underdrive pulleys

82 GT · 03-19-2001, 07:39 PM

Do the underdrive pulleys make a noticable difference after they are installed?
I mean..would I FEEL a difference in acceleration?

Killercanary · 03-19-2001, 08:30 PM

Pulleys are in my book THE best mod for the money you can do. You will feel it, in my case the tires lit up much easier. I went from a 14.96 at 91mph to 14.6 at 94.89mph- that one heck of a boost for under $100. I have the ASP aluminum pulleys and highly recommend them. Before the pulleys it was like someone tied an anchor to my car when the rpm's got above 5 grand, but that was not the case with the pulleys, I didn't notice that lack of pull that was so obvious before the pulley install.

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95 GT convt' 5 speed, 3.73's,FMS HD clutch, Pro 5.0 shifter, ASP alum. underdrive pulleys, Bassani offroad X pipe, 2 chmbr flowmasters, K&N w/o silencer, edelbrock performer intake, FRPP 65mm T-body, FRPP shorty headers, FRPP aluminum driveshaft.Hooker 4pt chrome car bar, Xenon/Wings West ground effects, custom interior
Best ET: 13.83
Best MPH: 98.55mph with Best 60': 1.91 on Nitto DR's
Homepage: <A HREF="http://www.angelfire.com/pa2/killercanary" TARGET=_blank>http://www.angelfire

dinomite · 03-20-2001, 07:56 AM

How hard are those to install? I have heard of people having charging problems, is that only with the stock alternator? Does anyone have underdrives with a 130 amp? Any problems there?

Rick 91GT · 03-20-2001, 08:07 AM

The underdrives are one of the best seat of the pant's mods you can do. They are easy to install, but to get the pulley off the Alt. it is best to use a impact gun, I have heard some garages will take them off for you for free, you also need to put the new pulley on woith one takes 30 sec's with a impact. As for charging, I have wen't through 2 65amp alt, and I did have low charging but it has seemed to be better with this last alternator and ignition switch. A lot of people leave the underdrive alt pulley off and keep the stock pulley if they have charging problems, I don't think you would have any prob's if you have a 130amp.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

03-19-2001, 07:39 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	underdrive pulleys Do the underdrive pulleys make a noticable difference after they are installed? I mean..would I FEEL a difference in acceleration?

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03-19-2001, 08:30 PM	#2
Killercanary Registered Member Join Date: Nov 1999 Location: Altoona, PA Posts: 336	Pulleys are in my book THE best mod for the money you can do. You will feel it, in my case the tires lit up much easier. I went from a 14.96 at 91mph to 14.6 at 94.89mph- that one heck of a boost for under $100. I have the ASP aluminum pulleys and highly recommend them. Before the pulleys it was like someone tied an anchor to my car when the rpm's got above 5 grand, but that was not the case with the pulleys, I didn't notice that lack of pull that was so obvious before the pulley install. ------------------ 95 GT convt' 5 speed, 3.73's,FMS HD clutch, Pro 5.0 shifter, ASP alum. underdrive pulleys, Bassani offroad X pipe, 2 chmbr flowmasters, K&N w/o silencer, edelbrock performer intake, FRPP 65mm T-body, FRPP shorty headers, FRPP aluminum driveshaft.Hooker 4pt chrome car bar, Xenon/Wings West ground effects, custom interior Best ET: 13.83 Best MPH: 98.55mph with Best 60': 1.91 on Nitto DR's Homepage: <A HREF="http://www.angelfire.com/pa2/killercanary" TARGET=_blank>http://www.angelfire

03-20-2001, 07:56 AM	#3
dinomite The Dude Join Date: Feb 2001 Location: Arlington, VA Posts: 1,262	How hard are those to install? I have heard of people having charging problems, is that only with the stock alternator? Does anyone have underdrives with a 130 amp? Any problems there?

03-20-2001, 08:07 AM	#4
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	The underdrives are one of the best seat of the pant's mods you can do. They are easy to install, but to get the pulley off the Alt. it is best to use a impact gun, I have heard some garages will take them off for you for free, you also need to put the new pulley on woith one takes 30 sec's with a impact. As for charging, I have wen't through 2 65amp alt, and I did have low charging but it has seemed to be better with this last alternator and ignition switch. A lot of people leave the underdrive alt pulley off and keep the stock pulley if they have charging problems, I don't think you would have any prob's if you have a 130amp. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!