my little 340 ran ok . it was 30over with bme dome tops (11.1 comp ) and had a comp cam soild in it 282xs 520/540 j heads mild clean up work flow 240/140 at 550 and a x-cal intake with a 950 hp carb 8" turbo action verta 727 rev. mvb and 4.57 gears and 28*10.5 slicks ( had qtp street tires) and it ran a best of 7.44 with a 1.67 short time with the slicks and 7.5x with the qtp with 1.67/1.7x short times all in full body 70 duster no back seat.frame conn. and 6deg. nose down pinion angle...i feel it should have went a little faster but i sold the short block before i could work out the frontend..the car would just crack the front tire off the line but the 60' should have been better to me.. hope this help..mike also this was through the muff. With 38 total timing locked out