Anyone tried underdrive pulleys on a Ram (5.2). What are the pros and cons.

http://store.summitracing.com/defaul...3&autoview=sku

Thanks.

 

Someone please reply Id love to know if its worth the cash.....

 

I hope someone with Ram experence replies I would like to hear their opinion. I installed underdrive pully on my 95 Firebird LT1. It made no noticeable difference in performance or mpg`s. In fact, when I came to a stop light with a large electrical drain, i.e. lights, radio, a/c all on I had to take the car out of gear and kick up idle speed to get enough juice out of alt. And yes, I did replace pulley on alt. but it was not enough. Good Luck

 

Guess no one has tried them.

 

they have been tried, there are pros and cons to them, this company asp racing is preferred...

I looked into having them on my truck and decided against it becuase of the alt drain (towing and added electrical for the trailer). I chatted with some users and they all said the power gain was not noticeable. That doesnt mean it's not there, the butt dyno is not sensitive enough to pick up the 10 or so hp you get from them.

It is a mod however that will be going on the M3...

 

I have a 99 Dodge Ram 5.2. I installed a underdrive crank pulley as my very first mod ( I install my mods one at a time just to see the pros and cons). I instantly noticed a gain in horsepower and torque. I purchased my pulley thru ASP, they do not sell the belt but will give you the part # for the one you need. This was a 5min install, easy.

As far as the alternator I have no underdrive pulley, I have low output at idle but at appx 900 rpm the alt is at full charging capacity. The guy with the alt problem either (1) had a alt that was going bad or a bad connection (2) had an aftermarket alt that was rated lower than prescribed.