Will Pulleys really increase your 1/4?

[87'GTstang]

thought we were talking charging Im sure most pullies are different,but mine(march) dont have any over heating problems at idle,only when I do 2500rpm,or better on the highway.

If you overheat on the highway then you may want to put the stock or even an overdrive pulley on the waterpump, otherwise you have a radiator issue.

 

[willys1]

If you overheat on the highway then you may want to put the stock or even an overdrive pulley on the waterpump, otherwise you have a radiator issue.

I know,,Im putting the originals back on.I think when I get a cam and heads it will make up for the lost 10HP

 

[Joe 5.0]

I have a 94 GT with UD pulleys (not sure which brand), and my headlights dim at idle, especially when I have my subs on. I've never had any problems with it tho, cuz as soon as I get above 1k rpm the voltage jumps right back up.

I recently have been running a bit warmer than before, but I think thats due to never having flushed the coolant.