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COMP CamsMore from COMP Cams

COMP Cams Stage 2 Thumpr Cam for GEN IV LS 4.8/5.3/6.0L Trucks

Part # 54-703-11

Description

Stage 2 Thumpr 227/237 Hydraulic Roller Cam

Specifications

Advertised Exhaust Duration299 deg
Advertised Intake Duration282 deg
Amazon ASINB07M6297DT
Assembly Lubricant IncludedNo
Basic Operating RPM Range1,800-6,600 RPM
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?No
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?Yes, but must be a race/competition only vehicle.
Cam TypeHydraulic Roller
Camshaft Gear Attachment3-Bolt
Camshaft MaterialBillet Steel
Camshaft SeriesThumpr NSR (No Springs Required)
CK-Kit UpgradeCK54-703-11
Engine FamilyGM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
Exhaust Duration at .050 inch Lift237 deg
Exhaust Valve Lift0.612 in
Grind Number282LTH13
Intake Duration at .050 Inch Lift227 deg
Intake Valve Lift0.614 in
Lifter TypeHydraulic Roller
Lifters IncludedNo
Lobe Separation113 deg
MK-Kit UpgradeMK54-703-11
Recommended Cam Install Kit5621
Recommended Max-Lift BSR Shaft Rocker System1981-16
Recommended Upgraded Stock Rocker Arms1477-16
Stage2
UsageStreet / Performance
UPC / GTIN00036584386438