Sinistersilverado

Ok so I bought a asp pulley from a buddy that is new. I want to put it on my 05 v. Anyone happen to know the belt lengths im going to need to install this?

BudRacing

iTrader: (3)

Do you know how much smaller in diameter the pulley itself is? From that you could make a good estimate.

itsslow98

iTrader: (18)

My suggestion is go to the store, by a multiple belts smaller and try one. Then take the rest back. Beats the hell out of running back multiple times.

06blackonblackctsv

iTrader: (1)

What is the advantage of getting an underdrive pulley?

LSCustoms

iTrader: (20)

[youtube]8yE-ntzi8gc&feature=related[/youtube]

[youtube]fZGgK9dsb1s[/youtube]

these videos give a basic explanation, but it for sure frees up hp to the wheels, so the motor isnt really making any more horsepower (i dont think), but the underdrive allows more of it to the wheels, so you see a rwhp increase...

06blackonblackctsv

iTrader: (1)

ok thanks, I appreciate that.

Derek98z

iTrader: (55)

Take a lose tape measure. It is the kind a seemstress uses (my wife happens to have one). Wrap it around the pulleys as if it is a serp belt. You can either load the tensioner to get the accurate length or not load it and subtract 3"

vmapper

iTrader: (8)

You will reduce the load (reduce the spinning) of / alternator / power steering and water pump. It frees up 'x' amount of horsepower doing so. notice the x is a single digit representation

Assuming we are talking about a crank under-drive pulley.

Some will get an overdrive pulley for the alternator to remove the electrical system stress of a slower turning alt. along with the under-drive pulley. You could have a 25% under-drive
You can then get a 32% overdrive alt pulley that would yield 7% gain in alt. speed.

I prefer Dampers over underdriving. but they are more $$.