Using the same supercharger...
Using the same supercharger and Ford mechanicals as the '07-'09 GT500, the '10 Shelby with a Kenne Bell supercharger delivers between 635- and 645-rear-wheel horsepower on pump gas-the same as its predecessor. The '10 Shelby dyno mule Ken Christley is adjusting here is owned by off-road racer B. J. Baldwin (Baja, Dakar). Originally silver, it now sports a flat-black scheme.
As it turns out, getting there was all the fun thanks to the addition of knock sensors. So, while the '10 GT500 hardware is a carryover from '09, much of the electronic strategies have changed with the move to knock sensors by Ford. In fact, this is the first time a Ford-supercharged car has used knock sensors, so sorting out the electronics was a new headache for ace Kenne Bell engineer Ken Christley.
Lou Barlow removes the stock...
Lou Barlow removes the stock GT500 air inlet system during the start of the Kenne Bell blower installation. Right behind the hood prop rod is the oval inlet for the '10's unique secondary air inlet, or snorkel.
A quick review is probably the best place to start, so let's recall the '10 GT500 uses an Eaton roots-type supercharger and air-to-water charge cooling to make 540 hp at the flywheel. Kenne Bell's kit replaces the Ford blower with their own 2.8-liter Twin Screw supercharger for greater blower efficiency and more tunability (read that as simpler pulley changes). This requires a minimal amount of hardware replacement because the Kenne Bell supercharger perches atop the stock Ford intake manifold, uses the Ford charge cooling system, belt drive, fuel system, and ignition.
Pinched in its middle, the...
Pinched in its middle, the snorkel nonetheless supplies the extra air the '10 GT500 needs to make its 540 stock flywheel horsepower. The snorkel is being held just above its normally installed position where it passes through the radiator support.
KB is supplying the blower with a 3.250-inch drive pulley. This yields 15 to 15.5 pounds of boost, the most possible with 91-octane pump gasoline before detonation sets in. As West Coast readers know, 91-octane is the highest octane gas available on the left coast; East Coasters can run the same electronic tune with a 3-inch blower pulley for 45 more rwhp over the West Coast guys. That should put the West Coast customers at 640 rwhp while the East Coast guys are nominally at 690 rwhp although some report seeing 700-plus rwhp (and Virgin Marys in warehouse windows, for all we know).
Other Kenne Bell hardware in its '10 kit is the Mammoth blower inlet casting, DiabloSport Mafia mass-air extender, SCT Flash Tuner, and KB's dual Boost-A-Pump voltage booster for the Shelby's dual fuel pumps. There is no Boost-A-Spark as the Ford ignition is more than adequate. Because it is mechanically identical to the '07-'09 kit, '10 kit pricing is also the same at $5,999
OK, so what did Kenne Bell do to get their GT500 kit on the '10 snake? On the hardware side nothing. Well, for the first batch of kits the oval mass air meter housing KB supplies will be powdercoated gray instead of natural cast aluminum due to a cosmetic finish foul-up by KB's foundry, so there's a bit of trivia for MCA judges 30 years hence.