COMP Cams Camshaft CS X4 270H-11

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PLEASE CONTACT US DIRECTLY BEFORE PLACING ANY ORDERS TO CHECK AVAILABILITY ON ITEMS! SOME ITEMS MAY BE OUT OF STOCK WITHOUT ANY INDICATION. IF AN ORDER IS PLACED WITHOUT CONTACTING US DIRECTLY AND NEEDS TO BE CANCELLED, THERE IS UP TO A 10% CANCELLATION FEE!

  • This is a SPECIAL ORDER item and availability can vary, please contact us for an accurate timeframe of availability before purchase. Some items can take 30+ days from manufacturer to become available.***ANY SPECIAL ORDER PLACED WITHOUT CONTACTING US FIRST IS SUBJECT UP TO A 10% CANCELLATION FEE***

  • Manufacturer Part Number: 12-243-3
  • $210.95
    Unit price per 


  • WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. PROP65 INFO
Fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350 and 400. Does not fit LT1/LT4, or factory roller Small Blocks built from 1985 and newer. GM gradually added roller camshafts to 305's and 350's from the mid 80's forward. Camaros/Firebirds/Corvettes received the roller cams early, but many trucks and SUV's had flat tappet cams until the mid 90's. Remove the intake or timing cover to confirm whether the block is a factory roller or flat tappet. Does not fit the LS1, LS2, LS3 or any LS-based 4.8, 5.3, 5.7, 6.0 and 6.2. 1955-1957 Chevrolet 265 engines require a groove on the 5th cam journal for oiling. Contact us for more information.

This Part Fits:

Year Make Model Submodel
1995-1996 AM General Hummer Base
1980-1985,1987-1991 Avanti II Base
1985 Avanti II GT
1980-1981 Buick Century Base
1980-1981 Buick Century Estate
1980-1981 Buick Century Limited
1981 Buick Century Sport
1991-1996 Buick Commercial Chassis Base
1980-1989 Buick Electra Estate Wagon
1980-1984 Buick Electra Limited
1980-1984 Buick Electra Park Avenue
1980-1983 Buick Estate Wagon Base
1980-1981 Buick LeSabre Base
1985 Buick LeSabre Collector's Edition
1982-1985 Buick LeSabre Custom
1985-1990 Buick LeSabre Estate Wagon
1980-1985 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1981 Buick LeSabre Sport
1980-1981,1986-1987 Buick Regal Base
1980-1981,1986-1987 Buick Regal Limited
1980-1985 Buick Riviera Base
1982 Buick Riviera Limited Edition
1983-1985 Buick Riviera Luxury
1980 Buick Riviera S
1981 Buick Riviera T-Type
1983 Buick Riviera XX Anniversary Edition
1992-1995 Buick Roadmaster Base
1996 Buick Roadmaster Collector's Edition
1991-1995 Buick Roadmaster Estate Wagon
1996 Buick Roadmaster Estate Wagon Collector's Edition
1992-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Limited Collector's Edition
1987-1992 Cadillac Brougham Base
1987-1992 Cadillac Brougham d'Elegance
1994-1996 Cadillac Commercial Chassis Base
1992-1996 Cadillac Commercial Chassis Brougham
1980 Cadillac Eldorado Base
1980 Cadillac Eldorado Biarritz
1980 Cadillac Eldorado Cabriolet
1993-1996 Cadillac Fleetwood Base
1986,1993-1996 Cadillac Fleetwood Brougham
1986 Cadillac Fleetwood Brougham d'Elegance
1980 Cadillac Seville Base
1980 Cadillac Seville Elegante
2006-2009 Cadillac STS V
2006-2009 Cadillac XLR V
1980-1982 Checker Marathon Base
1980-1982 Checker Marathon Deluxe
1994 Chevrolet Blazer Base
1992-1993 Chevrolet Blazer Cheyenne
1987 Chevrolet Blazer Custom Deluxe
1988-1991 Chevrolet Blazer Scottsdale
1987-1994 Chevrolet Blazer Silverado
1994 Chevrolet Blazer Silverado Sport
1980 Chevrolet C10 Big Ten
1980-1981 Chevrolet C10 Cheyenne
1981-1986 Chevrolet C10 Custom
1980 Chevrolet C10 Custom Deluxe
1981 Chevrolet C10 Deluxe
1980-1986 Chevrolet C10 Scottsdale
1980-1986 Chevrolet C10 Silverado
1981-1986 Chevrolet C10 Suburban Custom
1980 Chevrolet C10 Suburban Custom Deluxe
1981 Chevrolet C10 Suburban Deluxe
1980,1982,1984-1986 Chevrolet C10 Suburban Scottsdale
1980,1982-1986 Chevrolet C10 Suburban Silverado
1994-1997 Chevrolet C1500 Base
1988-1998 Chevrolet C1500 Cheyenne
1999 Chevrolet C1500 LS
1988-1992 Chevrolet C1500 Scottsdale
1988-1998 Chevrolet C1500 Silverado
1990-1998 Chevrolet C1500 WT
1992-1995 Chevrolet C1500 Suburban Base
1995 Chevrolet C1500 Suburban LS
1995 Chevrolet C1500 Suburban LT
1992-1994 Chevrolet C1500 Suburban Silverado
1980-1981 Chevrolet C20 Cheyenne
1981-1986 Chevrolet C20 Custom
1980 Chevrolet C20 Custom Deluxe
1981 Chevrolet C20 Deluxe
1980-1986 Chevrolet C20 Scottsdale
1980-1986 Chevrolet C20 Silverado
1981-1986 Chevrolet C20 Suburban Custom
1980 Chevrolet C20 Suburban Custom Deluxe
1981 Chevrolet C20 Suburban Deluxe
1980,1982,1984-1986 Chevrolet C20 Suburban Scottsdale
1980,1982-1986 Chevrolet C20 Suburban Silverado
1994-1997,1999 Chevrolet C2500 Base
1988-1998 Chevrolet C2500 Cheyenne
1999 Chevrolet C2500 LS
1988-1992 Chevrolet C2500 Scottsdale
1988-1998 Chevrolet C2500 Silverado
1994-1995,1998 Chevrolet C2500 WT
1992-1995 Chevrolet C2500 Suburban Base
1995 Chevrolet C2500 Suburban LS
1995 Chevrolet C2500 Suburban LT
1992-1994 Chevrolet C2500 Suburban Silverado
1980-1981 Chevrolet C30 Cheyenne
1981-1986 Chevrolet C30 Custom
1980 Chevrolet C30 Custom Deluxe
1981 Chevrolet C30 Deluxe
1980-1986 Chevrolet C30 Scottsdale
1980-1986 Chevrolet C30 Silverado
1994-1995 Chevrolet C3500 Base
1988-1995 Chevrolet C3500 Cheyenne
1988-1992 Chevrolet C3500 Scottsdale
1988-1995 Chevrolet C3500 Silverado
1980,1988 Chevrolet Camaro Base
1980-1986 Chevrolet Camaro Berlinetta
1985-1990 Chevrolet Camaro Iroc-Z
1987 Chevrolet Camaro LT
1980 Chevrolet Camaro Rally Sport
1989-1992 Chevrolet Camaro RS
1992 Chevrolet Camaro RS Heritage Edition
1981-1987 Chevrolet Camaro Sport
1980-1987,1991-1992 Chevrolet Camaro Z28
1992 Chevrolet Camaro Z28 Heritage Edition
1982 Chevrolet Camaro Z28 Indianapolis 500 Pace Car
1986-1992 Chevrolet Caprice Base
1980-1996 Chevrolet Caprice Classic
1986-1990 Chevrolet Caprice Classic Brougham
1981-1982 Chevrolet Caprice Classic Estate
1980-1981 Chevrolet Caprice Classic Landau
1993-1994 Chevrolet Caprice Classic LS
1987-1990 Chevrolet Caprice Classic LS Brougham
1991-1993 Chevrolet Caprice Classic LTZ
1980 Chevrolet Caprice Classic Sport
1991-1994 Chevrolet Commercial Chassis Base
1980-1982,1984-1986 Chevrolet Corvette Base
1982 Chevrolet Corvette Collector's Edition
1986 Chevrolet Corvette Indianapolis 500 Pace Car
1980-1987 Chevrolet El Camino Base
1981-1986 Chevrolet El Camino Conquista
1980-1981 Chevrolet El Camino Royal Knight
1980-1987 Chevrolet El Camino SS
1996-2002 Chevrolet Express 1500 Base
1996-2002 Chevrolet Express 1500 LS
2001-2002 Chevrolet Express 1500 LT
1996-2002 Chevrolet Express 2500 Base
1996-2002 Chevrolet Express 2500 LS
1983 Chevrolet G10 Base
1980-1995 Chevrolet G10 Beauville
1981-1984,1986-1987 Chevrolet G10 Bonaventure
1980-1995 Chevrolet G10 Chevy Van
1980-1995 Chevrolet G10 Sportvan
1980-1995 Chevrolet G20 Beauville
1983-1984 Chevrolet G20 Bonaventure
1980-1995 Chevrolet G20 Chevy Van
1980-1981 Chevrolet G20 Nomad
1980-1995 Chevrolet G20 Sportvan
1980-1996 Chevrolet G30 Beauville
1983-1984 Chevrolet G30 Bonaventure
1980-1996 Chevrolet G30 Chevy Van
1980-1996 Chevrolet G30 Hi-Cube
1980-1996 Chevrolet G30 Sportvan
1980-1985 Chevrolet Impala Base
1981-1982 Chevrolet Impala Estate
1980 Chevrolet Impala Sport
1994-1996 Chevrolet Impala SS
1980-1981 Chevrolet K10 Cheyenne
1981-1986 Chevrolet K10 Custom
1980 Chevrolet K10 Custom Deluxe
1981 Chevrolet K10 Deluxe
1980-1986 Chevrolet K10 Scottsdale
1980-1986 Chevrolet K10 Silverado
1981-1986 Chevrolet K10 Suburban Custom
1980 Chevrolet K10 Suburban Custom Deluxe
1981 Chevrolet K10 Suburban Deluxe
1980,1982,1984-1986 Chevrolet K10 Suburban Scottsdale
1980,1982-1983,1985-1986 Chevrolet K10 Suburban Silverado
1994-1997 Chevrolet K1500 Base
1988-1998 Chevrolet K1500 Cheyenne
1999 Chevrolet K1500 LS
1988-1992 Chevrolet K1500 Scottsdale
1988-1998 Chevrolet K1500 Silverado
1991 Chevrolet K1500 Sport
1990-1998 Chevrolet K1500 WT
1992-1995 Chevrolet K1500 Suburban Base
1995 Chevrolet K1500 Suburban LS
1995 Chevrolet K1500 Suburban LT
1992-1994 Chevrolet K1500 Suburban Silverado
1980-1981 Chevrolet K20 Cheyenne
1981-1986 Chevrolet K20 Custom
1980 Chevrolet K20 Custom Deluxe
1981 Chevrolet K20 Deluxe
1980-1986 Chevrolet K20 Scottsdale
1980-1983,1985-1986 Chevrolet K20 Silverado
1981-1986 Chevrolet K20 Suburban Custom
1980 Chevrolet K20 Suburban Custom Deluxe
1981 Chevrolet K20 Suburban Deluxe
1980,1982,1984-1986 Chevrolet K20 Suburban Scottsdale
1980,1982-1983,1985-1986 Chevrolet K20 Suburban Silverado
1994-1995 Chevrolet K2500 Base
1988-1995,1998 Chevrolet K2500 Cheyenne
1988-1992 Chevrolet K2500 Scottsdale
1988-1995,1998 Chevrolet K2500 Silverado
1994-1995,1998 Chevrolet K2500 WT
1992-1995 Chevrolet K2500 Suburban Base
1995 Chevrolet K2500 Suburban LS