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Topic: 72 BB water pump pulley

in Forum: C3 Cooling and Heating Systems


72 BB water pump pulley

Posted: 10/10/07 5:38pm Message 1 of 3
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Oklahoma City, OK - USA
Joined: 4/1/2007
Posts: 432
Vette(s): 1972 LS5 Convertible,Auto.Targa Blue with Black Interior.

I need some help. This car did not have a water pump pulley when I got it. I found one for a 66-70 BB #3889372. The one for a 71-74 BB is #3992071. I have installed a high flow water pump and it has a big shaft. My problem is if I take this to the machine shop and make the hole fit the shaft will it work on my 72. I don't know the differance in two.

Thanks
Lonnie.



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72 BB water pump pulley

Posted: 10/10/07 7:19pm Message 2 of 3
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Will the belts line up, is the question!
You can have the center hole opened up, as long as the grooves on the pulley are where you need them, and the fan bolt holes are correct.
I'd make sure the machine shop knew what they were doing, and get the hole exactly centered...


Joel Adams
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72 BB water pump pulley

Posted: 10/11/07 3:32pm Message 3 of 3
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Former Member
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Oklahoma City, OK - USA
Joined: 4/1/2007
Posts: 432
Vette(s): 1972 LS5 Convertible,Auto.Targa Blue with Black Interior.
Thanks Joel, we have a few good hot rod machine shops here in Oklahoma City, I should be all right on that part. It looks like the belts line up but I'll have it drilled out and see. Its hard to tell without it going over the shaft.
 
Thanks a lot
Lonnie 



in Forum: C3 Cooling and Heating Systems


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