So many of these aftermarket dampers fail after such little use it's ridiculous.
I've run stock old dampers on a few engines I raced and never had a problem.
The only one I had fail was a BHJ damper...it replaced a stock damper b/c I was worried about it, lol. BHJ repaired it, but refused to discuss the issue.
What about the BHJ failed? It slipped the outer ring over an inch after my first trip to the track w/ it. Called them, sent it back, got it back a week or so later "repaired". Tried calling them to talk to someone about it and they wouldn't talk to me. I sold it cheap.
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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