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What aftermarket aluminum pulleys are you guys using for SBC with a long water pump. Standard rotation.....


Carl
 

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I used the Summit aluminium pulleys on both my small and big blocks. Perfect fit and belt alignment, haven’t tossed a belt yet. I can dig up the numbers if you’re interested. My initial install in my Nova was single groove water pump and crank on the small block. When I moved the motor to my Beaumont the crank was changed to a two groove. Have a big block in the Nova now with a single groove on the water pump and a double on the crank. The swaps leave me with a single groove crank pulley sitting on the shelf.
 

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Summit Aluminium Natural Finish Pulleys for SBC

SUM-G3963 Pulley-Single Upper LWP
SUM-G3965 Pulley-Single Lower LWP
SUM-G3966 Pulley-Double Lower LWP

I thought my big block pulleys were Summit as well but I ended up going to a polished set of Billet Specialties. The Summit brand doesn’t offer aluminium pulleys for BBC.
 
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