will stock vortex rockers work well with roller lifters like Hayward’s retrofit lifters or others with the link bar? I know I’ll have to change pushrod length.

@cuttersperformance

3 жыл бұрын

You should have no issues with stock vortec rocker arms as long as you have pushrod length correct and not more than .480 lift

@Buck_Em_Garage

3 жыл бұрын

I did this to my 290, left the cam in it and installed 1.6 rockers with vortec heads. Works well.

Hey Patrick, I like watching your shows in my spare time They are very informative. I'm curious, what is the max lift for vortec lifters, bones and steel spider set up handle? Thanks Leslie

@cuttersperformance

Жыл бұрын

Its kind of a hard question to answer becuase it depends on the base circle of the cam but typically .365 lobe lift (.550 lift with a 1.5 rocker) is the max you can run

@lesliekish3229

Жыл бұрын

WOW ! THANK YOU For answering my question so quickly. I've sent questions to a couple of other channels, months ago. Still no response. So thanks again for the quick response and taking the time to answer my question, and pointing out how the cam base circle is also part of the calculation. Sincerely Appreciated Leslie Kish

@cuttersperformance

Жыл бұрын

@Leslie Kish no problem! Happy to help. Thanks for checking out my videos

ok so i have a tricky question here. i have 9.5:1 comp ratio vortec motor with a lunati torque cam. .416/.447 lift to stay with safe specs. valves were slightly over adjusted to give some more head room and detune the engine. its all hydraulic roller and within adjustment range just a little less lift on stock heads. was also afraid it wouldnt like pump gas at full lift. 9.8ish comp ratio if i did the comp cams springs and retainers and added 1.6 rocker arms it should be more than within safe zones right? even with proper valve adjustment? valve seals have already been replaced with stock felpro properly instead of half on like factory. i would imagine lift would be .480 or less maybe .472/.473 most likely .468 safe lift should be over .500 .525 if everything checked out. i keep telling myself to just pull the heads and get the shaved down guides and all that but its a daily driver in the nice months. extremely good mileage and in a very light vehicle fresh rebuild why pull it apart if i dont need to. i feel like letting it breathe at proper limits with my safe zone in place is best . but if im pulling it apart and replacing springs and retainers the 1.6 rocker arm seems like the only sensible choice. atleast on the intake side even granted vortec heads dont have a problem inhaling but i dont think it would suffer from breathing a little better. motor runs too cool and is happy on good 89 or better but doesnt like 87 it will pull spark timing if running under good 89. full fuel injection i just dont want the valve seals being too close to a heat source or under possible valve float and hit a seal.

@cuttersperformance

3 жыл бұрын

With a hydraulic cam you can't really play with lash for clearance like you can with a mechanical cam. You run the risk of popping clips put of the lifters ect... Send me a email with your combo and cam specs pcperformance1@outlook.com I can help you put with a spring kit you can add without pulling the heads or cutting the guides

@chehystpewpur4754

3 жыл бұрын

@@cuttersperformance gladly will shoot u an email. and yes with hydraulic you cant adjust much but you can do some fine tuning but it will limit max lift slightly. i didnt like doing it but id rather be safe than sorry if a valve were to float with the stock springs. redline is 5500 so its not like it sees that much but when it does id like it to see idle again without repairs lol. she made it a season detuned and id like to see her full potential someday

My cam is .454/468..so should I get long slotted rockers at 1.5??and the springs cam with the cam kit

Who makes the best self aligning roller tip rockers if the stock ones are no good past 480 lift?

@cuttersperformance

3 жыл бұрын

Comp cams 1418-16 work very well and I have used them many times. Be sure to check your retainer cleanace!

@georgeferrer23

3 жыл бұрын

@@cuttersperformance I bought the Elgin industry's 1.6 long slot self aligning rocker arms. I heard they were pretty good.

I just broke down my motor it has older vortex heads 14102193 heads and I'm thinking of upgrading to summit racing 96-2002 heads will I need to upgrade the rockers and push rods?

@cuttersperformance

Жыл бұрын

If you swapped from 193 swirl ports to vortecs, you could reuse the push rods and rockers arms. Pushrod length should be checked when any component is changed though

@dane1154

Жыл бұрын

@@cuttersperformance one last question what intake should I go with I have to switch from a 12 bolt to a 6 bolt intake. Thanks for the reply appreciate you man.

What's the procedure for changing the rocker arms on 5.7 vortec engine while it is still in truck. The last rocker arm on driver side has excessive play.

So the stock Vortec 5.7 with its l31 heads ARE self aligning right? What would I need to put a hydraulic flat tappet cam ( Camshaft #24502476) into it? I’m building a spec engine for a series and they just mandate the l31 heads with that cam… but don’t mention anything else. Is it possible to do this without changing anything?

When Shopping for a cam. Summit says the lift is based on factory rocker size. are they referencing the older style 1.5:1 or do they also count the 1.52:1?

@cuttersperformance

Жыл бұрын

Usually 1.5 but even thats a estimate as the factory rockers arms are 1.5 ish haha

Where can I order one of your kits for vortex heads spring kit's

@cuttersperformance

3 жыл бұрын

Send me a email pcperformance1@outlook.com

@bobpeters1621

3 жыл бұрын

@@cuttersperformance How much is your vortec beehive spring retainer package? Thank you.

I have a 94 chevy k1500 with 5.7 tbi and I'm putting vortc heads on it. Cam and everything is stock and I was needing to know if the stock tbi rockers or the vortec rockers would work.

@prestonwoodall6122

3 жыл бұрын

I was planning on using the same pushrods out of the tbi too

Is it normal to have the int valves a bit taller than the exh valve but the retainers all look the same height

@cuttersperformance

2 жыл бұрын

How much taller? Shoot me a email with pics Pcperformance1@outlook.com

Dear I have v6 4.3 vortec heads , i add ultra comcams 1.52 rocker , what shuold i do ? Help me please

Have you done anything with a promaxx vortec heads are they any good

@cuttersperformance

2 жыл бұрын

no yet but id love to flow and port a set!

Do roller rockers fit under stock valve cover? I have a 98 chev 5.7 vortec

@cuttersperformance

3 жыл бұрын

They will usually hit the bracing around the bolts. Comp cam roller tip rockers fit though

When using the Ramjet cam , as I will , with the LS6 Beehive springs , can I use the 1.6 rocker arms safely without a push rod length change ? Thank You .

@cuttersperformance

2 жыл бұрын

Push rod length should always be verified after a cam or rocker change but the stock length should be close

I'm running with a compition cam 8-500-8 cam with 480 intake valve lift and 488 exhaust valve lift. I want to change the rocker arms to the 1.6 long slot self aligning rocker arms. do I have to change the pushrods? Please let me know.

@cuttersperformance

3 жыл бұрын

If you current pushrod are correct then you should be ok, always a good idea to pattern it out to make sure. Another thing to check is to make sure you have pushrod to head clearance with the 1.6's

@georgeferrer23

3 жыл бұрын

@@cuttersperformance Thank you so much for this information. I had my heads machined and had them milled down the valve guide's with threaded studs. Hopefully I should be ok.

@cuttersperformance

3 жыл бұрын

@@georgeferrer23 are the heads still off? If so drill out the push rod holes with a 1/2 drill bit and you'll will never have a problem

@georgeferrer23

3 жыл бұрын

@@cuttersperformance Yes they are off as we chat. Ok I will most definitely drill a 1/2 inch hole. Thanks again for your input.

@georgeferrer23

3 жыл бұрын

@@cuttersperformance I wonder which retainers and springs I should use being on a budget.

I’ve got a 400 sbc that I will be putting a new cam in. The cam is undecided. I’m wanting to use vortec heads and get the lift up by doing the beehive ls springs with the retainers and off set keepers. Planning to do screw in studs. Are there any self aligning rocker arms that are best for this set up? I don’t entirely understand why u would drill the push rod holes. But would I need to do that for retainer to rocker clearance?

@cuttersperformance

2 жыл бұрын

Comp cams 1417-16 work well. You drill the push rod holes to give more clearance from the push rod hitting the head. This is especially needed when running 1.6 rocker arms.

Can I use roller tip rockers that are stamped steel just like stock with no guide plates??

@cuttersperformance

2 жыл бұрын

As long as they are "self aligning"

I’m having my 2003 4.3 vortec rebuilt. I was gonna have them add 1.6 rocker arm with a roller tip. What else should I ask them to do and add to the heads since I’m adding the 1.6?

@cygnus1965

Жыл бұрын

What did you end up doing. I am building a 4.3 with the roller top 1.6 and having a couple issues I don’t like seeing here. I’ve installed guide plates but didn’t have any machine work done. They seem to be the least of my trouble.

Hey have a lt4 hot cam 4.92 lift what's a setup I need for no issues I have ls6 springs and 767-16 retainers should I get the offset keepers and be fine or should I replace the rockers to and if anything else please let me know thanks

@cuttersperformance

3 жыл бұрын

I think you send me email lastnight and I replied to answer all your questions Cheers!

So on my TBI to Vortec swap, I can use my 1.5 rockers and the same push rods?

@cuttersperformance

2 жыл бұрын

Assuming nothing else has been changed, then yes. Those are self aligning rocker arms and the push rods length should be good aswell. Always a good idea to check the pattern though

I have a 94 5.7 mercruiser in my boat. I want to put vortec heads,performer intake,comp cam extreme marine 270 cam and holley 650. Can I use the vortec factory rockers and the push rods that are in the motor now?

@cuttersperformance

3 жыл бұрын

You will need self Aligning long slot rocker arms, push rods might be ok depending on how heavy of valve spring you go. I usually go overkill and get hardened one peice push rods to be safe

@BerryMcCaulkiner859

3 жыл бұрын

@@cuttersperformance thank you

Not sure how to direct message you. Been watching your channel and subscribed. That’s good stuff sir. I heard you talking about running 1.6 rocker. What is all necessary to achieve the clearance? In your experience what has made better performance cam or just 1.6 rocker arms?

@cuttersperformance

3 жыл бұрын

Install screw in rocker studs (if using upgraded springs) and drill the pushrod hole to 1/2 inch to run 1.6 rockers. You will get better performance with a cam swap over just adding 1.6 rocker arms with a stock cam

Thanks for all the info on the vortecs on your channel. I bought a car with vortecs and I think the previous owner missed a few things and was a bit optimistic with his cam choice. He had 0.474 lift with no machining and factory rockers, and what seems like maybe the 916 springs. Many of the damper springs have broken and left witness marks on the spribg tower. Thanks to the info on your page I felt comfortable going with the 26906 springs, 787 retainers and then 1.6 self aligning roller tip rockers with a 0.466 lift cam.based on 1.52 ratio. I'm going to do the screw in studs as well. Fingers crossed it all works out

@cuttersperformance

3 жыл бұрын

Awesome glad to hear your getting it all fixed up! Feel free to ask if you have any questions

@ramsaymccreary6754

3 жыл бұрын

@@cuttersperformance Thanks man, hopefully I don't, but if I do I'll definitely reach out. Also found out the coolant bypass issue, the heads didn't have the holes and there was no hose from pump to manifold. Going to drill the Stat like you recommended 👌

@cuttersperformance

3 жыл бұрын

O awesome! Make sure to check for cracks in those heads if they didn't have a bypass

@ramsaymccreary6754

3 жыл бұрын

@@cuttersperformance yeah, I will definitely be doing that. I had a quick look and they seemed alright, but will take a much closer look now

@cuttersperformance

3 жыл бұрын

@@ramsaymccreary6754 hopefully as is well! Be sure to check out my porting/flow videos coming up, should be fun and considering you already have the heads off haha Cheers!

Do I need to change pushrod length if I go with 1.6 ratio rockers?

@cuttersperformance

2 жыл бұрын

If nothing else is changed other than 1.6 rockers then the pushrod length shouldn't change

@glennsawyer2065

2 жыл бұрын

@@cuttersperformance So I assume if I use beehive spring and caps that it would change need to change the push rod?

@cuttersperformance

2 жыл бұрын

@@glennsawyer2065 if the springs are changed but not the valve length then technically the push length shouldn't change. Some things that affect push rods length: deck height, head gasket thickness, camshaft base circle, head milling, valve length, lifter height. It should always be checked when changing any valve train components though

Hey @Piss-cutterPerformance I have this ht383 I’m building and the cam is fairly mild .451 lift @1.52 looking to put in 1.6 rockers for extra lift Im guessing I’l to drill the 1/2 push rod holes And also replace the stock springs while im at it, What are your thoughts bolt on the Crane 550 lift springs? Ive heard I won’t have to do any machining down ? I’m looking for the best plug a play solution brother

@cuttersperformance

3 жыл бұрын

You won't get .550 with the stock retainers Those springs might handle. 550 lift but the retainer will hit the seal before then Usually max .480 lift with stock retainers and keepers

@pedrocollazo4437

3 жыл бұрын

Great explanation brother I just seen your “how to check for max lift” and I will now be going with the offset retainers so I can use 1.6 rockers and for more lift Thank you @Piss-cutter Performance

Hey Pat I made quite the discovery messing around with my stock 062 vortec heads tonight. Measuring stock vortecs from retainer to seal clearance I got 0.461 which is to be expected. What I noticed was my valve seals were not seated all the way down to the heads, which I assume is wrong? So I pressed them back down all the way flush with the block, remeasured and I got 0.531 valve to seal clearance. That being said given I have proper springs, in theory I could run up to a 0.490 lift cam? Is that correct? Was considering a beehive kit, maybe it is unnessary now? Is hamming my seals all the way down incorrect? Just wondering your thoughts. I have pictures of my measurements and all aswell, I can send you an email if you want to see for yourself.

@cuttersperformance

2 жыл бұрын

No that is correct, often times the seals are not seated all the way down onto the guide. Stock vortecs are usually good for .460 to .480 lift (depending) and obviously a spring upgrade is almost always needed to run any decent roller cam

What would you Recommend to buy?

@cuttersperformance

2 жыл бұрын

For rocker arms. For a good upgrade that isn't too expensive. I've had good luck with Self aligning 1.52 Comp cams part# 1417-16

@88classic

2 жыл бұрын

@@cuttersperformance thanks .. you don't have to reply back but you do and I Appreciate that 👍🏽

@cuttersperformance

2 жыл бұрын

Happy to help man

what 1.6 rocker arms are you using ?

@cuttersperformance

2 жыл бұрын

Typically on the vortecs i use the comp cam roller tip, but jve also used the PRW roller tip

@adancortes3568

2 жыл бұрын

@@cuttersperformance also do you know where i can get the pin out diagram for the 0411 swap in a 97 c1500 , having trouble finding it

@philipcarpenter9647

2 жыл бұрын

Have a question just replaced timing chain in Colorado 2900 vortec had engine on stand flipped it upside down to put oil pan on 4 or 5 of my rockers fell what holds them tight to cam shaft no bolts just seem to float on pushrod and valve, thanks.

Great video. I can't believe this question wasn't here. What do you reccomend as far as an lt4 hot cam goes in a vortec? Get the machine work done on the bosses and rocker studs, install ls6 springs and 787 retainers, or get aftermarket heads? I'm worried about pulling rocker studs.

@cuttersperformance

3 жыл бұрын

You can do the rocker studs yourself, check out my video. If you take your time its not bad to do at home. Ls6 is probably the lightest spring you want to use on a lt4 cam but it will work

@jacobjarvis2545

3 жыл бұрын

@@cuttersperformance I used the ls6 springs with the 787 retainers on my vortec heads. Im running a solid flat tappet cam and set lash at 18 thousandths valves are to tight need to back them off but heard you can't go more than 25 thousandths bc the rocker arm can/will slip up off the end of the valve tip any suggestions?

Hey is there away to actuall talk to you get a hold of ya

@cuttersperformance

3 жыл бұрын

Feel free to shoot me a email pcperformance1@outlook.com

@larryayres7412

2 жыл бұрын

@@cuttersperformance love your channel!!!! I’m putting my 97 5.7 back together stock cam , it’s a hydraulic roller motor. I’ve got a set of 1.6 crane cam Roller rockers will it work with Stock pushrods??

@cuttersperformance

2 жыл бұрын

@@larryayres7412 like stock length or actual stock push rods?

@larryayres7412

2 жыл бұрын

@@cuttersperformance stock push rods with 155,000 miles on them. They are comp cam 1.6 roller rockers but they are old school rockers don’t know if they will work on a 97 vortec 5.7?? Just getting into the vortec/ LS motors so I’m used to pre vortec/ ls builds. Your help is much appreciated!!!!!!!

@cuttersperformance

2 жыл бұрын

@@larryayres7412 it depends on what springs your using, stock springs those push rods should work for you no problem. The length should be good even with the 1.6 rocker as long as nothing else has changed. The rockers need to be self aligning rocker arms. This means the rocker arm has two little notches that align itself on the tip of the valve. Check out my video on vortec rocker arms

Do you build engines for people?

@cuttersperformance

3 жыл бұрын

Yes I do, as a job and also at home as a hobbie haha

@mattholt6492

3 жыл бұрын

How do I contact you and where are you located?

@cuttersperformance

3 жыл бұрын

Send me a email pcperformance1@outlook.com

Alex'sparts.com he has extra clearance spring retainers it gave me an extra .24 of clearance. After cutting everything down for more clearance I had enough to run a .620 lift cam even though I dont have a cam that big it's still a good piece of mind