C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Pushrod length (89 L98)

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Old Jan 5, 2004 | 06:42 PM
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C10 JDR's Avatar
C10 JDR
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Default Pushrod length (89 L98)

I have fitted 1.6 rr, and the rocker seems to favour the outside of the valve stem.

What is the standard length of the pushrod, and should I go shorter or longer?
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Old Jan 5, 2004 | 07:05 PM
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65Z01
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Default Re: Pushrod length (britvette)

Our stock pushrods are:
7.195" long
5/16" od

When I installed 1.6:1 ProMagnums I used stock length hardened pushords and they were pretty well centered across the valve stem tip. That's with tightening 1/2 turn + 1/8 turn past zero lash.

You could get a length checker pushrod from say Comp Cams, adjust it to center the rocker tip and compare it's length with that of the stock pushrod.
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Old Jan 6, 2004 | 05:40 AM
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C10 JDR
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Default Re: Pushrod length (65Z01)

Thanks for that info, I needed it to buy the correct length adj. pushrod, to do as you suggest.

:cheers:
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