OST Dyno Dedicated Drive 8-Rib System for 2.9L Whipple


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These kits are currently made to order please allow at least one week for us to build the kit and ship.

Downloadable Installation Instructions: Whipple 8-Rib Install Guide R2

This conversion kit is designed for 2011+ VVT 5.7 & 6.4 engines with previously installed Whipple 2.9L supercharger kits. This system will produce between 17-26psi (depending on your head/cam combo) with little to no belt slip.

Warning! – This system makes and holds boost like no other system on the market. At high boost levels there is a tremendous amount of strain on your engine, supercharger and supercharger seals. One customer reported producing 26psi with his head/cam/pulley combination! At this level of boost he lifted the supercharger off of the intake – so we know our system works! Pulley size/boost readings are on an engine with a mild to aggressive camshaft. Add 2-3psi to the boost numbers with a stock or very mild cam.

This kit will significantly reduce or eliminate belt slip at high boost, reduce the strain on the accessories (water pump, alternator, A/C), and provide a tight supercharger belt without the need to use an expensive aftermarket tensioner. We do this all while using factory parts and retaining factory-like appearance and serviceability. Another significant advantage of our dedicated drive system is that if the supercharger belt were to break, all accessories would still function and the vehicle would be completely driveable; no loss of water pump, power steering, or alternator.

Our front support brace design eliminates any flexing of the supercharger jackshaft (apparent even on the 6-rib system). The front brace is also designed with the racer in mind – with an easily removable top section allowing for quick pulley and belt changes at the track.

Please note, this kit moves the SC heat exchanger and radiator forward 1″ to accommodate the 8-rib crank pulley. Please consider this if you have additional coolers mounted in front of your radiator.

This kit includes the following:
– Custom OST Dyno billet 6061 aluminum bracket
– Custom OST Dyno billet 6061 aluminum pulley mounts
– Custom OST Dyno billet 6061 aluminum front support brace
– 8-rib 8.650″ crankshaft pulley
– 8-rib upper supercharger pulley (choose size when ordering)
– 8- rib idler pulleys
– 8-rib supercharger tensioner
– 8-rib supercharger belt
– ATI 6% OD crank damper
– 6-rib serpentine belt
– All hardware needed
– Custom radiator brackets
– Custom heat exchanger brackets
– Installation instructions (view in link at top of page)

The “Hot Rod” kits will not include and radiator or heat exchanger parts. These parts will not be needed on WK2 Jeeps and non-Gen3 Hemi vehicles. WK2 Jeeps will need to make a custom length upper radiator hose.

This system is designed to use the included ATI 6% OD damper. If you already have this equipped, please purchase the option without the damper.

Note: You will need to enlarge the hole cut in your hood that was made for the initial Whipple install.

Shipping to lower 48 only. If shipping elsewhere we will contact your for any additional charges.


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