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Description
Chev 350 COMP Cams Xtreme Energy Camshaft 274/286 .490/.490 # CC12-246-3Chev 350 COMP Cams Xtreme Energy Camshaft 274 286 . 490 . 490 # CC12 246 3 "Camshaft, Hydraulic Flat Tappet, Advertised Duration 274 286, Lift . 490 . 490, Chevy, Small Block, Each Cam Style: Hydraulic flat tappet Camshaft Use: Street Strip Basic Operating RPM Range: 1,800 6,000 Intake Duration at 050 inch Lift: 230 Exhaust Duration at 050 inch Lift: 236 Duration at 050 inch Lift: 230 int. 236 exh. Advertised Intake Duration: 274 Advertised Exhaust
Chev 350 COMP Cams Xtreme Energy Camshaft 274/286 .490/.490 # CC12-246-3"Camshaft, Hydraulic Flat Tappet, Advertised Duration 274/286, Lift .490/.490, Chevy, Small Block, Each
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
1,800-6,000
Intake Duration at 050 inch Lift:
230
Exhaust Duration at 050 inch Lift:
236
Duration at 050 inch Lift:
230 int./236 exh.
Advertised Intake Duration:
274
Advertised Exhaust Duration:
286
Advertised Duration:
274 int./286 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.490 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.490 in.
Valve Lift with Factory Rocker Arm Ratio:
0.490 int./0.490 exh.
Lobe Separation (degrees):
110
Computer-Controlled Compatible:
No
Grind Number:
CS XE274H-10
Valve Springs Required:
Yes
Quantity:
Sold individually.
COMP Cams Xtreme Energy Camshafts
COMP Cams Xtreme Energy camshafts employ the latest cam technology to provide maximum performance. Whether your use is off-roading, towing, or street performance, there's an Xtreme Energy cam available for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturerswhile delivering increased engine vacuum. Hundreds of models are available for fitment on vehicles from 1955 to the present. Select the cam designed for your application.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.0 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 4
Not simple, nor easy
Model: SLH20025
I wanted to add sound proof material to the bare metal areas on the floor of my Toyota Tundra. The area behind the front seats had a haphazard application of sound deadening material. There were several complications to the project which may come up in other vehicles.
First is the floor covering which had plastic pillars underneath to support any weight on the cover. The sound deadening material had to be cut out so these pillars would rest on the bare metal of the floor. This required a lot of cutting with a utility knife and at times heavy scissors. The instructions say to make a template before cutting the material and I did this for the driver's side. This doubled the amount of time needed to install it. On the passenger's side I laid the rectangles of material with the backing on and pressed the floor covering onto the material. This showed where the support pillars were, which I then cut out.
Second is peeling the backing off the material. This can be very difficult as the adhesive sticks to it. The backing came off in multiple pieces and sometimes took 5 minutes for one piece. They say to wear gloves when handling the material but this is impossible when trying to get the backing off.
Third is pressing the material onto the metal. The instructions say to use a roller, but this was impossible for the irregular surface I was working on. The hand is the best tool to press the material on.
The material seems to be of high quality and I expect it will reduce the road noise in the cab.
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Reviewed in the United States on May 18, 2025
★★★★★ 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.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent sound deadening mats
Style: 80 mil 36 sqft, Style: 80 mil 36 sqft
Purchased these for a 2020 Lexus RX350 due to the hollow sound of the car doors when shutting. They sounded cheap. The mats are super sticky and I applied them when the doors were hot from sitting in the sun. They alubutyl sticks like crazy and the end result was perfect. Now I have solid sounding doors. Good quality product.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Awesome product 👌
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
I love this stuff. I use it alot.
Sticks great
Easy to use
Molds super easy
Really helps with sound. Great product.
I wish I could get sponsored for this product on my projects..
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Good product at a good price
Style: 80 mil 36 sqft
This product works great and easy to install.
I do two or more vehicles a month.
I switch to this brand a year ago and would recommend to everyone of my customers
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Reviewed in the United States on April 16, 2026