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Old 12-03-2012, 05:23 PM
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1990 Chevy SWB clutch question

I have a 1990 Chevy C-1500 that originally had a 4.3 liter V6. When I purchased the truck the motor had been swapped to a GM 290hp crate engine from jegs. I am confused on what clutch I need to replace the one in it? It has the nv3500. I know that the motor is direct replacement for 80's model pickups, so the rear seals are different. Can anyone help me? Thanks. Looking at the hayes supertruck clutch.

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Old 12-03-2012, 06:08 PM
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What size ci is the engine? Since there were several v8 options that year I'd start with a part number cross check to see if any of the same fit.
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Old 12-03-2012, 07:12 PM
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Its 350. They had only offered clutches for the 4.3 liter V6's and the 305's that I can see. I'll keep looking. Was hoping someone had done the swap and knew right off.
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Old 12-04-2012, 02:18 PM
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There's no reason to believe the p-o used anything other than the 4.3L clutch, is there? No reason you couldn't use it too, as long as the clutch diameter will fit your flywheel. If the 305 clutch is bigger- again, as long as it fits the flywheel- use it. But I doubt there's any difference.

Be sure to resurface the flywheel, and it's a good idea to replace the pilot bearing while you're at it.
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