BBC Crankshaft pully question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Primered_69 · 01-21-2005, 07:53 PM

I found one today that was two piece but the front pully was broken. Is it the same as on a sbc? Or where can I get just the outer one.

(If this is a dumb question it is because I have no experience with BBC parts.)

JimKshortstep4x4 · 01-21-2005, 08:37 PM

The pulleys are not the same. Do you have a short water pump setup or long? Also, is your pully that you need cast or stamped?

Chevelle/Camaro BBC pullys should work for you. Ground Up Restorations is one source. BBC pulley PN ACP-844 (short water pump).

Here is a link.

Jim

http://www.ss396.com/

Primered_69 · 01-21-2005, 08:45 PM

I am not sure it came of a 71-72 suburban. I do not know how to tell the difference between cast and stamped. I would say it was whichever one is the weaker of the two. The pully cracked and broke at the bolt attachement point I guess due to overtightening.

Bob Moore · 01-21-2005, 09:21 PM

Cast is like an engine block - stamped is like a water pump pulley

Primered_69 · 01-21-2005, 09:52 PM

Then it is stamped. The lower pully is called the crankshaft pully right?

JimKshortstep4x4 · 01-22-2005, 07:55 AM

It is called the crank pulley. Ground Up also has the second outer pulley in a stamped version if your inner pulley is still good.

Jim

Tx Firefighter · 01-22-2005, 08:08 AM

If it's just cracked, it can easily be welded.

Those pulleys are pretty hard to find nowdays. It would be worth the effort to repair it.

01-21-2005, 07:53 PM	#1
Primered_69 Registered User Join Date: Sep 2002 Location: Fort Worth Posts: 1,409	BBC Crankshaft pully question I found one today that was two piece but the front pully was broken. Is it the same as on a sbc? Or where can I get just the outer one. (If this is a dumb question it is because I have no experience with BBC parts.) __________________ 1969 Chevy LWB - with shaved handles; 3 1/2 front/ 5 1/2 rear drop; (waiting to be put back together)

01-21-2005, 08:45 PM	#3
Primered_69 Registered User Join Date: Sep 2002 Location: Fort Worth Posts: 1,409	I am not sure it came of a 71-72 suburban. I do not know how to tell the difference between cast and stamped. I would say it was whichever one is the weaker of the two. The pully cracked and broke at the bolt attachement point I guess due to overtightening. __________________ 1969 Chevy LWB - with shaved handles; 3 1/2 front/ 5 1/2 rear drop; (waiting to be put back together)

01-21-2005, 09:21 PM	#4
Bob Moore Registered User Join Date: Feb 2004 Location: Tacoma WA Posts: 1,365	Cast is like an engine block - stamped is like a water pump pulley __________________ 67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow

01-21-2005, 09:52 PM	#5
Primered_69 Registered User Join Date: Sep 2002 Location: Fort Worth Posts: 1,409	Then it is stamped. The lower pully is called the crankshaft pully right? __________________ 1969 Chevy LWB - with shaved handles; 3 1/2 front/ 5 1/2 rear drop; (waiting to be put back together)

01-22-2005, 08:08 AM	#7
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	If it's just cracked, it can easily be welded. Those pulleys are pretty hard to find nowdays. It would be worth the effort to repair it. __________________ I'm on the Instagram- @Gearhead_Kevin

01-21-2005, 08:37 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The pulleys are not the same. Do you have a short water pump setup or long? Also, is your pully that you need cast or stamped? Chevelle/Camaro BBC pullys should work for you. Ground Up Restorations is one source. BBC pulley PN ACP-844 (short water pump). Here is a link. Jim http://www.ss396.com/

01-22-2005, 07:55 AM	#6
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	It is called the crank pulley. Ground Up also has the second outer pulley in a stamped version if your inner pulley is still good. Jim



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