It's my opinion that "Dale's Damper" ,find him online,does a better job,less money,faster turnaround.Dale will talk about original specs,durometer rubber readings and all that technical crap if ya like.
A small block damper will sorta bolt on if ya can deal with the pulley situation.But it's "tuning" is well beyond the rpm range of most old 6's
Any 50 year old used damper is well beyond it's lifespan,the rubber gets hard or oil soaked and doesn't do it's job any longer.No big deal for seldom driven low speed engine.But for engines built up turning higer rpm's,well,why spend $$$ on a buld up only to bolt some stone age damper on the front?
Lots of mysterious things can happen from an old damper,premature bearing wear,crankshaft cracks,loose flywheels.
