Biggest alternator I can fit on 83 454 K30?

[Captainfab]

If V-belt slippage becomes a problem with higher amp alternators you can always run double belts as is used on medium and heavy duty trucks that also have higher amp alternators(ie:Topkick, Kodiak). You'd just have to locate a double pulley for the alternator and the crank. I believe some of the older GM 6.2 diesel pickups also had double alternator belts, correct me if I'm wrong.

 

[Babaganoosh]

Look for any of my threads on the topic, you'll find everything you need.

-- A

I have been, seen a lot of your info on this swap. Maybe I over read the years with the 140a alternator.

 

[RootBreaker]

In the original case style, there are 90-95A versions for Cadillacs. Search on my name for the part number. I posted it for Dafey somewhere.

EDIT, aw heck, I went and found it:

http://coloradok5.com/forums/showthread.php?t=230956

In the big case, 140A versions come from Pontiac Transport (V6 with rear AC), plus apparently cop cars. This will require re-wiring (easy, coupla plugs from the parts store), a pulley change, and at least on MY big block, required fabbing a new upper bracket. And the Transport ones, at least, aren't cheap.

You *can* get high-output ones in the smaller case, but they tend to be pricey and are not known for long-term reliability. If you have a local alternator-starter-motor shop, you might have your old one rewound by them.

I have one each of the above solutions on my trucks (big block has the 95A Caddy part, smallblock the 140A). I like it 'cuz they're off-the-shelf replacement units I can get anywhere, as opposed to custom-built parts.

-- A

did you replace your charge wire?
if so where does it go?
from alt into harness.. but where to?