Underdrive...
Member
Joined: Nov 2010
Posts: 88
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I would have to agree with hiredman77. I have not added the underdrive pulleys to my truck but did in my 89 5.0 mustang. They added a good bit of power for the money. Mine was a three pulley system and helped more than it hurt. I will have to put out there that I don't have an a/c in the car though so I have no experience with the pulleys effect on that.
Senior Member
Joined: Dec 2009
Posts: 341
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From: louisiana
I completely recommend them. I put them on my 90 5.0 and I could feel a difference. Also I dont have any extra electricals other than offroad lights (theyre off most the time) and my ac doesnt work so ya. I havent noticed much of a bad effect. I say def worth it
Senior Member
Joined: Jul 2008
Posts: 58,557
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From: Long Beach Calimexifornia
Slighly less rev's + slightly more accessory load = Higher amps/ heat. 2 G's are known for melting their Alt. harness (& catching fire) as it is!
Geat performance..........till it caught fire!
Last edited by ymeski56; Nov 17, 2010 at 04:44 PM.
Senior Member
Joined: Nov 2009
Posts: 200
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From: Abington PA
Well that's a good bit of advice haha
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Joined: Jul 2008
Posts: 58,557
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From: Long Beach Calimexifornia
You should accurately figure your Max load w/ every light, bell & whistle blaring. Get an alternator 20-25% more output than that. If planning to get Floods or a wench in the future or a dual battery set up, plan ahead.
Thread Starter
Senior Member
Joined: Jun 2010
Posts: 605
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From: Camden, Alabama
Do not
Do you like your A/C down there in Alabama... well underdriving the A/C compressor sure will help NOT...
Undrive pulleys are for race cars not cars and trucks you plan to drive on the street... they just make the accessories work less... so your booming audio system will kill the battery real fast because the alternator just cant keep up.
Undrive pulleys are for race cars not cars and trucks you plan to drive on the street... they just make the accessories work less... so your booming audio system will kill the battery real fast because the alternator just cant keep up.
Thread Starter
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Joined: Jun 2010
Posts: 605
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From: Camden, Alabama
If/when I do this I would buy good high quality UDs. I already installed everything I ordered so far so it will be a little while before I order more. Will be something I look into though. Thank you for your opinions.