High performance application, largest with stock converter, noticeable idle.
Camshaft Part #12-422-8 Grind #XR270HR-10 Duration @ 0.006": 270/ 276deg. Duration @ 0.050": 218 / 224deg. Max Lift w/ 1.5RR: .495" / .502" Lobe Separation: 110deg. Lobe ID#'s: 3313 / 3314. Intake Centerline: 106deg. Engine Type: Chevrolet 350 Small Block Bore: 4.040" Stroke: 3.480". Displacement: 356ci. Compression: 9.25:1 Heads: Dart S/R. Intake: Edelbrock performer. Carburetor: Holley #3310 Vac. Sec. Exhaust: 1 5/8" Headers. Max Torque: 415 ft/lbs @ 3800 RPM. Max Power: 342 HP @ 5100 RPM. Manifold Vacuum: 15" Hg @ 800 RPM & 16.5" Hg @ 1000 RPM w/ no load.

Application Summary:

Year Make/Model
1995-1996 AM General Hummer
1965-1985 Avanti II
1987-1991 Avanti II
1965-1969 Bizzarrini GT America
1973-1974 Buick Apollo
1973 Buick Centurion
1973-1974 Buick Century
1977-1981 Buick Century
1991-1996 Buick Commercial Chassis
1970 Buick Estate Wagon
1973 Buick Estate Wagon
1970-1972 Buick GS
1968-1969 Buick GS 350
1968-1974 Buick LeSabre
1978 Buick LeSabre
1973-1974 Buick Regal
1977-1980 Buick Regal
1982-1987 Buick Regal
1991-1996 Buick Roadmaster
1968-1972 Buick Skylark
1977-1979 Buick Skylark
1968-1969 Buick Special
1968-1972 Buick Sportwagon
1990-1992 Cadillac Brougham
1992-1996 Cadillac Commercial Chassis
1993-1996 Cadillac Fleetwood
1966-1974 Checker Aerobus
1969-1970 Checker Deluxe
1965-1982 Checker Marathon
1969-1974 Checker Taxicab
1959 Chevrolet 3B
1959 Chevrolet 3C
1959 Chevrolet 3D
1959 Chevrolet 3E
1959 Chevrolet 3F
1959 Chevrolet 3G
1980-1990 Chevrolet B60
1955-1975 Chevrolet Bel Air
1981 Chevrolet Bel Air
1958-1972 Chevrolet Biscayne
1969-1974 Chevrolet Blazer
1987-1994 Chevrolet Blazer
1959-1961 Chevrolet Brookwood
1969-1972 Chevrolet Brookwood
1975-1986 Chevrolet C10
1960-1974 Chevrolet C10 Pickup
1967-1986 Chevrolet C10 Suburban
1982-1985 Chevrolet C15
1988-1995 Chevrolet C1500
1992-1995 Chevrolet C1500 Suburban
1975-1987 Chevrolet C20
1960-1974 Chevrolet C20 Pickup
1967-1986 Chevrolet C20 Suburban
1988-1995 Chevrolet C2500
1992-1995 Chevrolet C2500 Suburban
1975-1986 Chevrolet C30
1960-1974 Chevrolet C30 Pickup
1983-1994 Chevrolet C35
1988-1995 Chevrolet C3500
1991-1995 Chevrolet C3500HD
1960-1962 Chevrolet C40
1980-1990 Chevrolet C50
1980-1990 Chevrolet C60
1986 Chevrolet C70
1967-1986 Chevrolet Camaro
1966-1996 Chevrolet Caprice
2000 Chevrolet Cargo Van
1967-1973 Chevrolet Chevelle
1963-1968 Chevrolet Chevy II
1991-1994 Chevrolet Commercial Chassis
1955-1982 Chevrolet Corvette
1984-1986 Chevrolet Corvette
1957-1958 Chevrolet Del Ray
1959-1960 Chevrolet El Camino
Attributes
Advertised Exhaust Duration 276, 276, 276
Advertised Intake Duration 270, 270, 270
Amazon ASIN B000CESFKQ, B000CESFKQ
ASIN B000CESFKQ
Assembly Lubricant Included No, No, No
Basic Operating RPM Range 1,600-5,400, 1,600-5,400, 1,600-5,400
C.A.R.B. E.O. Number N/A, N/A
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? Yes, but must meet tailpipe emission standards for year of vehicle., Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles? No, No
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? Yes, but must be a race/competition only vehicle., Yes, but must be a race/competition only vehicle.
C.A.R.B. Exemption Reason N/A, N/A
California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Cam and Lifter Kit Upgrade CL12-422-8, CL12-422-8, CL12-422-8
Cam Type Hydraulic Roller, Hydraulic Roller, Hydraulic Roller
Camshaft Gear Attachment 3-Bolt, 3-Bolt, 3-Bolt
Camshaft Material Austempered Ductile Iron, Austempered Ductile Iron, Austempered Ductile Iron
Camshaft Series Xtreme Energy, Xtreme Energy
Country of Origin (Primary) US
Emission Code Not in CA
Engine Family Chevrolet 262-400 c.i. 8 Cylinder (1958-1998), Chevrolet 262-400 c.i. 8 Cylinder (1958-1998), Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Engine Make/Size Chevy Small Block (262-400)
Exh. Duration @ .050 in. (Deg) 224
Exh. Duration Advertised (Deg) 276
Exhaust Duration at .050 inch Lift 224, 224, 224
Exhaust Valve Lift 0.502, 0.502, 0.502
Exhaust Valve Lift (in.) 0.502
Grind Number XR270HR, XR270HR
Harmonized Tariff Code (Schedule B) 8409914000
Hazardous Material Code N
Int. Duration @ .050 in. (Deg) 218
Int. Duration Advertised (Deg) 270
Intake Duration at .050 Inch Lift 218, 218, 218
Intake Valve Lift 0.495, 0.495, 0.495
Intake Valve Lift (in.) 0.495
K-Kit Upgrade K12-422-8, K12-422-8, K12-422-8
Life Cycle Status Code Available to Order
Lifter Style Hydraulic Roller
Lifter Type Hydraulic Roller, Hydraulic Roller, Hydraulic Roller
Lifters Included No, No, No
Lobe Separation 110, 110, 110
NAFTA Preference Criterion Code B
RPM Range 1600-5400
SDR Required Flag N
SDS Sheet Number N/A
SK-Kit Upgrade SK12-422-8, SK12-422-8, SK12-422-8
Usage Street/Performance, Street/Performance
Valve Springs Required Yes, Yes, Yes
Warranty Time 12
GTIN 00036584025153

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