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

Cylinder Head Install

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Old Jun 1, 2009 | 12:06 PM
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Originally Posted by Dolfan
If I had one that would be a great plan I lost all four! I think folks have given me the right spec and I can pick some up tonight to try.
just take your plenum in and measure threads with that all the threads on the plenum are the same as those fuel rail bolts.
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Old Jun 1, 2009 | 02:15 PM
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Originally Posted by jeffp1167
just take your plenum in and measure threads with that all the threads on the plenum are the same as those fuel rail bolts.
Do you mean the black torx bolts from the runners to the plenum????? I can't say for sure but I think those are way bigger in diameter than those that hold the fuel rail down?

I'll look tonight when I get home.
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Old Jun 1, 2009 | 02:25 PM
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Originally Posted by Dolfan
Do you mean the black torx bolts from the runners to the plenum????? I can't say for sure but I think those are way bigger in diameter than those that hold the fuel rail down?

I'll look tonight when I get home.
the ones on mine are the same thread
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Old Jun 1, 2009 | 02:45 PM
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Old Jun 1, 2009 | 02:48 PM
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Originally Posted by USAsOnlyWay
OK, I'll check that out, I would have never guessed that.
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Old Jun 1, 2009 | 03:22 PM
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Originally Posted by jeffp1167
just take your plenum in and measure threads with that all the threads on the plenum are the same as those fuel rail bolts.
If the statement above is correct, the bolts you want are M8x30mm
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Old Jun 1, 2009 | 09:47 PM
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Back on track! The ACE hardware had the right items and at 44% off as they are moving!

Fuel Injection on! Starting to piece things together.



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Old Jun 1, 2009 | 10:02 PM
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Nice, were they M8s?

I hope my guess didn't lead you astray.

Looking good!
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Old Jun 1, 2009 | 11:37 PM
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Originally Posted by USAsOnlyWay
Nice, were they M8s?

I hope my guess didn't lead you astray.

Looking good!
Yep M8X35, worked great.
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