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

Will LT1 or LT4 valve covers fit on a stock TPI L98? Pics?

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Old 05-16-2002, 04:37 PM
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MDC9966
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Default Will LT1 or LT4 valve covers fit on a stock TPI L98? Pics?

I like the cool look of the black covers. Do these interchange from late 86 with Al heads to the the LT4? Will they hit on any thing?
Anyone with pics?
Thanks
Old 05-16-2002, 04:37 PM
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scorp508
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If I remember right the later covers do not have the required holes for PCV valve or ther breather on the passenger side.
Old 05-16-2002, 05:19 PM
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Ruby6spd
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Default Re: (scorp508)

If I remember right the later covers do not have the required holes for PCV valve or ther breather on the passenger side.
yep, the passenger side valve cover does not have those provisions
Old 05-16-2002, 08:53 PM
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-=Jeff=-
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Default Re: (Ruby6spd)

If I remember right the later covers do not have the required holes for PCV valve or ther breather on the passenger side.

yep, the passenger side valve cover does not have those provisions
but other then that they will fit
Old 05-16-2002, 09:00 PM
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LPDesRoche
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Nothing a hole saw can't fix. Simple as that.
Old 05-17-2002, 05:33 PM
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gtsyellow
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Default Re: (LPDesRoche)

do we really NEED 2 breathers?
Old 05-17-2002, 08:54 PM
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FIBERGLASMD
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Default Re: (gtsyellow)

What year did GM switch the 350 valve cover mounting to 4 bolts down the center? I know my 88 pickup had down the center mounting on it's 350.
Old 05-17-2002, 09:41 PM
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scorp508
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What year did GM switch the 350 valve cover mounting to 4 bolts down the center? I know my 88 pickup had down the center mounting on it's 350.
Late 1986 when the Corvette got aluminum heads.
Old 05-17-2002, 09:44 PM
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FIBERGLASMD
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Default Re: (scorp508)

One more trivia question. Is the aluminum headed 350 (L-98) the same as a ZZ4 crate motor?
Old 05-17-2002, 11:05 PM
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Default Re: (FIBERGLASMD)

One more trivia question. Is the aluminum headed 350 (L-98) the same as a ZZ4 crate motor?
mostly the same.. but the ZZ4 has a more aggressive cam
Old 05-18-2002, 12:52 AM
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Default Re: (-=Jeff=-)

the zz4 head has no egr and also a slightly raised exhaust like .1" higher and slightly better flow

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