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Alternator

1978Blazerk5

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wisconsin
Well My little 63 Amp alternator aint doing its job and that with all stock stuff. So I am gonna ask for everyones expertise. I am Most likley gonna be running dual batterys, Fog and aftermarket reverse lights, And not a 100% sure but maybe a winch. So what would you recomend for alternator size.
Biggest i can find at autozone is a 100amp.


Thanks
 
Well My little 63 Amp alternator aint doing its job and that with all stock stuff. So I am gonna ask for everyones expertise. I am Most likley gonna be running dual batterys, Fog and aftermarket reverse lights, And not a 100% sure but maybe a winch. So what would you recomend for alternator size.
Biggest i can find at autozone is a 100amp.


Thanks

On a smallblock, the Pontiac Transport alternator is a bolt-in, with a little rewiring (which can be done non-permanently) and is 160A or better (mine was clocked at 170, IIRC, by the rebuilder.) Search for my threads on this if you want details.

For dual batteries and lighting, 100A could do nicely.

-- A
 
I have 2 trucks I run 2 batteries in and I have 90 amp alternators that came in 87 caprices in both of them and I run extra lights on both and an electric snow plow on one and the Caprice 90 amp alternators have held up great for a several years in both trucks.
 
dremu, Random Question for ya. I just went through your build theard i noticed you have a high-lift and stock bumpers, how do they hold up to the high lift?
 
I bought a 140A alternator from Summit Racing. Works great and had a desent pricetag too. It's a one wire design so it´s really easy to connect.
 
dremu, Random Question for ya. I just went through your build theard i noticed you have a high-lift and stock bumpers, how do they hold up to the high lift?

Thus far I've only used the hi-lift on the CUCV shackles. Flip them up and they make an ideal loop point.

The stock bumpers are being yanked in the next few weeks and I'm breaking out the welder and some square tube ;)

-- A
 
went with an old buick/ caddy/olds big body alt. In stock form it's 100 amps [but you can build it for more] 3 reasons why; bigger parts means it does'nt work so hard to make power all day, and if by some chance it does fail,most auto parts stores will carry it , and [you'll like this one cheapass] it costs a fraction of what any of those high-powered one will run. Oh, and chevy makes a bracket for a small block applications.
 
Im running a Mean Green 140 amp alt. If I had to go back and do again, id jus opt for a factory souped up one that came in caddys, etc. a vehicle with alot of power accessories, hence the bigger alt in those cars.
 

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