Made in USA
Xtreme Energy Mechanical Flat Camshaft Lift: .520"/.540"
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-12-678-4

Xtreme Energy Mechanical Flat Camshaft Lift: .520"/.540"

$30995
1 left in stock
ShippingShips Today
Lowest PriceLowest Price Guarantee

Chevy Small Block 265-400ci 1955-98
    Xtreme Energy Mechanical Flat Camshaft
  • Lift: .520"/.540"
  • Duration: 282°/290°
  • Lobe Separation Angle: 110°
  • RPM Range 2400-6800

  • Produces Better Throttle Response
  • Produces Top Engine Horsepower
  • Delivers Increased Engine Vacuum
  • 1 Year Limited Warranty

    265, 283, 307, 302, 305, 327, 350, 383, 400, 427, L46, L48, L65, LM1, LT-1, L82, L81, LS9, L83, L98, L05, LG3, LG4, LT1, LT4, Camaro, Corvette, Chevelle, Stingray, Silverado, C10, Firebird, Chevrolet, Chevy, Small Block Chevy, Caprice, Malibu, Impala, Nova, 355, GEN1, Monte Carlo, S10


    Street/strip, 2800+ stall, likes headers and gears, rough idle.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeCamshaft
BrandCOMP CAMS
Package Height2.75
Package Width3.0
Package Length24.5
Weight8.7 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)252
Cam StyleMechanical flat tappet
Grind NumberCS XS282S-10
Exh. Duration Advertised (Deg)290
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.52
Int. Duration @ .050 In. (Deg)244
Basic Operating Rpm Range2,400-6,800
Intake Valve Lash0.016 in (0.406 mm)
Intake Valve Lift0.52 in (13.208 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)282
Lobe Separation (Deg)110
Rpm Range2400-6800
Advertised Duration282 int./290 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.54
UsageStreet/Performance
Valve Lift With Factory Rocker Arm Ratio0.520 int./0.540 exh.
QuantitySold individually
Exhaust Valve Lash0.016 in (0.406 mm)
Exhaust Valve Lift0.54 in (13.716 mm)
Advertised Intake Duration282
Intake Duration At 050 Inch Lift244
Exhaust Duration At 050 Inch Lift252
Advertised Exhaust Duration290
Lifter TypeMechanical Flat Tappet
Duration At 050 Inch Lift244 int./252 exh.
Valve Springs RequiredYes
Vendor Part Number12-678-4
Package Qty1
Package TypeEA
No Questions
No Reviews

Items You Need

Engine Assembly Lube [4 oz. Bottle]

JEGS

Engine Assembly Lube [4 oz. Bottle]

Part Number : 555-28000
$589$6.99
You Save$1.10
Break-In/Engine Oil Supplement [12 oz. Bottle]

JEGS

Break-In/Engine Oil Supplement [12 oz. Bottle]

Part Number : 555-28060
$1009$11.99
You Save$1.90
Valve Spring Compressor [Stud Mount]

JEGS

Valve Spring Compressor [Stud Mount]

Part Number : 555-80518
$919$9.99
You Save$0.80
Valve Spring Compressor [Stud Mount]

JEGS

Valve Spring Compressor [Stud Mount]

Part Number : 555-80521
$5299$57.19
You Save$4.20
Valvetrain Checking Springs Light tension springs

JEGS

Valvetrain Checking Springs Light tension springs

Part Number : 555-80523
$839$8.99
You Save$0.60
Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters

JEGS

Universal Camshaft Installation/Removal Tool Includes 4 camshaft adapters

Part Number : 555-80599
$4779$51.99
You Save$4.20
Precision Cam Degree Wheel Kit [11 in.]

JEGS

Precision Cam Degree Wheel Kit [11 in.]

Part Number : 555-81621
$14699$161.99
You Save$15.00
Magnum Roller Rocker Arms Chevy Small Block 265-400

COMP CAMS

Magnum Roller Rocker Arms Chevy Small Block 265-400

Part Number : 249-1412-16
$22795
159 Engine Break-In Oil Additive [12-Ounce]

COMP CAMS

159 Engine Break-In Oil Additive [12-Ounce]

Part Number : 249-159
$2395
Positive Stop PTFE Seals Guide Size: .530"

COMP CAMS

Positive Stop PTFE Seals Guide Size: .530"

Part Number : 249-503-16
$3595

ITEM YOU MAY ALSO CONSIDER

1955 - 1998 CHEVROLET 262

HOWARDS CAMS

1955 - 1998 CHEVROLET 262

Part Number : 466-110822-06
$24599
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning
Your Cart

Your shopping cart is empty!