SKU: 54-471-11

54-471-11 LSR Rectangular Port 239/255 Hydraulic Roller Cam for GM LS GEN III/IV


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Broad top end power range for high RPM, race only LS engines with aftermarket rectangular port heads and higher compression.


SKU 54-471-11
Barcode # 036584195337
Lifters Included No
Camshaft Series LSR Rectangular Port All Out Power
Exhaust Duration At .050 Inch Lift 255
Advertised Exhaust Duration 305
intake valve lift 0.624
Camshaft Gear Attachment 3-Bolt
Basic Operating Rpm Range 2,400-7,200
Lobe Separation 114
Cam Type Hydraulic Roller
Lifter Type Hydraulic Roller
Valve Springs Required Yes
Grind Number 289LRR HR14
Intake Duration At .050 Inch Lift 239
Advertised Intake Duration 289
Exhaust Valve Lift 0.624
Camshaft Material Billet Steel


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