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Part Number: 271265/275
Grind Number: RR-265/275
Lifter Type: Hydraulic Roller
Engine Family: LS1
1997-On, Vortec 1990-On
4800-5300, 6000
Cam
Family: Hydraulic Roller
Good mid-range power. Good vacuum & good idle. 3.23-3.70 axle ratio. 9.5-10.5:1 comp. Computer compatible with stage 1 chip. Stock converter. Up to 650 CFM Carb.
SpecificationsRPM
Range: 2000-6000
Lobe
Separation Angle: 113°
Valve Lash: Intake .000". /
Exhaust .000".
Advertised
Duration: Intake 265° /
Exhaust 275°
Duration
@ .050" Lift: Intake 220°
/ Exhaust 230°
Valve
Lift: Intake .530" / Exhaust
.550"