3.7 underdrive pulley installed - Jeep Garage - Jeep Forum

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  #1  
Old 09-11-2012, 09:10 PM
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3.7 underdrive pulley installed

So I finally got around to installing my ASP underdrive for the 3.7. Took a while to figure out how to get it installed without paying the dealership $250.

I have to say,no other mod has improved acceleration as noticable as this,particularly in the lower rpm ranges of idle to 4000 rpm!! I'm not saying it's like a hemi now, lol, but it is noticably better. I'm also running a flyin Ryan ported throttle body, K&N CAI and custom tune. She finally gets off the line smartly,where before it always felt like i was dragging the brakes for the first 40 feet.

No problems with charging or overheating,although the weather hasn't been very warm the last few days to test.

Bang for the buck,this is THE mod for a 3.7

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Old 09-11-2012, 09:40 PM
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Re: 3.7 underdrive pulley installed

Quote:
Originally Posted by 05wkguy View Post
So I finally got around to installing my ASP underdrive for the 3.7. Took a while to figure out how to get it installed without paying the dealership $250.

I have to say,no other mod has improved acceleration as noticable as this,particularly in the lower rpm ranges of idle to 4000 rpm!! I'm not saying it's like a hemi now, lol, but it is noticably better. I'm also running a flyin Ryan ported throttle body, K&N CAI and custom tune. She finally gets off the line smartly,where before it always felt like i was dragging the brakes for the first 40 feet.

No problems with charging or overheating,although the weather hasn't been very warm the last few days to test.

Bang for the buck,this is THE mod for a 3.7
05 I'm pretty new to wk's what is a ASP underdrive?
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Old 09-11-2012, 09:48 PM
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Re: 3.7 underdrive pulley installed

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Originally Posted by stashgto View Post
05 I'm pretty new to wk's what is a ASP underdrive?
ASP= the brand
a underdrive pulley is smaller,so it takes less energy to turn the accessories,(alt,a/c compressor,steering pump) thus letting it accellerate faster
I have one on my hemi & i like it alot also
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Old 09-11-2012, 10:03 PM
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Re: 3.7 underdrive pulley installed

OK a regular underdrive pulley I had no Idea they had them for this truck thanks! That's good to know you felt a difference.
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Old 09-11-2012, 10:32 PM
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Re: 3.7 underdrive pulley installed

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Old 10-09-2012, 07:02 PM
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Re: 3.7 underdrive pulley installed

Quote:
Originally Posted by 05wkguy View Post
So I finally got around to installing my ASP underdrive for the 3.7. Took a while to figure out how to get it installed without paying the dealership $250.

I have to say,no other mod has improved acceleration as noticable as this,particularly in the lower rpm ranges of idle to 4000 rpm!! I'm not saying it's like a hemi now, lol, but it is noticably better. I'm also running a flyin Ryan ported throttle body, K&N CAI and custom tune. She finally gets off the line smartly,where before it always felt like i was dragging the brakes for the first 40 feet.

No problems with charging or overheating,although the weather hasn't been very warm the last few days to test.

Bang for the buck,this is THE mod for a 3.7
Could you post up a link? Thanks mang.
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Old 10-09-2012, 07:08 PM
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Re: 3.7 underdrive pulley installed

i too am intrested in this UD kit
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Old 10-09-2012, 09:54 PM
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Re: 3.7 underdrive pulley installed

ASP Racing - Mopar/Dodge Performance Pulleys

It lists it for 4.7/3.7. Be aware that you'll also need a shorter belt. I bought one about 2.5 inches shorter and that worked perfect.
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Old 10-10-2012, 12:19 AM
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Re: 3.7 underdrive pulley installed

Email me when you get a chance.
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Old 10-10-2012, 03:29 AM
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Re: 3.7 underdrive pulley installed

Thank you.
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Old 10-10-2012, 07:38 AM
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Re: 3.7 underdrive pulley installed

thank you man!
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Old 10-10-2012, 08:51 AM
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Re: 3.7 underdrive pulley installed

agreed, i'll be saving for this in the following days.
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