LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

BBk Underdrive Pulley

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Old Dec 1, 2013 | 10:34 PM
  #1  
Dustinx22's Avatar
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From: Grafton Wisconsin
BBk Underdrive Pulley

Hi I was wondering your guys opinion on the BBK underdrive pulley for the LT1 and LT4. I bought one for cheep and seeing if it does anything.
Old Dec 1, 2013 | 10:44 PM
  #2  
Injuneer's Avatar
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From: Hell was full so they sent me to NJ
Re: BBk Underdrive Pulley

Here's a dyno test of an equivalent product:

Drivetrain Modifications #2

Gained 0.7 peak HP.

If you have any sort of high electrical demand, like a heavy duty audio system, you may find the voltage dropping into the red at idle.
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