Installing Slp 25% nderdrive pully what size belts are needed?
 

I am going to be installing my slp 25% underdive pulley soon and need to know what size belts to order. i would prefer goodyear gatorbacks.

???

Why dont you call the place you git it from? I would guess theyd know eh?:thumbs: I went with Powerbond through Texas Speed and they set me right up with both belt sizes.

Main Accessory Belt

Gatorback #4060775 = Metric #6KP1970

&

Air Conditioning

Gatorback #4040410 = Metric #4KP1040 For the Air Cond Belt if it's 25% underdrive too.

Gatorbacks available at Summit Racing.

im not sure, its a 25% slp harmonic balancer

From SLP: C5/C6 Corvette
Main Belt: Gates 6PK1900 or Equivalent
Accessory Belt: Gates 4PK1040 or Equivalent

You'll have to cross reference them if you don't want gates.

I just ordered a slp pulley, the part numbers I got are 060775 main belt 040405 a/c

see, i was told the good year gator back is 4040420 for for the a/c belt. thats why im now confused.

I have the SLP and the underdrive is 77.5in in length and i believe the AC is 41in

okay, so i've done a little more research and it turns out that the

Gatorback 4040420 is 42 inches and the Gatorback 4040405 is 40.50 inches.

if the required length is 41 inches, which is it better to go with?

The Gatorback #4040410 is 41" and fits perfectly.

does anyone know what the stock ac belt length is?

thanks for that info Last c5

The stock Gatorback # is 4060798 so I would assume it's 79.8 " long.

DAMNNNN!!!!!! thats the length for the stock ac belt? that sounds more like the serpentine belt. please correct me if im wrong.

Sorry! Not reading very well today. :ack: The stock AC belt number is a Gatorback #4040420 and it's 42" effective length and 42.75" outside length. You're right, you'd have to use a lot of muscle to get that one on all the accessory pulleys.

So the correct belt size for a 2000 A4 is 40.5" belt right?

you know its ridiculous that you buy a part from a company like SLP and they cant even tell you the correct belt size that is needed. i spoke to Slp today and they're telling me to go measure it.

I HAVE NO MECHANICAL SKILLS AND MY MECHANIC IS OVER AN HOUR AWAY AND CANNOT ORDER THE PARTS ON SATURDAY WHEN IM GETTING THE WORK DONE.

This is the last thing i'll buy from SLP.