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Rocker Arm / Valve-question

Generation III Internal Engine 1997-2006 LS1 | LS6

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Rocker Arm / Valve-question

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Old

Oct 9, 2014 | 11:05 PM

#1

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Rocker Arm / Valve-question

Hello!!
Im doing some mods on my stock c5z:
-215 PRC heads
-Ms3 cam with hardened pushrods (7.4)
-and bolt on

My mechanic had this problem today...1.4mm or 0.0551in of lash..
I need help on this please! What could be the problem?

Thanks in advance for your help

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Old

Oct 9, 2014 | 11:19 PM

#2

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From: Iowa

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Did you use a pushrod length checker? The only thing I can see it being is the pushrods are to short.

Old

Oct 9, 2014 | 11:25 PM

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No i dont...but i didnt change the ratio of the rockers, the lifters are for ls7 but should be the same as the stock ones, shouldnt the pushrod length be stock 7.4? By the way this lenght was recomended by TSP when i ordered the parts.

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Oct 10, 2014 | 06:35 AM

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From: Little River SC

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did u use a thicker head gasket?

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Oct 10, 2014 | 08:45 AM

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From: Little Rhody

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He didn't verify the wipe and he didn't measure for the correct pushrod.

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Oct 10, 2014 | 09:35 AM

#6

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Quote:

Originally Posted by farmington

did u use a thicker head gasket?

Nop. The same thick as stock.

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