Used 350 SBC $150.
I just bought a compression tested 350 SBC for $150. (off Craigslist) The mileage is unknown, however the compression tests looked good, between 135-150. The unknown, the block is I believe a GM crate or a Jasper. That's what I don't know. The block # is 3970010, the heads are 3417368 & 3417369. Can someone tell me the HP of this? Is this an aftermarket engine? The block numbers show they were made from 1968-1979, however the head numbers were from 1990 & newer. Anybody have any info on this?