Kenne Bell Supercharger Install and Test - Ring My Bell

Naturally, Mihovetz chose to run an Accufab oval throttle body to feed the supercharged beast.

Suspecting the inlet manifold between the throttle body and supercharger represented a flow restriction, Mihovetz modified one to improve the flow rate.

The new inlet upped the power output of the supercharged combination by 33 hp at 6,500 rpm. Twin-screw superchargers are especially sensitive to inlet restrictions.

Suspecting the 1 5/8-inch street headers might be limiting exhaust flow, we had another set of headers waiting in the wings. The 1 7/8- to 2 1/8-inch stepped race headers were massive but effective on this all-out supercharged combination. Swapping the headers netted as much as 34 hp.

Thinking the factory intercooler core might represent a restriction at this power level, Mihovetz designed his own intercooler system using a core from a 5.4 Ford GT.

The blower pulley change of the day involved increasing the boost pressure from 21.8 psi to 24.8 psi. This was accomplished by changing the blower pulley from the 3.75-inch version to a smaller 3.39-inch pulley.