COMP Cams LSR Series hydraulic roller camshafts feature modern lobe profiles that take full advantage of high-flowing late model GM LS3 rectangular port cylinder heads. They are tailored for a specific rpm range and usage, from torque to high-rpm horsepower. Give your Chevy LS3 engine a shot in the arm with one of these COMP Cams LSR Series hydraulic roller camshafts.
- Cam Style:
- Hydraulic roller tappet
- Basic Operating RPM Range:
- 1,900-7,000
- Intake Duration at .050 inch Lift:
- 227
- Exhaust Duration at .050 inch Lift:
- 243
- Duration at .050 inch Lift:
- 227 int./243 exh.
- Advertised Intake Duration:
- 277
- Advertised Exhaust Duration:
- 293
- Advertised Duration:
- 277 int./293 exh.
- Intake Valve Lift with Factory Rocker Arm Ratio:
- 0.614 in.
- Exhaust Valve Lift with Factory Rocker Arm Ratio:
- 0.624 in.
- Valve Lift with Factory Rocker Arm Ratio:
- 0.614 int./0.624 exh.
- Lobe Separation (degrees):
- 113
- Computer-Controlled Compatible:
- Yes
- Material:
- Billet Steel
- Camshaft Gear Attachment:
- 3-bolt
- Valve Springs Required:
- No
- Grind Number:
- 277LRR HR13
- Camshaft Manufacturers Description:
- Hydraulic Roller - LSR Rectangular Port: Will not work with factory computer program, variable valve timing, or active fuel management.
- Quantity:
- Sold individually.
- Notes:
- Will not work with factory computer program, variable valve timing, or active fuel management.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen III/IV (LS-based engines)
- Engine Sizes:
- 4.8L/294-7.0L/427
- Years:
- 1997-2019
