Alternator Pulley
Thread Starter
Heel & Toe
Joined: Oct 2004
Posts: 22
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Alternator Pulley
Has anyone put a Powermaster alternator on a 1970 454 with power steering? The pulley on my original equipment alternator has a 5/8 in. shoulder behind the V groove and aligns with the front crank pulley groove. The pulley on the Powermaster doesn't.
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
If your original water pump pulley has 2 grooves, and the crank pulley has 2 grooves, the aft groove is for a belt that runs from the crank to the water pump. The front groove runs from the water pump to the crank and then to the PS pump rear groove. The front groove on the PS pump runs the Alternator. The alt pulley has the 5/8 offset to align it with the PS pump. My 69 BB is setup that way too.
Any reason you can't change the pulley on the new alternator from the old one?
Any reason you can't change the pulley on the new alternator from the old one?
