I don't know if it's a common trade but I found a guy in Oregon who replaces the rubber in old balancers. I just shipped him my 3 groove, and he claims a two day turn around, for $115 plus shipping.

THERES SEVERAL THAT OFFER THIS SERVICE.

I didn't realize that. I kept searching using yahoo. The people that do don't seem to advertise very well

Should post some links or websites or direct email address to help him out.

WELL DAMPER DOC,S IS ONE AND HERES ANOTHER ONE
http://www.damperdudes.net/advanced_search_result.php?=&keywords=gr

thanks. guess I should have asked first lol.

I'm using a reman from Rockauto.com ( DORMAN Part # 594031 ) $60.
'75 C30 4.8L. It's only a 2 groove, I don't need 3.
4 years, 15K mi. no problems.

I don't think mine came with A/C, but it did have an Alt, PS, and an AIR system. I know that you can bolt an accessory pulley to a 2 groove, but I figure why not use the original?

Gentlemen,
How does one amount a Fluid Damper Harmonic Balancer, or TC Rattler on a 1979 250 and still maintain the grooved pulley to drive the alternator and water pump? Thank you.
Regards,
Ken

I just turned a hub that fit inside the front of the damper and mounted a flat pulley to that, taking care to have negligible runout.