I'm trying to install a 302 in my 51 GMC 1-ton and have a problem with the flywheel. I can't use the bellhousing that came with the 302 because it mates to a Clark 5 speed and my truck has the SM420. My 228 bell housing won't accept the thicker 302 pressure plate even when I try the washer trick. I can't use my 228 pressure plate on the the 302 flywheel because the flywheel has a raised lip where the PP bolts go such that my 228 pressure plate would be held to far away from the flywheel to engage.

My question is, can I have the ~1/2" lip machined off of the 302 flywheel and then use my 228 pressure plate? I forgot to mention that I can't just use my 228 flywheel because it is 4 bolt and the 302 is 6 bolt.

Thanks for your help

Izzy