Big ass alternator that looks stock? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

davepl · 05-21-2018, 10:08 AM

I have found that if my electric fans and electric fuel pump run at the same time, esp. with headlight, the alternator cannot keep up, it reads discharge. Even if you rev it up it cannot get all the way to even and will read at most 13V.

It didn't originally HAVE electric fans and pump, so I had added the internally regulated alternator off of a '84 Camaro, I think, a very common retrofit.

But I think that's maybe 80A and it appears I need more like 120, and I need it at idle.

Anyone know of high output 3-wire alternator that can be run with a V-belt and looks anything like a stock unit? That outputs good power at idle?

05-21-2018, 10:08 AM	#1
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Big ass alternator that looks stock? I have found that if my electric fans and electric fuel pump run at the same time, esp. with headlight, the alternator cannot keep up, it reads discharge. Even if you rev it up it cannot get all the way to even and will read at most 13V. It didn't originally HAVE electric fans and pump, so I had added the internally regulated alternator off of a '84 Camaro, I think, a very common retrofit. But I think that's maybe 80A and it appears I need more like 120, and I need it at idle. Anyone know of high output 3-wire alternator that can be run with a V-belt and looks anything like a stock unit? That outputs good power at idle? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible



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