nemethjames1

i gotta 03, with stock pully, and i want to get a bigger pully, can someone give me some good links... thanks

horatio102

try a different forum. This is the 5.0 area.

But wait, you want a bigger pulley? For less boost? Interesting.

Lots of people it seems go the other way, putting a smaller pulley on so they make more power. Find a SVT Lightning forum and see if somebody is upgrading their truck - I've heard the oem Lightning pulley is a great swap for the Cobra.

94BlackGT

Why would you want a smaller pulley??? [sm=rolleyes.gif]

mdvaldosta

smaller pulley for more boost, larger pulley for less boost

horatio102

If you increase the diameter of the accessory (in this case the supercharger), it will spin slower in relation to the engine. Look at a bicycle - the front sprocket represents the crankshaft, the rear represents accessories. When you use the biggest front sproket (crank) and smallest rear sprocket (accessory) you go fast (make more boost, more electricity, increased power steering assist, etc.).

That's why when people with stereo systems put an underdrive pulley on their crank (smaller), they usually put smaller ones on their accessories as well, to keep the alternator spinning at OEM speeds to prevent dimming lights.

Snake

Wow, I always wondered if there was a way to have both a nice stereo system and underdrive pulleys at the same time. I never even thought about also decreasing the size of the other pulleys. Makes a ton of sense now that you've brought it up. What size pulleys do people normally use for the accessories if they use underdrive pulleys to keep it close to OEM?

nemethjames1

what i ment was i want a bigger boost, so i wanted a smaller pully.. sorry about that guys... its a 10psi boost right now, and i want a 20lb boost or so, if thats not to much

EmptyEvergreen

yeah thats a big jump your goin gfor a pulley will never increase it that must unless the stock one is the size os a car tire