Underdrive pullies for an automatic GT
05-21-2007, 03:34 PM
#11
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Join Date: Jun 2006
Location: Sterling Heights, MI
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RE: Underdrive pullies for an automatic GT
ORIGINAL: RED121572
Ive got them under the hood of my car. I cant give you very accurate feed back on just a pullie mod, cause I had them installed along with a water pump and 3.73's.
Ive got them under the hood of my car. I cant give you very accurate feed back on just a pullie mod, cause I had them installed along with a water pump and 3.73's.
05-21-2007, 10:24 PM
#12
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Join Date: Apr 2007
Location: Metro Washington DC
Posts: 181
RE: Underdrive pullies for an automatic GT
When I had them on the Vic I didnt install the alternator pully becuase I had a lot of ham radio equipment...never had any problem with voltage/current
05-21-2007, 11:23 PM
#13
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Join Date: Dec 2004
Location: Small walk way by big walk way
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RE: Underdrive pullies for an automatic GT
ORIGINAL: ohsixgt1217
have nothing to do with whether or not you have an auto or a manual, same effect. Not worth it imo, but you will have mixed feelings from all. But to answer your question, there is NO difference.
have nothing to do with whether or not you have an auto or a manual, same effect. Not worth it imo, but you will have mixed feelings from all. But to answer your question, there is NO difference.
05-21-2007, 11:26 PM
#14
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Join Date: Jan 2007
Location: Ft.Myers, Florida
Posts: 1,064
RE: Underdrive pullies for an automatic GT
I have them listed in my signature because i have them on my car, lol.... It "IS" a mod. But after a before and after dyno pull, seeing a 1-2 hp increase, i realized it was a worthless mod.
ORIGINAL: Daniel60
Then why do you list in your signature? My opinion it is worth it andis abest buy for the money on increasing the horsepower.
ORIGINAL: ohsixgt1217
have nothing to do with whether or not you have an auto or a manual, same effect. Not worth it imo, but you will have mixed feelings from all. But to answer your question, there is NO difference.
have nothing to do with whether or not you have an auto or a manual, same effect. Not worth it imo, but you will have mixed feelings from all. But to answer your question, there is NO difference.
05-21-2007, 11:49 PM
#16
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Join Date: Jan 2007
Location: Ft.Myers, Florida
Posts: 1,064
RE: Underdrive pullies for an automatic GT
same dyno same day.At the time it was 279 max hp before, 281 max hp after. Done on a land & see dyno.I was dissapointed to say the least.
ORIGINAL: drbobvs
Unless it was same dyno, same day, I wouldn't take 1-2hp result too seriously. Mine was done same dyno without unstrapping the car = 9hp.
Unless it was same dyno, same day, I wouldn't take 1-2hp result too seriously. Mine was done same dyno without unstrapping the car = 9hp.
05-22-2007, 09:09 AM
#19
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Join Date: Feb 2007
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Posts: 1,136
RE: Underdrive pullies for an automatic GT
Make it 2. Every car responds different, 1-2 rwhp is pretty low, but I would not expect more than 4-5 rwhp. Some guys got higher, remember a Dyno Tech can make your dyno read what he wants you to see. Not to say the guys who got 9-12 hp with them didn't but on average you will see nothing more than 4-5 rwhp.
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