Grmvettes

Have a 427-400 hp ac car. Need crank pulley. Is it a 2 or 3 groove and reading has me thinking it’s cast iron. Anyone have pics or a part number and know where I can find one?

leigh1322

I did that research for mine. Paragon Corvette says 69s used both steel and cast 2-belt crank pulleys depending on the engine and the VIN #. The water pump pulley is a 3 belt on all BBs. I presently have all three if you need pics or numbers.

leigh1322

I'd be willing to let the 72 OEM steel crank pulley go if anyone wants it.

TOM B1

I would like a pic also or a part #, I have a 3 groove here with a damper for a bb but dont remember for what

leigh1322

As far as I know BB C3s never had a 3 groove crank pulley. Only the steel or cast 2 groove ones above.

The water pump ones did vary by year, some 2 groove and some 3 groove.

leigh1322

From 1983 Chevy Parts Book. Only 1923 or 108 mentioned for 67-72 BB cars. But does not seem to cover all BBs. For example the 74 454 w/ AC uses a diff part # pully. The 69 427 H/P listing says exc 3x2. Nothing listed for 3x2? Is it possible a number got dropped? Does anyone have an older parts book?

3X2

My July 69 built L71 has the stamped steel pulley.