Alternator upgrade

mustangracer

Founding Member
Jun 15, 1999
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Southern California
Anyone know of a v-groove pulley to work with a late model alternator? I've got a 110 Amp off a 90 SuperCoupe and need a proper pulley to work with the stock v setup. Powermaster provides a v belt pulley with their kit, but doesn't have it available separately.
 
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Don't cringe:

I use a 100 amp GM, 1-wire alternator on my 64.5 with a March pully set-up.

- GM is cheaper
- GM cheaper to repair
- it's only a spacer difference
- Gets rid of that darned external regulator
- simplifies the harness considerably.

Not a purest...just like giddy-up-and go!

Q
 
blandq said:
Don't cringe:

I use a 100 amp GM, 1-wire alternator on my 64.5 with a March pully set-up.

- GM is cheaper
- GM cheaper to repair
- it's only a spacer difference
- Gets rid of that darned external regulator
- simplifies the harness considerably.

Not a purest...just like giddy-up-and go!

Q
That's what I use. Haven't had a problem. I think it was a unit from an 85 camaro.
 
TOM B said:
Why dont you just buy the powermaster alt. Then you dont have to fuss with the mounting and wiring.

Hmmm....$150+ for a powermaster alt, vs...20 bucks and a little, and I do mean tiny, bit of connection work....two wires in fact...you do the math. The later alt mounts exactly the same as the original. :D

The pulleys do interchange, or at least fit on the shaft. The v groove pulley meets the alt housing before it seats correctly, and the center is thicker than the late model pulley, preventing the nut & washer from being installed.

And just for Tom B...if it's going to require expensive machine work to make it fit, then the powermaster alt does make more sense. But like some other people here...I'm a cheapskate..if it can be done on the cheap but good scale, I'm all for it.

The later alt is an internal regulator, so I can ditch the external reg also.
 
blandq said:
Don't cringe:

I use a 100 amp GM, 1-wire alternator on my 64.5 with a March pully set-up.

- GM is cheaper
- GM cheaper to repair
- it's only a spacer difference
- Gets rid of that darned external regulator
- simplifies the harness considerably.

Not a purest...just like giddy-up-and go!

Q

Got a wiring diagram for that???