I have a 52 Chevy 3100 that I've owned for about 8 months now. I'm the third owner of it and the previous owner intstalled a 250 with a TH350 tranny. The rearend is out of a 72 half ton (12 bolt with what I believe is a 3.07 ratio). Everything elso is stock except for front disc brakes which I just finished installing. The kit was from Classic Performance Products.

My question is this: The old 250 is starting to smoke a little and I suspect the rear seal is going out because I see a lot of oil on my drip pan in the garage. Instead of spending money on rebuilding the 250 I've been thinking about putting in a small block v-8. How hard is it to put in a v-8 on these AD's. How well does it fit? For example will I run into problems with the stock steering box? Does the radiator need to be moved forward? etc. I see that Chevy duty sells bolt in motor and tranny mounts for v-8's
I plan on keeping the TH350 and using that with the V-8. Any advice is greatly appreciated!!

Thanks ahead of time.