On my 428CJ, the 390HP intake made 382 peak HP and 472 peak ft-lbs of torque. As a comparison, the Performer RPM, which was one of the top two or three intakes, made 407 peak HP and 484 peak ft-lbs.
Jay Brown
1968 Shelby GT 500 Convertible, 492" 667 HP FE
1969 R code Mach 1, 490" supercharged FE, 9.35 @ 151.20, 2007 Drag Week Runner Up, Power Adder Big Block
2005 Ford GT, 2006 Drag Week Winner, 12.0 Daily Driver
1969 Ford Galaxie XL, 460 (Ho Hum....)
1964 Ford Galaxie 500, 510" SOHC
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