Forced Induction Superchargers | Turbochargers | Intercoolers

Under drive pulley with forced induction

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Old Jul 15, 2021 | 06:30 PM
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Default Under drive pulley with forced induction

I worried about running under drive crank pulley with all the electronics. I worry about it charging at idle in lanes. Two electric fans, electric water pump, 2 electric fuel pump, holley terminator x and all the rest. It sees over 7k often.
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Old Jul 15, 2021 | 07:27 PM
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So over drive the alternator with a different pulley?

Are you seeing voltage drop at a hot idle?
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Old Jul 15, 2021 | 09:15 PM
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I had a 25% underdrive on my LS2 for a decade and never had any issues with not charging, not powering electronics, not cooling properly nor not running the AC well. I never had a lick of trouble with anything due to the 25% underdrive.
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Old Jul 16, 2021 | 11:25 AM
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Same here, I ran a 25% underdrive pulley, I also installed a high amp truck alternator and never had a problem, shifted at 6,800 rpm.
Dual Derale cooling fans, oil cooler fan, twin fuel pumps, high powered stereo, etc.
I also had upgrade the size of the cable from the alternator to battery for GP.
After the truck alt my voltage was steady, car seemed to run better too oddly enough.
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