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

Dyno Results

Camshaft Part #12-408-8Grind #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 / 3312Intake Centerline:106°
Engine Type:Chevrolet 350 Small Block
Bore:4.040"Stroke:3.480"
Displacement:356ciCompression:9.25:1
Heads:Dart S/RIntake:Edelbrock Performer
Carburetor:Holley #3310 Vac. Sec.Exhaust:1 5/8" Headers
Max Torque:413 ft*lbs @ 3700 RPMMax 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
Lifter Kit: 15853-16  /   853-16
Push Rods: 7809-16
Rocker Arms: 1412-16
SK-Kit Upgrade: SK12-408-8
Steel Retainers: 787-16  /   742-16
Timing Set: 2100  /   7100
Valve Locks: 648-16  /   601-16
Valve Seals: 501-16  /   503-16
Valve Springs: 26981-16  /   981-16