KULTULZ, it's a date Code 1957 312 sleeved down to a stock 292 bore. stock 312 crank and rods. 10.5:1 forged domed probe (Mummert) pistons. Clay Smith 292S cam. Mummert 4v dual plane aluminum intake with a edelbrock 600. I bought the engine as a abandoned project a couple years ago. The headers...