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

85 TPI forged internals?

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Old Sep 11, 2003 | 08:59 PM
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Default 85 TPI forged internals?

this is probably a stupid question, but i heard that 85's have some forged internal goodies
is there any truth to this?
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Old Sep 11, 2003 | 09:19 PM
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Default Re: 85 TPI forged internals? (Bilyk)

Yes. Mine had forged pistons, but a cast crank and 2-bolt block.

Dan
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Old Sep 11, 2003 | 09:41 PM
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Default Re: 85 TPI forged internals? (Bilyk)

Yes, Trw Pistons.
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Old Sep 11, 2003 | 09:55 PM
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Default Re: 85 TPI forged internals? (Corvette0096)

but a cast crank and 2 bolts... that makes no sense ?!?
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Old Sep 11, 2003 | 10:00 PM
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Default Re: 85 TPI forged internals? (Bilyk)

Later Yr's got no forged parts..
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Old Sep 11, 2003 | 10:01 PM
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Default Re: 85 TPI forged internals? (Bilyk)

The forged pistons were leftovers from the C3 parts bin, so they used them on the 85.

2-piece rear main seal, cast crank and 2 bolt mains
1-piece started in 86, 4-bolt main didnt start til the LT1 engine in 92
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