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

L83 motor

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Old Nov 15, 2008 | 02:25 PM
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84 owner
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From: Crystal Lake Il
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Can someone tell me if the L83 is supposed to be a 2 bolt main or 4 bolt main block?

I just pulled the pan and my engine is only a 2 bolt main. Perhaps, the engine is not original.

Does anybody know? It might explain the lack of power if It really isn't an L83.
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Old Nov 15, 2008 | 02:40 PM
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From: Clifton Park NY
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Originally Posted by 84 owner
Can someone tell me if the L83 is supposed to be a 2 bolt main or 4 bolt main block?

I just pulled the pan and my engine is only a 2 bolt main. Perhaps, the engine is not original.

Does anybody know? It might explain the lack of power if It really isn't an L83.

Its a 2 bolt main. Lack of power is probably due to a restrictive intake.
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Old Nov 15, 2008 | 02:45 PM
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From: Near Lockport NY Black 1986 Coupe
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Originally Posted by qws
restrictive intake.
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Old Nov 15, 2008 | 03:06 PM
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84 owner
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From: Crystal Lake Il
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Thanks. I am in the middle of changing the cam, lifters, and rockers but had to drop the pan to get the timing chain cover back on. I was a little surprised that it was 2 bolt main but it's not a high revving engine.

Thanks again!
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