I had a stock bore and stroke 340 in a 1967 Valiant ( the car swifter has now ) and I ran a best of 6.67 @ 102 in the 1/8 and a best of 10.53 @ 128 in the quarter putting it on the bumper every run . I had another low compression 340 + .030 that was 9.2 comp I ran on Ultra 94 pump gas that went 10.69 @ 126 I shifted it at 8200 RPM it loved to rev that was back in 1998 nobody believed that it was a smogger but it was :burnout: