The current engine I have currently built for the Challenger is 512 RB stroker 4.25" crank 13.5 cr B1BS cylinder heads mechanical cam from my friend Scott Brown. Engine was built by the late Kenny Stafford funny car driver. I still remember when he called me with the dyno results from breaking the engine in. It made 700 flywheel hp.

Granted I have become bored with drag racing. I enjoy driving the cars and not waiting around all day.

Ill probably pull some compression out of the engine and knock a little power out of it. Might get it down to 650?