Hey guys I'm in the process of supercharging my 4.0 SOHC Ranger check out my theread here! https://www.ranger-forums.com/showth...98#post1822098

I pulled HP: 197 Torque: 218 With just Headers, Exhaust an Intake, Tune and E-fan! I'm sure it would get better numbers with the UD pulleys. But the S/C comes first. Pretty impressive numbers I'd say for mild bolt ons considering most stock 4.0's make about 160hp

 

Not bad is that dyno with the 33's? It would probably be more with stock tires on it.

 

That's with about 32 inch winter tires and my 4.10 gearing which kills dynojet numbers

 

those are pretty impressive numbers for just bolt ons. you have similar mods that i do, id be interested to see what mine will do on a dyno.

 

Almost identical minus the 4.56 gears those would hurt you on a dynojet

 

I'm quite surprised actually, definitely nice numbers for bolt on parts.

Out of curiosity, wouldn't UD pulleys be counterproductive if you have a supercharger?

 

Good solid numbers Adam!!

I'm not sure if they make them for 4L Fords but with a supercharger, look at an Overdrive Crank Pulley.

 

You won't want to do the underdrives with a blower. You'll slow down the blower and lower the boost.

 

Won't underdrive pulley's reduce the boost of the supercharger?

 

A Underdrive crank pulley will reduce boost by 2 to 3lbs of boost (on Mustangs) and it will have the same effect on every vehicle. Many Lightning/ Cobra/ Shelby and S/C GT guys including myself run a 10% overdrive crank pulley with the remaining pulleys being stock.

 

That's why I got rid of my underdrive and went back to stock. Unfortunately, there are no overdrives for us unless you overdrive the blower itself.