I think I'd send them back to Wiseco and get my money back. Then go to a piston manufacturer who knows what they're doing. Or just call Dan (DRAM) at Performance Only and he'll hook you up w/ a good set of Diamond pistons.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax