I have a 25+ year old Fluidamper on my 446" wedge motor. Freshened it up a couple times, no problems w/ it.
Have an ATI on my hemi...no problems there.
I had a BHJ damper years ago on one of my 440s...slipped the ring about an inch after the first trip to the track with it.
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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