SKU: 40990312137

COMP Cams Camshaft Kit CB 305H SK11-214-4

Sale price$206.06 Regular price$228.96
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Description

COMP Cams Camshaft Kit CB 305H SK11-214-4COMP Cams Camshafts SK11 214 4 CamShaft Kit, CB 305H Limited street use or bracket racing. 10. 5: 1+ compression, 3500+ stall or 4 speed. 4. 10 or lower gears. Radical Idle. COMP Cams Camshaft Kit CB 305H 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 Custom Deluxe,

COMP Cams Camshafts SK11-214-4 CamShaft Kit, CB 305H Limited street use or bracket racing. 10.5:1+ compression, 3500+ stall or 4 speed. 4.10 or lower gears. Radical Idle. COMP Cams Camshaft Kit CB 305H

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 Custom Deluxe, Scottsdale, Custom, Cheyenne, Silverado
1968 - 1974 Chevrolet C10 Pickup Base
1968 - 1974 Chevrolet C10 Suburban Base
1975 - 1980 Chevrolet C10 Suburban Scottsdale, Custom Deluxe, Silverado
1990 - 1993 Chevrolet C1500 454 SS, Silverado, Cheyenne, WT
1990 - 1991 Chevrolet C1500 Base
1990 - 1992 Chevrolet C1500 Scottsdale
1986 Chevrolet C20 Base
1975 - 1986 Chevrolet C20 Cheyenne, Silverado, Scottsdale
1981 - 1986 Chevrolet C20 Custom
1975 - 1980 Chevrolet C20 Custom Deluxe
1981 Chevrolet C20 Deluxe
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 LS, LT
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 Silverado, Scottsdale
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 RS, Base, SS, 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
1967 - 1972 Chevrolet Chevelle Concours
1969 - 1972 Chevrolet Chevelle Concours Estate, Greenbrier
1965 - 1973 Chevrolet Chevelle Deluxe
1968 - 1972 Chevrolet Chevelle Nomad, Malibu
1965 - 1972 Chevrolet Chevelle SS, Base
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 Base, Sportvan
1976 Chevrolet G20 Sportvan, Chevy Van, Beauville
1973 - 1974 Chevrolet G20 Van Sportvan, Base
1975 - 1996 Chevrolet G30 Chevy Van, Sportvan, Beauville, Hi-Cube
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 Custom Deluxe, Silverado, Scottsdale, Cheyenne
1968 - 1974 Chevrolet K10 Pickup Base
1968 - 1974 Chevrolet K10 Suburban Base
1976 - 1980 Chevrolet K20 Scottsdale, Cheyenne, Custom Deluxe, Silverado
1968 - 1974 Chevrolet K20 Pickup Base
1968 - 1974 Chevrolet K20 Suburban Base
1985 Chevrolet K20 Suburban Scottsdale, Custom, Silverado
1994 - 1995 Chevrolet K2500 Base, WT
1991 - 1992 Chevrolet K2500 Scottsdale
1991 - 1995 Chevrolet K2500 Silverado, Cheyenne
1992 - 1995 Chevrolet K2500 Suburban Base
1995 Chevrolet K2500 Suburban LS, LT
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 Estate, Base
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 Silverado, Scottsdale, Custom Deluxe
1987 Chevrolet R20 Suburban Custom Deluxe
1987 - 1988 Chevrolet R20 Suburban Silverado, Scottsdale
1989 Chevrolet R2500 Scottsdale, Cheyenne, Silverado
1989 - 1991 Chevrolet R2500 Suburban Scottsdale, Silverado
1988 Chevrolet R30 Cheyenne
1987 - 1988 Chevrolet R30 Silverado, Custom Deluxe, Scottsdale
1989 - 1990 Chevrolet R3500 Scottsdale
1989 - 1991 Chevrolet R3500 Silverado, Cheyenne
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 Scottsdale, Custom Deluxe, Silverado
1989 - 1990 Chevrolet V3500 Scottsdale
1989 - 1991 Chevrolet V3500 Silverado, Cheyenne
1972 - 1979 Excalibur Phaeton Base
1977 - 1978 GMC C15 Heavy Half
1975 - 1978 GMC C15 High Sierra, Base, Sierra Classic, Sierra Grande
1977 GMC C15 Indy Hauler
1978 GMC C15 Street Coupe
1975 - 1978 GMC C15 Suburban Sierra Classic, Base, Sierra Grande, High Sierra
1968 - 1974 GMC C15/C1500 Pickup Base
1968 - 1974 GMC C15/C1500 Suburban Base
1979 - 1980 GMC C1500 High Sierra, Sierra Classic, Street Coupe, Sierra Grande, Heavy Half, Base
1979 - 1980 GMC C1500 Suburban High Sierra, Sierra Classic, Base, Sierra Grande
1975 - 1978 GMC C25 High Sierra, Sierra Grande, Sierra Classic, Base
1975 - 1978 GMC C25 Suburban Sierra Classic, Sierra Grande, High Sierra, Base
1968 - 1974 GMC C25/C2500 Pickup Base
1968 - 1974 GMC C25/C2500 Suburban Base
1979 - 1986 GMC C2500 Base, Sierra Classic, High Sierra
1979 - 1982 GMC C2500 Sierra Grande
1994 - 1996 GMC C2500 Sierra SL, Sierra SLT
1991 - 1996 GMC C2500 Sierra SLE
1991 - 1993 GMC C2500 Sierra, Sierra SLX
1979 - 1995 GMC C2500 Suburban Base
1979 - 1986 GMC C2500 Suburban Sierra Classic, High Sierra
1979 - 1982 GMC C2500 Suburban Sierra Grande
1992 - 1995 GMC C2500 Suburban SLE
1995 GMC C2500 Suburban SLT
1975 - 1978 GMC C35 High Sierra, Sierra Classic, Sierra Grande, Base
1968 - 1974 GMC C35/C3500 Pickup Base
1979 - 1986 GMC C3500 Sierra Classic, Base, High Sierra
1979 - 1982 GMC C3500 Sierra Grande
1994 - 1995 GMC C3500 Sierra SL, Sierra SLT
1988 - 1995 GMC C3500 Sierra SLE
1988 - 1993 GMC C3500 Sierra, Sierra SLX
1975 - 1976 GMC G25 Rally STX, Vandura, Rally
1976 GMC G35 Magnavan, Vandura Special, Rally STX, Rally, Vandura, Rally Camper Special
1974 GMC G35/G3500 Van Base
1973 - 1974 GMC G35/G3500 Van Rally, Vandura
1988 GMC G3500 Rally Custom
1988 - 1996 GMC G3500 Rally, Rally STX, Rally Camper Special, Vandura Special, Magnavan, Vandura
1973 - 1976 GMC Jimmy Base
1976 GMC Jimmy Sierra Classic, Sierra Grande, High Sierra
1976 GMC K15 Sierra Grande, Sierra Classic, High Sierra, Base
1968 - 1974 GMC K15/K1500 Pickup Base
1968 - 1974 GMC K15/K1500 Suburban Base
1979 - 1980 GMC K1500 Sierra Grande, High Sierra, Sierra Classic, Base
1976 - 1978 GMC K25 Base, Sierra Classic, High Sierra, Sierra Grande
1976 - 1977 GMC K25 Suburban Base, Sierra Grande, Sierra Classic, High Sierra
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 SLE, Base
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 SLX, Sierra
1979 GMC P1500 Value Van, Base
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
1972 - 1974 GMC Sprint Custom
1975 GMC Sprint High Sierra, SP, Classic
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:
  1. 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
SKU: 40990312137

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4.6 ★★★★★
Based on 7 reviews
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Product Reviews
D
Verified Purchase
David Spencer
Whiting, US
★★★★★ 5
Good stuff
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Good stuff, easy to use, self adhesive backing contours around curves easily and works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
S
Verified Purchase
stookie778
Boise, US
★★★★★ 5
Works amazingly, but only if you install it correctly.
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
If you purchasing Siless Liner 157 mil (4 mm) Sound Deadening mat, to block unwanted sounds in your car, this is what you need to buy. But wait! It's not the only thing you need to buy if you want to "actually" deaden sound. By itself, it will definitely block a noticeable amount of sound, and, most likely, that's all you realistically need. But... But... If you want the Siless Liner Sound Deadening Mat to really help you take it up a few notches, to get the best sound almost bordering on soundproofing, listen up. You will have to install traditional butyl rubber first. Doesn't have to be the Siless brand, but I'm sure they would love to sell both to you, I used both Killmat (80mil) and Noico (50mil). I have a Honda S2000. It's a two-seater convertible sports car if you don't know what this car is, and it's loud when I'm driving above 60mph. I also happen to have a sound system installed as well. Other than that, the car is stock. I first installed the butyl rubber on the car's interior sheet metal. I went all out and covered everything I could. I didn't need to but I wanted to. I was extremely impressed with the results. But I wanted to go further. Not because I needed to but because just wanted to see what it would be like. So I bought Siless Liner 157 mil (4 mm) 36sqft Sound Deadening mat to go on top of the butyl rubber mats. I put this over every area I installed the butyl rubber. I had to be careful of clearance issues since I added a significant amount of underlayment, and you should too. If you put butyl rubber sound-deadening materials in 50% of the total interior area, you'll hear a noticeable improvement. If you put butyl in about 80% of the total area, you'll be even more amazed at the improvement, compared to before. I originally did all the above myself, so that's my experience and so your mileage may vary. I then installed the Siless Liner Sound Deadening mat over every place I could even going further than I could with the butyl rubber. I used the Siles Liner in areas where butyl rubber would not have been effective, such as the roll bar hoop area and large empty cavities or holes. I covered everything I could, firewall, doors, floor pan, transmission tunnel, trunk, trunk lid, fuel tank area, rear quarter panels, and rear-wheel tunnels, in Siless Liner Sound Deadening Mat. WOW!! The Siless Liner Sound Deadening Mat was the icing on the cake! Let's not forget, this car is a convertible sports car so it will never be a quiet ride, ever. But I can now actually have a conversation with a passenger at a normal-ish volume! This also means I can now have a normal hands-free phone call without having to plug one ear to block out the noise! My sound system sounds so much better! Just by going through the install process, I looked for any vibration, rattle, squeak, and noise-prone areas to either eliminate or reduce unwanted noise production. If you forget this step, the inside and outside of your car will rattle and buzz. I skipped this step the first time around. But did it right before I installed more butyl rubber and the improvement was impressive, especially inside the car. Outside the car, I didn't notice a difference until I put the last layer of Siless Liner Sound Deadening Mat. The sound deadening mat works both ways from what I can tell. If I turned up my music, as loud as I occasionally do, parked in the attached garage to the house, with the garage door closed, I would be barely able to tell the car was playing music in the garage. It sounds like it is another car, just a little bit down the street, with a very loud base. If you stand 20 feet away outside the car, the sound system is noticeable, but not obnoxious by a long shot. Get a 3 piece wood/metal roller set as well, which makes quick work of large areas.
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Reviewed in the United States on December 23, 2021
L
Verified Purchase
Ligia
Pawtucket, US
★★★★★ 5
Better than Kilmat
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Great adhesion, and you can immediately see the sound difference when you rap the area and compared it to another area without it. Also, very easy to cut and apply. Once on, you may not be able to peel it and reposition it, so be sure where you want it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
J
Verified Purchase
J M.
Grantham, US
★★★★★ 3
Not much noise reduction…
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Easy to install but did not provide much sound dampening…
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Reviewed in the United States on April 28, 2026
M
Verified Purchase
Mike
Fort Morgan, US
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2025

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