Water pump pulley ID HELP?

[Racefan]

I purchased what is supposed to be a 68 BB Camaro waterpump pulley (non-AC,non-PS). Got it, looks great....but no ID number that I can find. Where would they be, and is there someone I can email some pics to so they can tell me if this is right? Thanks in advance for your help.

[MrMotion]

Go to the Camaro Research site to get the pulley numbers and a picture. www.crg.org

[Kurt S]

We considered that domain name (it was available back then), but chose www.camaros.org instead.

[MrMotion]

Thankyou for correcting my mistake.

[Racefan]

Here is a picture of the two pulleys I have. The one on the left is a 69 L34/L35 with AC and/or AC PS and is not correct for my car (68 non-AC, non-PS). The one on the right is the one in question, there are NO numbers on it. Does it look correct? I searched on CRG website, but without numbers it didn't help me much. Thanks for any input!

[68SSCamaro]

I have seen the single groove water pump pulleys without numbers and I believe they were used in the earlier 60's on 283's and 327's. There is another part number for that style pulley but I don't have it here at work. I would have to check to see if the offset is the same for that pulley vs. the correct 68 pulley.

[Racefan]

The pulley without numbers was advertised as a 68 big block Camaro wp pulley. So, what I gather is that I was sold a "bill of goods" and there is no way this pulley was used for that application? Is that correct?

[Kurt S]

Yup, that's what I'd say.
In the pulley sheet, the last page lists the dimensions for the various pulleys. At least you can confirm it measure the correct OD.

[68SSCamaro]

The other pulley number I have is 3788472 CG. This is almost the same as the 3905995 pulley except the outer edge of the '995 has a pattern of marks. The '472 appears to have a different offset and I'm almost certain that it doesn't use the spacer while the '995 uses one (between the pulley and water pump). Hope this helps, if you need a 995 pulley send me a PM. Martin