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Xtreme Energy 206/212 Hydraulic Roller Cam for Chevrolet Small Block
Xtreme Energy 206/212 Retro-Fit Hydraulic Roller Cam for Chevy Small Block stock to mildly modified combinations. Strong torque and good mileage.
In stock
SKU
12-408-8
$522.95
Xtreme Energy™ 206/212 Hydraulic Roller Cam for Chevy Small Block. Very strong torque with excellent mileage and a smooth idle. Xtreme Energy Cams™ bridge the gap between Magnum street cams and race only cams. Xtreme Energy Cams™ provide increased torque, vacuum, response, and power while still providing quiet operation of the valve train and the durability required in daily driven vehicles.
Xtreme Energy™
Benefits:
- Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
- More vacuum allows a step up in duration for greater performance
- Best seller; excellent all around performance in street carbureted applications
Important Considerations:
- Work best with COMP Cams® roller rockers and matched valve springs
- Require other performance parts (intake manifold, headers, etc.) for best performance
Camshaft Part # | 12-408-8 | Grind # | XR258HR-10 | ||||||||||||||||||||||||||||||||||||||||||||
Duration @ 0.006": | 258° / 264° | Duration @ 0.050": | 206° / 212° | ||||||||||||||||||||||||||||||||||||||||||||
Max Lift w/ 1.5RR: | .480" / .487" | Lobe Separation: | 110° | ||||||||||||||||||||||||||||||||||||||||||||
Lobe ID#'s: | 3311 / 3312 | Intake Centerline: | 106° | ||||||||||||||||||||||||||||||||||||||||||||
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: | 413 ft*lbs @ 3700 RPM | Max Power: | 325 HP @ 4400 RPM | ||||||||||||||||||||||||||||||||||||||||||||
Manifold Vacuum: | 17" Hg @ 800 RPM & 18" Hg @ 1000 RPM w/ no load. | ||||||||||||||||||||||||||||||||||||||||||||||
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range: 1,000-5,000
Grind Number: XR258HR
Cam Type: Hydraulic Roller
Lifter Style: Hydraulic Roller
Camshaft Series: Xtreme Energy
Usage: Street/Performance
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration: 258
Advertised Exhaust Duration: 264
Intake Duration at .050 Inch Lift: 206
Exhaust Duration at .050 Inch Lift: 212
Intake Valve Lift: 0.48
Exhaust Valve Lift: 0.487
Lobe Separation: 110
Exhaust Close ATDC: 18
Intake Open BTDC: 23
Exhaust Open BBDC: 66
Intake Close ABDC: 55
Camshaft Gear Attachment: 3-Bolt
Note
Description
1010
4646
Component
Part Number
Break-In Lube: 159
CL-Kit Upgrade: CL12-408-8
Distributor Gears: 12200
K-Kit Upgrade: K12-408-8
Push Rods: 7809-16
Rocker Arms: 1412-16
SK-Kit Upgrade: SK12-408-8