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

L98 timing cover+oil pan bolts?

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Old 07-15-2011, 01:28 AM
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Sober1
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Default L98 timing cover+oil pan bolts?

A beloved family member cleaned my garage for me............We cannot find oil pan, timing cover bolts now.

Can someone help w bolt dia x length x pitch?

Thank you,

Darrell
Old 07-15-2011, 01:51 AM
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USAsOnlyWay
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El Goog says:

Oil Pan: 1/4-20 x 1/2, 5/16-18 x 9/16
Timing cover: 1/4-20 x 1/2

Buy a couple and check though.
Old 07-15-2011, 03:16 AM
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GREGGPENN
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Originally Posted by USAsOnlyWay
El Goog says:

Oil Pan: 1/4-20 x 1/2, 5/16-18 x 9/16
Timing cover: 1/4-20 x 1/2

Buy a couple and check though.
Yep, there are two sizes for the pan bolts. Front and back ones are the bigger ones IIRC. Plus, there are nuts. In fact, there's 3 or 4 stud/double-nutted bolts used to anchor KS shield and 1 or 2 other items.
Old 07-15-2011, 05:03 AM
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Ricky 91 vette
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i dont know how to mesure the threads and i still cant figure out how to load pics here, so pm me ur e mail, and i'll send you pics in the morning of the pan nuts and screws, i just got my pan down today, and im planing to install it back tomorrow with the new gasket
Old 07-15-2011, 08:20 AM
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Muffin
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USA is spot on however on my 85 the front right corner pan fastener is a stud which holds a support bracket for the oil cooler pipe. Also there are some number of studs(not many) which hold clamps for the transmission cooler lines. Not sure about yours but may be worth checking.

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