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I agree, why do that. If you are staying with the 302 then the C4 is the most logical choice. I'm not even sure there is a bellhousing for attaching a C6 to a small block 302. The C6 is also a bit of a power hog and I can't see that benefiting a 302. My Cougar has a built up 302 and I still have my C4 with a few mods.
sounds like the C4 is staying for now, my next question is what kind of gear ratio would be best with this set up? like i said it has a mild 302 and the axle is a 9in but i have no idea what ratio it has right now. The truck is used to tow a boat in the summers and runs great but is hard on gas on the freeway. at 60 im pushing about 3000 rpm