How about just drilling and tapping the 420 bolt pattern(stock Chevy, etc.) in the 302 bellhousing? Make sure the bellhousing has the correct retainer diameter.
Originally posted by Sidehill:
I got a good deal on a 1953 GMC 302 hoping to replace the stock 228 in my 51 GMC 1-ton. The 302 came with a bellhousing, 6 bolt flywheel, clutch, and pressure plate. The problem is that the bellhousing wont bolt up to the SM420. The top holes on the bellhousing are ~7.75" apart, bottom are ~ 7.25 apart. On the SM420 the top holes are 8.25 apart, bottom 9" apart. I cant use the 228 bellhousing because it isnt as deep as the bellhousing that came with the 302, so that there isnt room for the 302 pressure plate. I also cant just use the 228 flywheel and thinner pressure plate with the 228 BH (having the correct bolt pattern) because the 228 FW is 4 bolt and the 302 FW and crank are 6 bolt.
Any Suggestions
Izzenhood
