TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Roller Rockers

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Old Apr 6, 2003 | 06:23 PM
  #1  
firebirdconv92's Avatar
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Joined: Jan 2003
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From: North West Indiana
Car: 2001 Silverado (I miss my 3rd gens)
Engine: 4.8
Transmission: 4L60E
Roller Rockers

I just finished reading about the valve lash and was wondering if i have to perform this task if i just change the rockers on my L03?

1992 Firebird conv.
Flowmaster exhaust
Open element filter.
Ram Air hood (No box yet)
Reprogrammed computer chip

(Give me a break, I'm only 17 and trying to shut down some Civics)

:rockon:

Last edited by firebirdconv92; Apr 6, 2003 at 09:44 PM.
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Old Apr 6, 2003 | 06:26 PM
  #2  
arrowcamaro's Avatar
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From: Chester, VA
Car: '88 GTA
Engine: L-98
Transmission: T-56
yes you will.... its not hard at all though
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Old Apr 6, 2003 | 08:30 PM
  #3  
dimented24x7's Avatar
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Welcome aboard

The only thing you have to be careful of is when your nearing zero lash. Its very hard to feel when your using the "spin the push rod" method. I heard a good sugestion a while back to use a .015 or something like that feeler gauge and place it b/w the valve stem face and the rocker. When you feel drag on the feeler gauge, you know your almost there. The preferred method is to do the lash w/ the motor running but this is messy. Adjusting the lash hot w/ the engine running will give you the quietest results. Teh main reason i bring this up is that on my crate engine, even the "professionals" at the gm plant in mexico couldnt adjust the lash right. Whoever adjusted it tightened all the rockers down untill the lifters bottomed out. The engine ran like crap untill i adjusted teh lash. Do a search on the tech/general engine board and youll learn more tehn you ever wanted to know on settingthe lash.
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Old Apr 6, 2003 | 09:59 PM
  #4  
JR305's Avatar
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Joined: Dec 2001
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From: Chandler AZ
With roller rockers it is much easier to find 0 lash than with the stock stamped rockers. It’s not hard at all to do, plenty of info on the board. I just go to 0 lash and then 1/2 turn after that.
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