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Avanti Pulley!

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Although factory hi-output Avanti R3 crankshaft pulleys are a different diameter than standard R1-R2 pulleys, they are made out of the same material.....True?

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I will say False, since the Sales Letter covering them does not mention a different material.  Of course, this may be a big assumption since the Sales Letter may not go into material.  

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I'll say false too. When they changed the water pump pulley for the AC kicker kit, they made the new pulley in aluminum. I would guess all the low production non stock items were also the same.

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Studegary & Brad are both correct here:)....Brad is also correct in mentioning the factory H.O. Avanti crank pulley was made of aluminum.

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