underdrive pulleys
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Joined: Apr 2005
Posts: 490
Likes: 1
From: Hamilton ON Canada
Car: 87 GTA t-top
Engine: L98 350 w/RMT
Transmission: 700R4
Axle/Gears: 9 bolt BW 3.45
underdrive pulleys
I got my underdrive pulleys on but my voltage goes low almost to a stall at the light, what can I do to improve the voltage at idle with this setup?
I have the stock alt and new batt.
I have the stock alt and new batt.
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Joined: Jan 2003
Posts: 1,323
Likes: 0
From: Arthur, Ontario, Canada
Car: 92Z28, 99SS, 83Z28 & 86GTA
Engine: 421, LS1, 327Turbo & 383
Transmission: T-56, 4L60E, T5 & 4L60
Axle/Gears: 4:10, 3:42, 2:73 & 3:27
Re: underdrive pulleys
They make a power and amp series, I had the other one and was having voltage problems too, switched to the power and amp set-up and it charges fine now
Summit # for power and amp set I now have, MCH-4410
Summit # for the set used to have, MCH-4010
Summit # for power and amp set I now have, MCH-4410
Summit # for the set used to have, MCH-4010
Supreme Member
Joined: Jul 2005
Posts: 1,423
Likes: 1
From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
Re: underdrive pulleys
i have the same problem at i, i have a 100 amp alternator. i am not idling very long when i start to move it charges fine.
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
Re: underdrive pulleys
You could always just go back to the original pulleys. I used to have the March underdrive set up but went back to the originals. Can't say I really noticed any difference.
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