Quote Originally Posted by poindexter View Post
Just in case you guys don't know, I'll be running the Marks 4WD Hydroboost setup hence no vac pump.
Still interested about the 8 rib thing, as when at GM Powertrain I designed FEADs ( Front End Accessory Drives) and had no durability issues with 6 ribs, but then maybe something has changed.

Santa tracker has him on time guys......

Merry Christmas to you all.
BD run a vac boosted clutch assy which makes the pedal feather light = are you doing something else instead? I have the hydro boost on the list also, great bit of established hardware.

There are a couple of guys running the 6 rib on the Harrop s/c and finding excessive belt stretch. Harrop know about it as they have a higher performance kit for the LS motors avail in 8 rib. I had not heard about it until speaking with the owner of one of the vehicles in WA and he was running out of belt adjustment every 10,000klm. BD blame Bullet for not upgrading from the start, but now it will be offered as a standard I believe.