Comp Cams 275 Xtreme Hi Lift Ls1 Camshaft #54-426-11
08-28-2007, 07:06 AM
#1
Staging Lane
Thread Starter
iTrader: (5)
Join Date: Jan 2005
Posts: 84
Likes: 0
Received 0 Likes
on
0 Posts
Comp Cams 275 Xtreme Hi Lift Ls1 Camshaft #54-426-11 I have a comp cams GEN III/LS1/LS6 350 Xtreme RPM HIGH LIFT XR275HR Cam with 200 miles on it. Its basically brand new.
$200 for cam or $250 with the comp 918 springs
Camshaft, Hydraulic Roller Tappet, Advertised Duration 275/277, Lift .566/.568, Chevy, LS1/LS6, Each
HYDRAULIC ROLLER-Great street / strip camshaft for midrange and high rpm power. Must have computer modifications
GEN III/LS1/LS6 350 Xtreme RPM HIGH LIFT XR275HR Cam
Comp Cams' Xtreme Energy series can be used in any street or street/strip application where both throttle response and top-end horsepower is desired. These cams are designed to take advantage of the latest improvements in valve train components and the newest developments in camshaft design. Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum.
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,800-6,800 RPM
Intake Duration at 050 inch Lift: 222
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 222 int./224 exh.
Advertised Intake Duration: 275
Advertised Exhaust Duration: 277
Advertised Duration: 275 int./277 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.566 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.568 in.
Valve Lift with Factory Rocker Arm Ratio: 0.566 int./0.568 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
$200 for cam or $250 with the comp 918 springs
Camshaft, Hydraulic Roller Tappet, Advertised Duration 275/277, Lift .566/.568, Chevy, LS1/LS6, Each
HYDRAULIC ROLLER-Great street / strip camshaft for midrange and high rpm power. Must have computer modifications
GEN III/LS1/LS6 350 Xtreme RPM HIGH LIFT XR275HR Cam
Comp Cams' Xtreme Energy series can be used in any street or street/strip application where both throttle response and top-end horsepower is desired. These cams are designed to take advantage of the latest improvements in valve train components and the newest developments in camshaft design. Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum.
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,800-6,800 RPM
Intake Duration at 050 inch Lift: 222
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 222 int./224 exh.
Advertised Intake Duration: 275
Advertised Exhaust Duration: 277
Advertised Duration: 275 int./277 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.566 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.568 in.
Valve Lift with Factory Rocker Arm Ratio: 0.566 int./0.568 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
04-28-2009, 07:16 AM
#5
I'm not sure what the "advertised" duration is all about, but I have a CC 222/224 .566/.568 @ 112 in my SS. It's VERY street friendly, has a good lope, put 400 to the wheels with bolt-ons, exhaust, and stock heads, and currently runs 10.30's on a 150 shot. Good cam. 
