Mechanics

ALTERNATOR

1977 Pontiac Lemans

Electrical problem
1977 Pontiac Lemans V8 Two Wheel Drive Automatic 67000 miles

Can I replace my 63amp alternator with a 100amp? I have a after market stero system installed but it does' nt draw very much. Can this change hurt anything?
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77canam
May 20, 2010.



If your 100 amp alternator will fit the original brackets OK, and the belt lines up, there shouldn't be any problem. It only has extra capacity when needed. I would probably make the change myself. There's nothing wrong with a little extra juice on hand.

Tiny
Jim Shirron
Jun 20, 2010.