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

1986 Tpi engine replacement push rods?

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Old Mar 22, 2023 | 01:12 PM
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Default 1986 Tpi engine replacement push rods?

What are the correct push rods for a 1986 corvette with aluminum heads?

Last edited by projectpunisher; Mar 22, 2023 at 06:48 PM.
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Old Mar 22, 2023 | 02:38 PM
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I forget was 86 flat tappet camshaft? 7.8
if roller 7.2
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Old Mar 22, 2023 | 04:10 PM
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Originally Posted by Tunedport90
I forget was 86 flat tappet camshaft? 7.8
if roller 7.2
not sure I’m reading now that it is a non roller, so I’m guessing I have to buy 7.8 pushrods is this correct?
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Old Mar 22, 2023 | 04:10 PM
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So in 87 the only difference was they made it a roller?
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Old Mar 22, 2023 | 04:14 PM
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It's not so much a question of what it WAS - What is it now flat tappet or roller?
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Old Mar 22, 2023 | 04:17 PM
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Originally Posted by WVZR-1
It's not so much a question of what it WAS - What is it now flat tappet or roller?
It’s a 100% stock engine, I did pull a valve out to look at it and it was flat with no roller on the end of it.

Last edited by projectpunisher; Mar 22, 2023 at 06:51 PM.
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Old Mar 22, 2023 | 04:56 PM
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Will these work COMP Cams 7812-16 High Energy 7.794" Long, 5/16" Diameter Pushrod Set?

Last edited by projectpunisher; Mar 22, 2023 at 06:51 PM.
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Old Mar 22, 2023 | 09:41 PM
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Or these Melling Pushrod MPR-34-B? Which one of these?

Last edited by projectpunisher; Mar 22, 2023 at 09:47 PM.
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