4.33 GM 12 Bolt Gears

[scuncio]

I came across a set of original GM 12 bolt gears in a 4.33 ratio, P/N 3936481 and 3936482. Anyone know whether these have the 'COPO' heat treat?

Thanks
Tony

[PxTx]

I've not posted for a while and haven't been following things here but recently met Nova Jed last weekend when he was visiting my pop, Plowman. Kinda got me in to visiting the site again and this question was a familiar one.

Kinda reads a little cheesey, but I asked a similar questions years back. Seemed like the word back then was these gears were Pontiac offerings and nothing speacial aside from the uncommon ratio.

http://www.yenko.net/ubbthreads/showflat.php/Cat/0/Number/3349/page/0/fpart/1/vc/1

Hope to be hanging around again.