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Old 05-20-2019, 11:35 PM   #4
Super Dude
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Join Date: Sep 2018
Location: Springfield Oregon
Posts: 112
Re: Clutch size for 71 C30 w/Big Block?

I had a 1970 C30 with a big block 402. It had a 12" 3 finger clutch. In that era, there are 168T & 153T flywheels. Big blocks will have the 168T. If you have a 454 it will have an externally balanced flywheel also.
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