I have a 215 and powerglide along with a nova rear and in my 1941 chev 1/2 ton p.u. I've really never got to drive it very much as its still a work in progress.I had it varily drivable and then other projects interruped. Just a week ago I moved it back into work stall and reattack it. I did drive the 63 or 64 tempest it came out of. It was a very nice smouth running engine and it and trans. was FREE. I think the only difference is a smaller bore if I remember right. I am hoping to end up with a low budget, good mpg, shop truck. I think it odd that pontiac was so proud of it that they cast thier division name in the block so no body could misstake it. 1 OL REDNECK