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Old 01-21-2015, 10:00 PM   #19
rich weyand
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Join Date: Apr 2014
Location: Bloomington Indiana
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Re: At what RPM does your 350 SBC idle?

Quote:
Originally Posted by Axle View Post
A 12si is an easier conversion than a cs133. Never realized they where that much better at idle than a 10si.

Alex.
It's not a conversion at all, really, just a drop in. The reason they are so much better at idle is that you can get them at much higher amperages due to the better cooling. If at idle the alternator is running at only 30% capacity, 30% of 94 amps is a lot more than 30% of 43 amps!
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1978 K10 RCSB DD.
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