No engine or trans came with it. But i have a 283 that im almost done building... that's why i bought the bel air. Actually worked out well convincing the wife i needed a bel air... i was like well i put all this money in the 283 and i need something to put it in. She went along with it which was astonishing.. got a friend with a th350 he will give me, and i have a 3 speed manual laying in a corner. OH YA i have a bunch of random original parts off the GMC i pulled off i may be down to part with. Intake, headers air cleaners extra transmission extra glass, wiring, brand new gmc center caps.. lots of stuff maybe ill post them.