318 build for light weight BCuda 4 speed car

toolmanmike said

The 273's had a 9 1/2 in. clutch and a cast iron bellhousing. The later 318/340/360 went to a aluminum bell and a bigger clutch. (10 or 10 1/2") You can put a 10" clutch on the small flywheel with a scalloped pressure plate. Parts stores have them if you look up a slant 6 truck or you can get the set up from Brewers.

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The 10 inch clutch with the scalloped pressure plate will explode if rev’d as done in drag racing. I would not want to give an actual safe rpm limit, but I would be uncomfortable taking a 10 inch scalloped pressure plate above 6000 rpm. A couple of slant six drag racers have had those truck pressure plates explode, not to mention that they don’t have much holding power. Even if the rpm’s are limited, a good slant will scorch a slant truck pp in a few passes.