Engine was .040 over, basic E58 with a 68 340 4 speed cam, double roller timing chain, Mopar high volume water pump, Air Gap intake with a 750 Edelbrock performer carb, 340 clutch fan, stock Mopar electronic ignition. Never had it on a dyno, but the numbers suggest it made around 330 to 350 hp. Those 13.8 passes were on drag radials at 19 psi. Best ever was 13.78.