It is a Chevy 350cid. it has a mild cam from summit with .420/.442 lift and 262/272 duration. It also has a used edelbrock performer aluminum intake. It also has an old mallory points distributor with an accel super stack coil. I put all new seals and gaskets all around, it was a leaky motor when we first got it. most of the parts, except for the camshaft were things found in the garage. This S10 is a budget build, and my first project car/truck.