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Xtreme Energy 250/256 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block

Xtreme Energy 250/256 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block

Xtreme Energy Computer Control 212/218 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block

Xtreme Energy Computer Control 212/218 Hydraulic Flat Cam and Lifter Kit Chevrolet Small Block

Xtreme Energy 250/256 Hydraulic Flat Cam for Chevrolet Small Block

was $239.95 Special Price $191.96
Xtreme Energy™ 250/256 Hydraulic Flat Tappet Cam for Chevy Small Block Pro Street/bracket racing. Needs good intake, headers, gear and a 3300+ stall.
In stock
SKU
12-254-3
Xtreme Energy™ 250/256 Hydraulic Flat Tappet 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 #12-254-3Grind #XE294H-10
Duration @ 0.006":294° / 306Duration @ 0.050":250° / 256°
Max Lift w/ 1.5RR: .519" / .523"Lobe Separation:110°
Lobe ID#'s:5449 / 5231Intake Centerline:106°
Engine Type:Chevrolet 350 Small Block
Bore:4.040"Stroke:3.480"
Displacement:356ciCompression:9.25:1
Heads:Dart Sportsman IIIntake:Edelbrock Victor Jr.
Carburetor:Holley 750 dbl. pmp.Exhaust:1 3/4" Headers
Max Torque:394 ft*lbs @ 4100 RPMMax Power:415 HP @ 5800 RPM
Manifold Vacuum:8" Hg @ 1000 RPM & 10.5" Hg @ 1200 RPM w/ no load.
More Information
UPC 036584023562
Manufacturer COMP Cams®
Emissions Code
Engine Family Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
RPM Operating Range 2,800-7000
Cam Type Hydraulic Flat Tappet
Camshaft Series Xtreme Energy
Camshaft Gear Attachment 3-Bolt
Usage Street/Performance
California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration 294
Advertised Exhaust Duration 306
Intake Duration at .050 Inch Lift 250
Exhaust Duration at .050 Inch Lift 256
Intake Valve Lift 0.519
Exhaust Valve Lift 0.523
Lobe Lift Intake 0.346
Lobe Lift Exhaust 0.349
Lobe Separation 110
Intake Centerline 106
Valve Timing Lift 0.006
Exhaust Close ATDC 41
Intake Open BTDC 39
Exhaust Open BBDC 84
Intake Close ABDC 74
Lifter Style Hydraulic Flat Tappet
Make Chevrolet
Recommended Components
Component Part Number
Break-In Lube 159
Valve Seals 503-16
Valve Locks 611-16
Steel Retainers 740-16
Valve Springs 986-16
Valve Springs 26986-16
Valve Locks 614-16
Steel Retainers 795-16
Push Rods 7812-16
Lifter Kit 812-16
Lifter Kit 858-16
Timing Set 2100
Rocker Arms 1412-16
Timing Set 3100
RP Rocker Push Rod Kit RP1412-16
RP Rocker Push Rod Kit RPM1601-16
CL-Kit Upgrade CL12-254-3
K-Kit Upgrade K12-254-3
SK-Kit Upgrade SK12-254-3