Ok, I think I figured it out. The SBC pulley has a different depth. I found two pulleys that I was told was BBC.
Here are the numbers: Crank: 3937787 Water Pump: 3890419 Now, is it true that the long water pump pulleys are the same bbc, and sbc? If anyone can confirm that these will fit BBC, I'd appreciate it. Thanks Charles ------------------------------------------------------------------- Check out my 502 powered '65 Malibu Super Sport Project http://www.65ss.com ----- Original Message ----- From: "65ss.com" <[EMAIL PROTECTED]> To: "The Chevelle Mailing List" <[EMAIL PROTECTED]> Sent: Tuesday, August 17, 2004 9:22 PM Subject: [Chevelle-list] BBC vs. SBC Pulleys > Ok. I'm sure everyone is sick of the all the questions about big blocks, > but I finally got the 502 in the car. Now I need to hook up accessories. > What is the difference between the sbc lower pulley, and the bbc lower > pulley? I am saving up for the serpentine system, but I'd sure like to > crank the engine before that. I have a 3 groove sbc crankshaft pulley, and > it appears to line up. > > I just don't want to dish out $100 for a 3 groove crankshaft pulley, when I > really do plan on going serpentine. > > Charles > ------------------------------------------------------------------- > Check out my 502 powered '65 Malibu Super Sport Project > http://www.65ss.com > > >

