Kenne Bell 8 Rib Belt System Upgrades

8 RIB BELT SYSTEM UPGRADE

The 8 rib system helps eliminate any belt slippage associated with 6 rib systems and high boost. 33% more belt contact surface area. OK to 20 psi. 8 rib kit is complete with all engine accessory pulleys, 6.5" machined face crank pulley (7.5" and 8.5" can be bolted to this pulley, but the 8.5" requires 3 bolt style tensioner), spacers and brackets. Belt included. Max boost is 6.5"x2.75"=15 psi (2.36 ratio), 7.5"x2.75"=17 psi (2.72 ratio) and 8.5"x2.75"=20 psi (3.1 ratio). Note: 8.5" requires Meziere electric water pump and alternator underdrive pulley and 3 bolt style tensioner. Supercharger pulleys are available in 1/4" / 2 psi increments.

8 RIB KIT COMPONENTS
• Crank Pulley (6.5")
• Water Pump Pulley (5.0")
• Tensioner (3 bolt style only)
• Tensioner Bracket
• Alternator Pulley
• Alternator Spacer and Brace
• Flat Idler Pulley
• Flat Idler Spacer
• Power Steering Pulley
• AC Pulley

Part# F2600-1 (for 1 bolt tensioner)
Part# F2600-3 (for 3 bolt tensioner)

Note: Kit components not sold separately

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8 RIB 7.5" CRANK OVER PULLEY KIT

Increases boost 3 psi over 6.5" pulley. Includes 7.5" crank pulley, belt and hardware. Pulley bolts to special Kenne Bell machined face 6.5" 8 rib crank pulley allowing use of either 6.5" or 7.5". Works with all stock accessories. Note: 3 bolt tensioner uses KO81177 belt. 1 bolt tensioner uses KO81145 belt.

Part# F2601-1 (for 1 bolt tensioner)
Part# F2601-3 (for 3 bolt tensioner)

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8 RIB 8.5" CRANK OVER PULLEY KIT

(works with 3 bolt style tensioner only)

Increase boost 3 psi over 7.5" and 6 psi over 6.5". Includes 8.5" crank pulley and hardware. Pulley bolts to special machined face 6.5" 8 rib crank pulley which accepts either the 7.5" or 8.5". Includes tensioner idler pulley. Must use Meziere (phone#760-746-3273) electric water pump and underdrive alternator pulley. Using a smaller 4" water pump pulley to obtain clearance for the big 8.5" will reduce power by 26HP. Customer must determine belt size based on pulley combination used. Use K081145 for 20 psi.

Pulley Notes: DO NOT attempt to bolt the Kenne Bell 7.5" and 8.5" pulleys to the stock 4.6 GT pulley or other cast face pulley. Must use Kenne Bell machined 6-1/2" pulley.

Note: If using 8.5" with a 1 bolt style tensioner, the 4.6 GT front cover must be switched to a 3 bolt style tensioner cover.

Part# F2602-3 (for 3 bolt tensioner)

Note: 8.5" not available for 1" bolt tensioner. Must replace front engine cover.