Recommended amperage for an alternator

[FireSale]

Make a list of the amp rating of everything your electrical system might be driving and total that up to find a starting range.

The problem with alternators on dedicated drag cars is that they don't usually put out a full charge at idle rpm and that's where your engine tends to spend most of it's time at the track.

If you pick a one wire alternator be sure to set it up correctly with the jumper to the right terminal. Use the remaining wire for a warning light of some sort. It comes in handy when you lose your adjuster hardware and drive belt at the track like I did Sunday. The light popped on so I took a look and everything was just gone.

The short version: 85 amps for the strip. 120-140 if it's a street car with lots of electrical stuff.

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