I have a new BHJ sfi, I think it weighs only like 6.5 lbs. USA. I've used one BHJ damper and it slipped the outer ring after just a couple trips to the track on a mid 11 sec 440. BHJ fixed it, but offered no explanation or anything on the failure. I'll never use another one from them.
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
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