Comp Cams Xtreme Energy XR288HR Hydraulic Roller Cam CCA-51-433-11
Lift with 1.65 ratio rockers: .571/.594
Lobe Separation Angle: 110°
RPM Range: 2200-6000
|•||Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve|
|•||More vacuum allows a step up in duration for greater performance|
|•||Best seller; excellent all around performance in street carbureted applications|
|•||Work best with COMP Cams® roller rockers and matched valve springs|
|•||Require other performance parts (intake manifold, headers, etc.) for best performance|
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- 10.0 lbs.
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Total Reviews (1)
Reviewed by: Mark12/04/2020 04:11PM
Product ownership: A year or longer
Purchased from: Butler Performance Inc.
I have this cam in my 1974 T/A 455 Super Duty engine. I am running stock intake, 9.7:1 compression, stock #16 SD heads, re-jetted Rochester carb, stock round port exhaust manifolds, low restriction 2.5 in exhaust and spintech 16 inch long mufflers, 3.42 limited slip, Tremec TKO-600 manual 5 speed and twin disc McLeod clutch. Incredible torque starting at 2200 rpm up to 5500 where I shift. This is the best cam I have ever run in a 455, and I've run 3 others but in flat tappet. It has plenty of vacuum, idles at 750+ rpm, and runs air conditioning on the street. Might be a little hot for a 400 cu in motor, but just right for this 455. Nice sounding lope at idle. Gets loose in first and second gear on throttle tip-in, barks the tires (255/60-R15 BFG T/A) on 3rd and 4th gear shift. Purrs in 5th overdrive on the highway with 14-16 mpg. Highly recommend this or the similar Butler custom grind in a hi-po street 455. Butler has competitive pricing and the best advice. Go roller.
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