the larger top ring gap is for KB hyper pistons due to the location of the top ring...as being higher on the pistons...

the speed pro or seal power pistons use standard ring gaps for their bore sizes.


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)