Accufab Plenum for 4.6L

This NEW Accufab plenum is the perfect mod to any 4.6Liter 2V block. Outflowing the stock plenum by 37 Percent (620CFM compared to 460CFM). This offers not only peak power increase (10HP and 15FT/Lbs on bolt on GT), but power across the ENTIRE power band. There is an increase of torque at every RPM on the dyno chart. As shown with Accufab 70mm throttle body. Also fits with the Accufab 75mm throttle body.

Dyno proven 9.2HP and 15.1FT Lbs!

"The run in red is with the Accufab unit installed. You can see that two of Accufab's goals are in black and white. Power across the entire RPM range and no drop off in power or torque anywhere. The third was experienced on the way home. dyno, the GT base lined with 252.6 horsepower and 285.9 foot pounds of torque at the tires. After an honest ten minutes of work, James had the Ford piece off the car and the Accufab unit in place ready for the second dyno pull. The car was at operating temperatures for both runs, as not to skew the results with a cold engine. The second dyno run resulted in an increase of 9.2 HP, 261.8 and 15.9 Ft Lbs., 301.8. This is outstanding results for a simple ten-minute bolt on. Accufab Plenum