Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6400
InfoVehicle Info Needed
COMP CAMSPART NUMBER: 249-12-602-4

Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6400

$30995
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Chevy 262-400ci Small Block 1958-98
    Big Mutha' Thumpr Hydraulic Flat Tappet Camshaft
    Lift .500"/.486"
    Duration 295/313
    RPM Range 2500 to 6400

  • 3 Grinds To Fit All Of Your Performance Needs
  • Unique Design
  • Maximizes Sound And Mid To High RPM Power
  • Ensures Safe Piston-To-Valve Clearance
  • Proven To Generate 25+ RWHP Gains
  • Does Not Compromise Durability
  • 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, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very 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 Height2.7
Package Width2.9
Package Length24.3
Weight9.0 PG
Part CategoryPerformance Parts
Exh. Duration @ .050 In. (Deg)257
Cam StyleHydraulic flat tappet
Grind Number295TH7
Exh. Duration Advertised (Deg)313
Engine Make/SizeChevy Small Block (262-400)
Intake Valve Lift With Factory Rocker Arm Ratio (I0.5
Int. Duration @ .050 In. (Deg)243
Basic Operating Rpm Range2,500-6,400
Intake Valve Lift0.5 in (12.7 mm)
Computer-Controlled CompatibleNo
Int. Duration Advertised (Deg)295
Lobe Separation (Deg)107
Rpm Range2500-6400
Advertised Duration295 int./313 exh.
Exhaust Valve Lift With Factory Rocker Arm Ratio (0.486
UsageStreet/Strip
Valve Lift With Factory Rocker Arm Ratio0.500 int./0.486 exh.
QuantitySold individually
Exhaust Valve Lift0.486 in (12.344 mm)
Advertised Intake Duration295
Intake Duration At 050 Inch Lift243
Exhaust Duration At 050 Inch Lift257
Advertised Exhaust Duration313
Lifter TypeHydraulic Flat Tappet
Part FitmentSemi Universal
Duration At 050 Inch Lift243 int./257 exh.
Valve Springs RequiredYes
Vendor Part Number12-602-4
Package Qty1
Package TypeEA
No Questions
No Reviews

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