413 block bored to 4.25, 3.75 stroke, so the motor is a 426.
9.6:1 cr with ross pistons. Comp xe275hl cam, 231/237 at 50, .525 lift.
440 source heads ported by ou812/IMM. RPM intake with 770 holley street avenger vac sec carb.
Made "only" 470hp and 486 tq on the dts dyno.
