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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Comp Cams CB XS274S-10XS274S Solid Lifter Solid Very strong mid range torque & throttle response, 2500+ stall Chevrolet 396 454 c. i. 8 CYL. 1965 1996 X TREME EnergyT Mechanical Flat Tappet Camshafts Specification RPM Range: 2000 to 6400 Valve Timing: 0. 015 Lobe Separation: 110 Intake Centerline: 106 Intake Exhaust Valve Lash : 0. 016 Duration: 274, 280 Duration @ . 050" Lift: 236, 242 Valve Lift: 0. 568, 0. 578 Lobe Lift: 0. 334, 0. 34 Vehicle Fitments: Year Make Model
- XS274S
- Solid Lifter
- Solid-Very strong mid-range torque & throttle response, 2500+ stall
- Chevrolet 396-454 c.i. 8 CYL. 1965-1996 X
- TREME EnergyT Mechanical Flat Tappet Camshafts
Specification
- RPM Range: 2000 to 6400
- Valve Timing: 0.015
- Lobe Separation: 110°
- Intake Centerline: 106°
Intake/ Exhaust
- Valve Lash : 0.016
- Duration: 274, 280
- Duration @ .050" Lift: 236, 242
- Valve Lift: 0.568, 0.578
- Lobe Lift: 0.334, 0.34
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965 - 1975 | Chevrolet | Bel Air | Base |
| 1965 - 1972 | Chevrolet | Biscayne | Base |
| 1973 - 1974 | Chevrolet | Blazer | Base |
| 1969 - 1972 | Chevrolet | Brookwood | Base |
| 1978 - 1980 | Chevrolet | C10 | Big Ten |
| 1975 - 1980 | Chevrolet | C10 | Silverado, Custom Deluxe, Cheyenne, Custom, Scottsdale |
| 1968 - 1974 | Chevrolet | C10 Pickup | Base |
| 1968 - 1974 | Chevrolet | C10 Suburban | Base |
| 1975 - 1980 | Chevrolet | C10 Suburban | Silverado, Scottsdale, Custom Deluxe |
| 1990 - 1993 | Chevrolet | C1500 | 454 SS, Silverado, WT, Cheyenne |
| 1990 - 1991 | Chevrolet | C1500 | Base |
| 1990 - 1992 | Chevrolet | C1500 | Scottsdale |
| 1986 | Chevrolet | C20 | Base |
| 1981 - 1986 | Chevrolet | C20 | Custom |
| 1975 - 1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975 - 1986 | Chevrolet | C20 | Scottsdale, Silverado, Cheyenne |
| 1968 - 1974 | Chevrolet | C20 Pickup | Base |
| 1968 - 1974 | Chevrolet | C20 Suburban | Base |
| 1981 - 1986 | Chevrolet | C20 Suburban | Custom |
| 1975 - 1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1975 - 1986 | Chevrolet | C20 Suburban | Silverado, Scottsdale |
| 1991 - 1995 | Chevrolet | C2500 | Base, Silverado, Cheyenne |
| 1993 | Chevrolet | C2500 | Custom, 400 SS |
| 1991 - 1992 | Chevrolet | C2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | C2500 | WT |
| 1992 - 1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LT, LS |
| 1992 - 1994 | Chevrolet | C2500 Suburban | Silverado |
| 1975 - 1982 | Chevrolet | C30 | Base |
| 1975 - 1981 | Chevrolet | C30 | Cheyenne |
| 1981 - 1986 | Chevrolet | C30 | Custom |
| 1975 - 1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1975 - 1986 | Chevrolet | C30 | Scottsdale, Silverado |
| 1968 - 1974 | Chevrolet | C30 Pickup | Base |
| 1994 - 1995 | Chevrolet | C3500 | Base |
| 1988 - 1995 | Chevrolet | C3500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | C3500 | Scottsdale |
| 1967 - 1972 | Chevrolet | Camaro | Base, SS, RS, Z28 |
| 1966 - 1974 | Chevrolet | Caprice | Base |
| 1973 - 1976 | Chevrolet | Caprice | Classic |
| 1976 | Chevrolet | Caprice | Classic Estate, Classic Landau |
| 1975 - 1976 | Chevrolet | Caprice | Classic Sport |
| 1973 - 1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1967 - 1968 | Chevrolet | Chevelle | 300 |
| 1967 - 1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1965 - 1972 | Chevrolet | Chevelle | Base, SS |
| 1967 - 1972 | Chevrolet | Chevelle | Concours |
| 1969 - 1972 | Chevrolet | Chevelle | Concours Estate, Greenbrier |
| 1965 - 1973 | Chevrolet | Chevelle | Deluxe |
| 1968 - 1972 | Chevrolet | Chevelle | Nomad, Malibu |
| 1968 | Chevrolet | Chevy II | Nova |
| 1966 - 1974 | Chevrolet | Corvette | Base |
| 1966 - 1975 | Chevrolet | El Camino | Base |
| 1975 | Chevrolet | El Camino | Classic |
| 1968 - 1974 | Chevrolet | El Camino | Custom |
| 1968 - 1975 | Chevrolet | El Camino | SS |
| 1969 - 1970 | Chevrolet | Estate | Base |
| 1973 - 1974 | Chevrolet | G10 Van | Sportvan, Base |
| 1976 | Chevrolet | G20 | Sportvan, Chevy Van, Beauville |
| 1973 - 1974 | Chevrolet | G20 Van | Sportvan, Base |
| 1975 - 1996 | Chevrolet | G30 | Sportvan, Chevy Van, Hi-Cube, Beauville |
| 1973 - 1974 | Chevrolet | G30 Van | Sportvan, Base |
| 1965 - 1976 | Chevrolet | Impala | Base |
| 1975 - 1976 | Chevrolet | Impala | Custom, Sport |
| 1976 | Chevrolet | Impala | S, Custom Landau |
| 1965 - 1967 | Chevrolet | Impala | SS |
| 1976 - 1980 | Chevrolet | K10 | Cheyenne, Custom Deluxe, Scottsdale, Silverado |
| 1968 - 1974 | Chevrolet | K10 Pickup | Base |
| 1968 - 1974 | Chevrolet | K10 Suburban | Base |
| 1976 - 1980 | Chevrolet | K20 | Scottsdale, Custom Deluxe, Cheyenne, Silverado |
| 1968 - 1974 | Chevrolet | K20 Pickup | Base |
| 1968 - 1974 | Chevrolet | K20 Suburban | Base |
| 1985 | Chevrolet | K20 Suburban | Scottsdale, Custom, Silverado |
| 1991 - 1992 | Chevrolet | K2500 | Scottsdale |
| 1991 - 1995 | Chevrolet | K2500 | Silverado, Cheyenne |
| 1994 - 1995 | Chevrolet | K2500 | WT, Base |
| 1992 - 1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LT, LS |
| 1992 - 1994 | Chevrolet | K2500 Suburban | Silverado |
| 1977 - 1981 | Chevrolet | K30 | Cheyenne |
| 1981 - 1986 | Chevrolet | K30 | Custom |
| 1977 - 1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1977 - 1986 | Chevrolet | K30 | Silverado, Scottsdale |
| 1968 - 1974 | Chevrolet | K30 Pickup | Base |
| 1994 - 1995 | Chevrolet | K3500 | Base |
| 1988 - 1992 | Chevrolet | K3500 | Scottsdale |
| 1988 - 1995 | Chevrolet | K3500 | Silverado, Cheyenne |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1976 - 1978 | Chevrolet | K5 Blazer | Cheyenne |
| 1977 - 1978 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1978 | Chevrolet | K5 Blazer | Silverado |
| 1969 - 1972 | Chevrolet | Kingswood | Base, Estate |
| 1973 - 1975 | Chevrolet | Laguna | Base |
| 1973 | Chevrolet | Laguna | Estate |
| 1975 | Chevrolet | Laguna | S3 |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1966 - 1975 | Chevrolet | Malibu | Base |
| 1974 - 1975 | Chevrolet | Malibu | Classic |
| 1975 | Chevrolet | Malibu | Classic Estate |
| 1973 - 1974 | Chevrolet | Malibu | Estate |
| 1970 - 1974 | Chevrolet | Monte Carlo | Base |
| 1973 - 1974 | Chevrolet | Monte Carlo | Landau |
| 1973 - 1975 | Chevrolet | Monte Carlo | S |
| 1969 - 1972 | Chevrolet | Nova | Base |
| 1973 | Chevrolet | P10 Van | Base |
| 1976 - 1979 | Chevrolet | P20 | Step-Van, Base |
| 1970 - 1973 | Chevrolet | P20 Van | Base |
| 1975 - 1997 | Chevrolet | P30 | Base |
| 1975 - 1990 | Chevrolet | P30 | Step-Van |
| 1970 - 1974 | Chevrolet | P30 Van | Base |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987 - 1988 | Chevrolet | R20 | Scottsdale, Silverado, Custom Deluxe |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | R20 Suburban | Scottsdale, Silverado |
| 1989 | Chevrolet | R2500 | Silverado, Cheyenne, Scottsdale |
| 1989 - 1991 | Chevrolet | R2500 Suburban | Scottsdale, Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987 - 1988 | Chevrolet | R30 | Silverado, Custom Deluxe, Scottsdale |
| 1989 - 1991 | Chevrolet | R3500 | Cheyenne, Silverado |
| 1989 - 1990 | Chevrolet | R3500 | Scottsdale |
| 1969 - 1972 | Chevrolet | Townsman | Base |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | V20 Suburban | Scottsdale, Silverado |
| 1990 | Chevrolet | V2500 Suburban | Silverado, Scottsdale |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987 - 1988 | Chevrolet | V30 | Silverado, Custom Deluxe, Scottsdale |
| 1989 - 1990 | Chevrolet | V3500 | Scottsdale |
| 1989 - 1991 | Chevrolet | V3500 | Silverado, Cheyenne |
| 1972 - 1979 | Excalibur | Phaeton | Base |
| 1977 - 1978 | GMC | C15 | Heavy Half |
| 1977 | GMC | C15 | Indy Hauler |
| 1975 - 1978 | GMC | C15 | Sierra Classic, Sierra Grande, Base, High Sierra |
| 1978 | GMC | C15 | Street Coupe |
| 1975 - 1978 | GMC | C15 Suburban | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1968 - 1974 | GMC | C15/C1500 Pickup | Base |
| 1968 - 1974 | GMC | C15/C1500 Suburban | Base |
| 1979 - 1980 | GMC | C1500 | Street Coupe, High Sierra, Sierra Grande, Base, Heavy Half, Sierra Classic |
| 1979 - 1980 | GMC | C1500 Suburban | Sierra Grande, Sierra Classic, High Sierra, Base |
| 1975 - 1978 | GMC | C25 | Base, Sierra Grande, Sierra Classic, High Sierra |
| 1975 - 1978 | GMC | C25 Suburban | Sierra Classic, High Sierra, Base, Sierra Grande |
| 1968 - 1974 | GMC | C25/C2500 Pickup | Base |
| 1968 - 1974 | GMC | C25/C2500 Suburban | Base |
| 1979 - 1986 | GMC | C2500 | Sierra Classic, Base, High Sierra |
| 1979 - 1982 | GMC | C2500 | Sierra Grande |
| 1991 - 1996 | GMC | C2500 | Sierra SLE |
| 1994 - 1996 | GMC | C2500 | Sierra SLT, Sierra SL |
| 1991 - 1993 | GMC | C2500 | Sierra SLX, Sierra |
| 1979 - 1995 | GMC | C2500 Suburban | Base |
| 1979 - 1986 | GMC | C2500 Suburban | High Sierra, Sierra Classic |
| 1979 - 1982 | GMC | C2500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | C2500 Suburban | SLE |
| 1995 | GMC | C2500 Suburban | SLT |
| 1975 - 1978 | GMC | C35 | Sierra Grande, High Sierra, Sierra Classic, Base |
| 1968 - 1974 | GMC | C35/C3500 Pickup | Base |
| 1979 - 1986 | GMC | C3500 | High Sierra, Base, Sierra Classic |
| 1979 - 1982 | GMC | C3500 | Sierra Grande |
| 1988 - 1995 | GMC | C3500 | Sierra SLE |
| 1994 - 1995 | GMC | C3500 | Sierra SLT, Sierra SL |
| 1988 - 1993 | GMC | C3500 | Sierra, Sierra SLX |
| 1975 - 1976 | GMC | G25 | Rally, Vandura, Rally STX |
| 1976 | GMC | G35 | Magnavan, Vandura Special, Vandura, Rally, Rally Camper Special, Rally STX |
| 1974 | GMC | G35/G3500 Van | Base |
| 1973 - 1974 | GMC | G35/G3500 Van | Vandura, Rally |
| 1988 | GMC | G3500 | Rally Custom |
| 1988 - 1996 | GMC | G3500 | Rally, Rally Camper Special, Rally STX, Magnavan, Vandura, Vandura Special |
| 1973 - 1976 | GMC | Jimmy | Base |
| 1976 | GMC | Jimmy | Sierra Classic, Sierra Grande, High Sierra |
| 1976 | GMC | K15 | Base, Sierra Grande, High Sierra, Sierra Classic |
| 1968 - 1974 | GMC | K15/K1500 Pickup | Base |
| 1968 - 1974 | GMC | K15/K1500 Suburban | Base |
| 1979 - 1980 | GMC | K1500 | Base, Sierra Classic, Sierra Grande, High Sierra |
| 1976 - 1978 | GMC | K25 | Base, Sierra Grande, High Sierra, Sierra Classic |
| 1976 - 1977 | GMC | K25 Suburban | High Sierra, Sierra Grande, Sierra Classic, Base |
| 1968 - 1974 | GMC | K25/K2500 Pickup | Base |
| 1968 - 1974 | GMC | K25/K2500 Suburban | Base |
| 1991 - 1995 | GMC | K2500 | Sierra SLE |
| 1994 - 1995 | GMC | K2500 | Sierra SLT, Sierra SL |
| 1991 - 1993 | GMC | K2500 | Sierra SLX, Sierra |
| 1992 - 1995 | GMC | K2500 Suburban | Base, SLE |
| 1995 | GMC | K2500 Suburban | SLT |
| 1968 - 1974 | GMC | K35/K3500 Pickup | Base |
| 1979 - 1986 | GMC | K3500 | High Sierra, Sierra Classic, Base |
| 1979 - 1982 | GMC | K3500 | Sierra Grande |
| 1994 - 1995 | GMC | K3500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | K3500 | Sierra SLE |
| 1988 - 1993 | GMC | K3500 | Sierra, Sierra SLX |
| 1979 | GMC | P1500 | Base, Value Van |
| 1970 - 1971 | GMC | P25/P2500 Van | Base |
| 1975 - 1978 | GMC | P35 | Base, Value Van |
| 1970 - 1974 | GMC | P35/P3500 Van | Base |
| 1974 | GMC | P35/P3500 Van | Motorhome |
| 1979 - 1997 | GMC | P3500 | Base |
| 1979 - 1990 | GMC | P3500 | Value Van |
| 1987 - 1989 | GMC | R2500 | Base, Sierra Classic, High Sierra |
| 1987 - 1991 | GMC | R2500 Suburban | Base |
| 1987 | GMC | R2500 Suburban | High Sierra |
| 1987 - 1989 | GMC | R2500 Suburban | Sierra Classic |
| 1990 | GMC | R2500 Suburban | SLE |
| 1987 - 1991 | GMC | R3500 | Base |
| 1987 - 1989 | GMC | R3500 | High Sierra, Sierra Classic |
| 1990 - 1991 | GMC | R3500 | SLE |
| 1971 - 1975 | GMC | Sprint | Base |
| 1975 | GMC | Sprint | Classic, SP, High Sierra |
| 1972 - 1974 | GMC | Sprint | Custom |
| 1987 - 1991 | GMC | V3500 | Base |
| 1987 - 1989 | GMC | V3500 | Sierra Classic, High Sierra |
| 1990 - 1991 | GMC | V3500 | SLE |
| 1969 - 1974 | Iso | Grifo | Base |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Perfect fit for my Nissan 3.5hp outboard
runs better than ever
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 14, 2025
★★★★★ 5
Honda product and quality.
Do NOT understand why my lawnmower with a Honda engine did not come with a Honda carburetor. Replaced with this Honda carburetor and starts easily. The other carb only lasted 1.5 years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 6, 2021
★★★★★ 2
Worked but not well made. If you need 24 hour turnaround only option.
The housing is 95% identical. Float valve seat is smaller than mercury/quicksilver. The carb I received was stuck wide open. Had to completely pull it apart to fix the throttle. Then the choke didn’t work correctly. So I ended up putting this housing on with all my old mercury carb parts inside. All I needed was a new float valve but they are back ordered indefinitely. So this worked because the housing is correct but that’s about it. Internals were plastic. Not metal. Jury is still out on the jet size. I’ll update if it floods the motor at speed. Seems to be running very rich. If you’re looking for easy, I’d buy the quicksilver that’s tuned for the motor already. The carb I received idled too fast and even if the throttle wasn’t stuck open it wouldn’t have run well with a racing choke (screams air leak because of poor quality)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2024
★★★★★ 1
Throttle pin defective
This carb fits my tohatsu 3.5 hp but the throttle pin is defective. The only way to regulate it running wide open is to choke it out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2024
★★★★★ 5
Perfect fit for a 3.5 nissan
At a great price
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Reviewed in the United States on May 9, 2022