200 amp alternator is it worth putting in?

[petey62782]

i have a powermaster 200 amp alternator my qeustion is it worth putting in if it drains more horsepower when it engages or is the extra amperage worth it and why . any info would be helpful. i have plans to doing a trans cooler with a built in fan and electric twin fan for my main cooiling system. the engine is a LQ-9 ......thanx

[trx2stroke4life39]

It will not draw any more power than the stock alternator. It is just the way the coils are wound to get more power out of it.

[r.barn]

The main thing you pick up and need from bigger alternator is
not the max output

but the output at idle.........

160amp alt may put out 70amps at idle
while a 200amp puts out more like 100.

The 160 would more than cover your load, but only at 2,000 rpm+
at idle it may be at it limit and you get dimming headlines and such.