Roller Rockers/ Hardened Pushrods/ Lifters; Stock Cam - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 20 (permalink) Old 04-11-2012, 04:50 PM Thread Starter
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Roller Rockers/ Hardened Pushrods/ Lifters; Stock Cam

So it turns out I need to replace one of the lifters on my 94 LT1, because I have to do all this work, I planned to install hardened pushrods/ roller rockers later this summer anyway but I need to know about what roller rockers/ pushrods/ lifters I should get for a stock cam.

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
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post #2 of 20 (permalink) Old 04-11-2012, 05:29 PM
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Are you planning on throwing a cam in later?

If not, no sense in running guideplates, or hardened pushrods. Just keep stock pushrods, and grab a set of crane/GMPP rockers. If you do springs, which would net you the biggest improvement, you can run a 1.6 ratio.

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post #3 of 20 (permalink) Old 04-11-2012, 06:23 PM
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Your stock pushrods should be hardened from the factory. Look for a little dimple on one end of them.

http://www.youtube.com/user/MysteryBird1?feature=watch
1995 TA: Converted Nose...381 LT1...4L80E...12 bolt...3.90 Gears...4000 TC
Best 1/4 10.78@ 124, 1.46 60ft, 3450lbs.
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post #4 of 20 (permalink) Old 04-11-2012, 07:10 PM Thread Starter
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I plan on camming it someday but due to financial strain, I can't really afford to do all that right now...It does need a new lifter but at the same time, with all that stuff taken apart, it would make sense to replace it all with upgraded parts, I'd rather not reuse the pushrods after fixing the lifters, unless I can keep everything in its place and just slide the pushrods in for re installation instead of having to turn the crank over and over again to put them all back.

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

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post #5 of 20 (permalink) Old 04-12-2012, 01:23 AM Thread Starter
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Real quick here, I can't afford to do a complete build right now but would Comp Cams lifter set be good for a stock setup until later on?

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

Horsepower doesn't win races, it sells parts and cars
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post #6 of 20 (permalink) Old 04-12-2012, 01:48 AM
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I have a set of comp cams lifter installed but i haven't finished my motor

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post #7 of 20 (permalink) Old 04-12-2012, 04:52 AM Thread Starter
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That's interesting, I was planning to make a deal with the shop tomorrow since I know the price here is going to be through the roof expensive...I would be able to take apart the rocker arms/ pushrods/ intake manifold and all that and then put it back together but I want them to do the final adjustments and tighten down all the rocker arms and inspect everything. I figure it would take me a couple days to remove everything and then while I wait I could have a set of Comp Cam lifters arriving in the mail, then by the time they arrive I'd be able to install them. Just out of curiosity, is there any advantage to using Comp Cam lifters instead of an OEM replacement quality?

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

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post #8 of 20 (permalink) Old 04-12-2012, 06:54 AM
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The "LS7" lifters are a great more cost effective alternative to the Comp cam lifters. Why would you not want to reuse the stock push rods, especially if they're hardened ones?

http://www.youtube.com/user/MysteryBird1?feature=watch
1995 TA: Converted Nose...381 LT1...4L80E...12 bolt...3.90 Gears...4000 TC
Best 1/4 10.78@ 124, 1.46 60ft, 3450lbs.
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post #9 of 20 (permalink) Old 04-12-2012, 12:41 PM Thread Starter
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Quote:
Originally Posted by Mystery Bird View Post
The "LS7" lifters are a great more cost effective alternative to the Comp cam lifters. Why would you not want to reuse the stock push rods, especially if they're hardened ones?
I really didn't think the stock ones would be good enough, I stand corrected. Where might I be able to get LS7 lifters?

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

Horsepower doesn't win races, it sells parts and cars
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post #10 of 20 (permalink) Old 04-12-2012, 12:57 PM
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I bought mine from Summit.

http://www.youtube.com/user/MysteryBird1?feature=watch
1995 TA: Converted Nose...381 LT1...4L80E...12 bolt...3.90 Gears...4000 TC
Best 1/4 10.78@ 124, 1.46 60ft, 3450lbs.
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post #11 of 20 (permalink) Old 04-12-2012, 04:23 PM
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Just make sure to adjust the rockers the right way and not tighten them down. If you are keeping it under 6,300 rpm (which mild cams will be) then I'd go 3/8ths SA and save the coin.

If north of 6,300 rpm or lots of lift I'd advise you to get NSA rockers and guideplates.



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post #12 of 20 (permalink) Old 04-12-2012, 05:10 PM Thread Starter
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So how about these for a stock cam?
COMP Cams 850-16 - COMP Cams High Energy Hydraulic Roller Lifters - Overview - SummitRacing.com
Also how much would a dealership charge for AC Delco replacements?

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

Horsepower doesn't win races, it sells parts and cars
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post #13 of 20 (permalink) Old 04-12-2012, 06:23 PM
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Quote:
Originally Posted by Deviance View Post
I really didn't think the stock ones would be good enough, I stand corrected. Where might I be able to get LS7 lifters?

GM Performance LS7 Lifters | WS6store.com

With free shipping that's $20 cheaper or so than Summit.

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post #14 of 20 (permalink) Old 04-12-2012, 08:59 PM Thread Starter
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Thanks, also as far as the Comp Cam lifters go, is the stock cam a hydraulic roller?

1994 Trans Am, LT1, A4 CURRENTLY TOTALED (R.I.P)
Soon to arrive: 1998+ LS1 Camaro M6

Horsepower doesn't win races, it sells parts and cars
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post #15 of 20 (permalink) Old 04-12-2012, 10:27 PM
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If you go into a dealership and ask for new lifters they will give you the LS7 lifters, factory part that replaced the part # for the LT1 lifters.

I've heard mixed reviews about the comp lifters.



Yep its slow.

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