They worked pretty good for what they were. They were the B1BA. They had come off of a dirt engine. They were angle milled to try and get as much compression possible with a stock stroke 360. I used them on a 408. Compression was 15 to 1. In a 3300 lbs./with driver Dart, best E.T. was 11.07 @118. Track elevation 1350. DA was around 3800.
