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Worn out stock LS1 rockers?
This is a discussion on Worn out stock LS1 rockers? within the Internal Engine forums, part of the LSx Technical Help Section category; I have almost 90k miles on my 2000 SS and the rockers are worn out. Is this normal for this ...
12-01-2006, 04:42 AM #1LT4VetteGuest
Worn out stock LS1 rockers?
I have almost 90k miles on my 2000 SS and the rockers are worn out. Is this normal for this engine?
12-01-2006, 08:24 PM #2
no not really at all. why do you say they are worn out? whats wrong?
12-01-2006, 08:49 PM #3
- Join Date
- Aug 2005
- Thornton, CO
Red Tint Jewelcoat
- 2008 Trailblazer SS
Please describe the problem with them.
I am running my stock rockers on a fairly large hydraulic cam in a stroker LSx. So far so good.2008 Trailblazer SS
Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
Lowered, HID's, tinted.
1999 Pontiac Trans Am WS.6 #1747 SOLD
531.1 RWHP 481.3 FT/Pounds all motor.
12-02-2006, 02:22 AM #4LT4VetteGuest
12-02-2006, 05:56 AM #5
some have worn out prematurely to the point where the needles fall out and end up in your oil pan. so, this will be a good time to replace them with either newer stock ones or aftermarket ones.
12-03-2006, 04:39 PM #6
Will replacing rockers w/ after market 1's add significant power?
12-04-2006, 03:27 PM #7
12-04-2006, 05:09 PM #8
12-04-2006, 05:28 PM #9
The valve cover clearence is the main reason why people don't buy the rocker arms because then they have to buy new V/C's or spacers. Not sure about the specifics, never ventured due to the V/C problem.
12-04-2006, 05:33 PM #10
the vinci/crane rockers i use have zero valve cover clearance issues. i use the 1.8 acclerated lift rocker kit. kit has rockers, guideplates, shorter chrome moly pushrods, locks, and studs. this will make the valvetrain adjustable.
here's the dyno results with stock cam and stock tune
12-04-2006, 05:36 PM #11
of course, i didn't listen to those people.
12-04-2006, 05:52 PM #12
Yeah, alot of people use the stockers and that is very impressive in itself! Although it does limit your cam specs, but I am glad to see the gains you got from your install! The only thing I dont like is the adjustability, leaves room for error.
12-04-2006, 05:58 PM #13
on LS1 motors, if you cut hte heads, you have to get different length pushrods. also, some aftermarket cams have smaller base circles. this, again, necessitates buying different length pushrods. at least, with an adjustable setup, you don't have to keep buying pushrods. i've seen too many issues due to improper pushrod lengths vs an adjustable system.
12-04-2006, 05:58 PM #14
niceeee I lilkeeeee ... as far as adjustable ... can you just batten them down to *making no noise and go* or is their specifics you need to deal with on these?
Bigger rockers are the only internal mod I'm planning and do not want issues at all especially pcm tuning ..
12-04-2006, 06:07 PM #15
the vinci/crane rockers come with very clear instructions on how to adjust the preload on them. the hardest thing is finding zero lash. after that, it's cake.