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Part Number: 271280/290
Grind Number: RR-280/290
Lifter Type: Hydraulic Roller
Engine Family: LS1
1997-On, Vortec 1990-On
4800-5300, 6000
Cam
Family: Hydraulic Roller
Excellent mid-range performance. Fair idle. 2500 stall. 3.70-4.00 axle ratio. Up to 10.5:1 comp. Up to 750 CFM Carb.
SpecificationsRPM
Range: 2500-6800
Lobe
Separation Angle: 113°
Valve Lash: Intake .000". /
Exhaust .000".
Advertised
Duration: Intake 280° /
Exhaust 290°
Duration
@ .050" Lift: Intake 232°
/ Exhaust 242°
Valve
Lift: Intake .530" / Exhaust
.540"