Belt Type / Measurement
Thread Starter
Running Guns & Moonshine
Joined: Aug 2001
Posts: 12,762
Likes: 7,350
From: CT
Belt Type / Measurement
I remember running an rpm belt a few years ago with my procharger which gave me no slip.
New setup is an 8 rib with 3.6 on the AA secondary drive/IW ten percent od.
What's the current go-to for belts? And does anyone know the belt length needed for this combination?
New setup is an 8 rib with 3.6 on the AA secondary drive/IW ten percent od.
What's the current go-to for belts? And does anyone know the belt length needed for this combination?
Burning Brakes
Joined: May 2009
Posts: 1,181
Likes: 225
From: Austin Texas
A&A direct drive IW 10% overdrive crank
K080545HD / 8PK1384 (new belt w/ the updated 8 rib tensioner pulley)
K040430 / 4PK1096
K060365 / 6PK929
K040292 / 4PK741
However...I had to call A&A and go one size smaller on the SC bracket tensioner pulley, in order to clear the edge of the water pump thermostat housing. Under HARD abrupt throttle changes (like on / off gas real fast) the belt whip would cause the tensioner to slightly touch the WP housing. Unless its stationary on a dyno and you're watching for it, you most likely will not notice the issue. I'm not sure if A&A has not updated their direct drive kits or maybe I just received a pulley that was too big in my initial kit. Either way, I spent a FORTUNE paying a shop by the hour to work through all the little details. This was another lesson learned.
*For a point of reference, the bigger pulley I had in the kit was steel and the smaller one that was sent to me is now aluminum. I think this did slightly change the belt size.
Last edited by C6-LS2-MN6; May 8, 2022 at 06:02 PM.
