Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Pro-Plasma Nitrided Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6500

Name: Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Pro-Plasma Nitrided Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6500
Brand: COMP CAMS
SKU: 249-12-602-20
Price: 468.95 USD
Availability: InStock

^$468⁹⁵

Ships on 09/15/2026

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Chevy 262-400ci Small Block 1958-98

Pro-Plasma Nitrided

Lift

Duration

RPM Range

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

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.

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Part TypeCamshaft

BrandCOMP CAMS

Package Height2.75

Package Width3.0

Package Length24.5

Weight8.88 PG

Part CategoryPerformance Parts

UsageStreet/Strip

Intake Valve Lift0.5 in (12.7 mm)

Int. Duration Advertised (Deg)295

Exh. Duration @ .050 In. (Deg)257

Rpm Range2500-6400

Lifter TypeHydraulic Flat Tappet

Exh. Duration Advertised (Deg)313

Engine Make/SizeChevy Small Block (262-400)

Int. Duration @ .050 In. (Deg)243

Exhaust Valve Lift0.486 in (12.344 mm)

Vendor Part Number12-602-20

Package Qty1

Package TypeEA

No Questions

No Reviews

Some parts are not legal for use in California or other states with similar laws / regulations

Big Mutha" Thumpr Hydraulic Flat Tappet Camshaft Pro-Plasma Nitrided Lift .500"/.486" Duration 295/313 RPM Range 2500 to 6500

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