This is a rebuilt 454 bore to a 468. The motor is a 4 bolt main with a steel crank and new aftermarket rods. The pistons are new 10.1 pistons and the heads are 049 that have had some port work done. The cam is a hyd Comp cam 280 with a double roller timing chain. The intake is an aluminum Victor Jr intake. The distributor is aftermarket. The valve covers and timing cover are fab aluminum. This is a really nice pro street motor. It was built for a car I had but I sold that car so no longer have a need for the motor.