Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

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Old Jan 24, 2008 | 01:11 PM
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Question Please Help me

Can someone please tell me exactly what i need in order for a lt1 t56 to mate up to my gen 1 sbc. (phisically bolting it up and the clutch and everything working as is should, thrust bearing, ect.)

I know that i have to get a driveshaft made, and that ill have to make my own hydraulic clutch setup. (or is it possible to use a cable?)


Thank you very much.
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Old Jan 24, 2008 | 03:33 PM
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I think you've pretty well got it covered......an the LT1 block is for all intensive purposes the same as the gen 1 sbc and your trans should bolt right up.
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Old Jan 24, 2008 | 06:52 PM
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The lt1 t56's hydraulics will work just fine. You will need to fabricate a mount on your clutch petal for the rod and cut a hole in your firewall to mount the hydraulics. If your sbc is a 2 piece rear main you will have to get a different flywheel. Mine was 2 pc main and im using a centerforce flywheel (jegs part number 183-700173). Fidanza also makes one but its aluminum if you want to go that route. Its jegs p.n. 383-198661. Oh, and dont forget the pilot bearing.
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Old Jan 24, 2008 | 07:27 PM
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Originally Posted by Strokinit383
The lt1 t56's hydraulics will work just fine. You will need to fabricate a mount on your clutch petal for the rod and cut a hole in your firewall to mount the hydraulics. If your sbc is a 2 piece rear main you will have to get a different flywheel. Mine was 2 pc main and im using a centerforce flywheel (jegs part number 183-700173). Fidanza also makes one but its aluminum if you want to go that route. Its jegs p.n. 383-198661. Oh, and dont forget the pilot bearing.
What is the difference? bolt location? (flywheel)
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Old Jan 24, 2008 | 11:21 PM
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Originally Posted by 71Chevelle
What is the difference? bolt location? (flywheel)
153 tooth ring gear vs. 168 tooth (Gen1)
Also the thickness of the flywheel is different than that of the gen 1.
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Old Jan 25, 2008 | 05:37 PM
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Originally Posted by 71Chevelle
What is the difference? bolt location? (flywheel)
1 piece rear main engines have a 3" bolt circle (as I remember) where the flywheel bolts to the rear of the crank, the 2 piece versions have a 3.58" bolt circle. Also, a 1 piece rear main crankshaft requires a flywheel with a counterweight on it to balance the engine and make up for the weight (that square flange on one side) that's been removed from the crank flange.

I have a 1992 Z28 with an SBC and a T56.
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Old Jan 25, 2008 | 07:51 PM
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You might check at Chevytalk.com under their performance section too.

Jim
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