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COMP Cams Stage 2 Thumpr 227/237 Master Camshaft Kit GEN4 LS 4.8/5.3/6.0L

SKU: CCAMK54-703-11

Camshaft Kits

CCA Camshaft Kits...

COMP Cams Stage 2 Thumpr 227/237 Master Camshaft Kit GEN4 LS 4.8/5.3/6.0L

SKU: CCAMK54-703-11

Camshaft Kits

CCA Camshaft Kits...

A$3,368.97
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Description

Stg2 Tmpr MK 4.8-6.0

Additional Information

The Stage 2 Thumpr Master Cam Kit for LS GEN IV 5.3-6.0L provides an awesome idle lope in modified 5.3L & 6.0L trucks. Includes lifters, timing set, pushrods, dual springs, retainers, locks, spring seats and valve seals.

Application Summary

Chevrolet: Express Pasajeros 09 - 12 6 L Engine, Chevrolet: Avalanche 09 - 09 6 L Engine, Chevrolet: Express Cargo 09 - 09 5.3 L Engine, GMC: Sierra 1500 Classic 07 - 07 5.3 L Engine, Chevrolet: Express Pasajeros 09 - 12 5.3 L Engine, GMC: Sierra 3500 HD 09 - 12 6 L Engine, Chevrolet: Silverado 2500 07 - 12 4.8 L Engine, Chevrolet: Suburban 1500 07 - 12 5.3 L Engine, GMC: Yukon 07 - 12 5.3 L Engine, Chevrolet: Express 3500 09 - 12 6 L Engine, Hummer: H3 08 - 10 5.3 L Engine, Chevrolet: Trailblazer 07 - 08 5.3 L Engine, Chevrolet: Silverado 1500 07 - 12 5.3 L Engine, Chevrolet: Express 2500 09 - 12 6 L Engine, Chevrolet: Avalanche 07 - 12 5.3 L Engine, Chevrolet: Silverado 1500 Classic 07 - 07 5.3 L Engine, GMC: Sierra 2500 HD 09 - 12 6 L Engine, Chevrolet: Express Cargo 10 - 12 6 L Engine, Chevrolet: Silverado 2500 07 - 12 5.3 L Engine, GMC: Yukon XL 2500 09 - 12 6 L Engine, GMC: Sierra 1500 07 - 12 5.3 L Engine, GMC: Savana 3500 09 - 12 6 L Engine, GMC: Canyon 09 - 12 5.3 L Engine, Chevrolet: Tahoe 09 - 12 6 L Engine, GMC: Savana 3500 07 - 12 4.8 L Engine, Saab: 9-7x 09 - 09 6 L Engine, GMC: Yukon 09 - 12 6 L Engine, Saab: 9-7x 07 - 09 5.3 L Engine, GMC: Sierra 1500 07 - 12 4.8 L Engine, Chevrolet: Silverado 1500 07 - 12 4.8 L Engine, Chevrolet: Express 3500 07 - 12 4.8 L Engine, Chevrolet: Silverado 3500 09 - 12 6 L Engine, GMC: Yukon XL 1500 07 - 12 5.3 L Engine, GMC: Envoy 07 - 09 5.3 L Engine, Chevrolet: Silverado 1500 09 - 12 6 L Engine, Chevrolet: Tahoe 07 - 12 5.3 L Engine, Cadillac: Escalade 09 - 12 6 L Engine, GMC: Sierra 1500 09 - 12 6 L Engine, GMC: Sierra 1500 Classic 07 - 07 4.8 L Engine, Chevrolet: Silverado 1500 Classic 07 - 07 4.8 L Engine, Chevrolet: Cheyenne 07 - 12 5.3 L Engine, GMC: Yukon XL 1500 09 - 09 6 L Engine, GMC: Savana 2500 07 - 12 4.8 L Engine, Hummer: H3T 09 - 10 5.3 L Engine, Buick: Rainier 07 - 07 5.3 L Engine, GMC: Yukon 07 - 09 4.8 L Engine, Chevrolet: Colorado 09 - 12 5.3 L Engine, Chevrolet: Express 2500 07 - 12 4.8 L Engine, Ch

Part Type

Engine Camshaft Kit

Product Overview

Chevrolet: Express Pasajeros 09 - 12 6 L Engine, Chevrolet: Avalanche 09 - 09 6 L Engine, Chevrolet: Express Cargo 09 - 09 5.3 L Engine, GMC: Sierra 1500 Classic 07 - 07 5.3 L Engine, Chevrolet: Express Pasajeros 09 - 12 5.3 L Engine, GMC: Sierra 3500 HD 09 - 12 6 L Engine, Chevrolet: Silverado 2500 07 - 12 4.8 L Engine, Chevrolet: Suburban 1500 07 - 12 5.3 L Engine, GMC: Yukon 07 - 12 5.3 L Engine, Chevrolet: Express 3500 09 - 12 6 L Engine, Hummer: H3 08 - 10 5.3 L Engine, Chevrolet: Trailblazer 07 - 08 5.3 L Engine, Chevrolet: Silverado 1500 07 - 12 5.3 L Engine, Chevrolet: Express 2500 09 - 12 6 L Engine, Chevrolet: Avalanche 07 - 12 5.3 L Engine, Chevrolet: Silverado 1500 Classic 07 - 07 5.3 L Engine, GMC: Sierra 2500 HD 09 - 12 6 L Engine, Chevrolet: Express Cargo 10 - 12 6 L Engine, Chevrolet: Silverado 2500 07 - 12 5.3 L Engine, GMC: Yukon XL 2500 09 - 12 6 L Engine, GMC: Sierra 1500 07 - 12 5.3 L Engine, GMC: Savana 3500 09 - 12 6 L Engine, GMC: Canyon 09 - 12 5.3 L Engine, Chevrolet: Tahoe 09 - 12 6 L Engine, GMC: Savana 3500 07 - 12 4.8 L Engine, Saab: 9-7x 09 - 09 6 L Engine, GMC: Yukon 09 - 12 6 L Engine, Saab: 9-7x 07 - 09 5.3 L Engine, GMC: Sierra 1500 07 - 12 4.8 L Engine, Chevrolet: Silverado 1500 07 - 12 4.8 L Engine, Chevrolet: Express 3500 07 - 12 4.8 L Engine, Chevrolet: Silverado 3500 09 - 12 6 L Engine, GMC: Yukon XL 1500 07 - 12 5.3 L Engine, GMC: Envoy 07 - 09 5.3 L Engine, Chevrolet: Silverado 1500 09 - 12 6 L Engine, Chevrolet: Tahoe 07 - 12 5.3 L Engine, Cadillac: Escalade 09 - 12 6 L Engine, GMC: Sierra 1500 09 - 12 6 L Engine, GMC: Sierra 1500 Classic 07 - 07 4.8 L Engine, Chevrolet: Silverado 1500 Classic 07 - 07 4.8 L Engine, Chevrolet: Cheyenne 07 - 12 5.3 L Engine, GMC: Yukon XL 1500 09 - 09 6 L Engine, GMC: Savana 2500 07 - 12 4.8 L Engine, Hummer: H3T 09 - 10 5.3 L Engine, Buick: Rainier 07 - 07 5.3 L Engine, GMC: Yukon 07 - 09 4.8 L Engine, Chevrolet: Colorado 09 - 12 5.3 L Engine, Chevrolet: Express 2500 07 - 12 4.8 L Engine, Ch

Data: v4.2 - Upd: 2026-11-07 21:15:05

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Advertised Exhaust Duration:299
Advertised Intake Duration:282
Amazon ASIN:B07MQB7F54
Assembly Lubricant Included:No
Basic Operating RPM Range:1,800-6,600
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?:Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?:Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?:No
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?:Yes, but must be a race/competition only vehicle.
Cam Type:Hydraulic Roller
Camshaft Gear Attachment:3-Bolt
Camshaft Material:Billet Steel
Camshaft Series:Thumpr NSR (No Springs Required)
Description:Stage 2 Thumpr Master Cam Kit for GEN IV LS 4.8/5.3/6.0L Trucks
Engine Family:GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)
Estimated Horsepower Gain with Kit:89
Exhaust Duration at .050 inch Lift:237
Exhaust Valve Lift:0.612
Gaskets Included:No
Grind Number:282LTH13
Intake Duration at .050 Inch Lift:227
Intake Valve Lift:0.614
Kit Type:MK-Kit
Lifter Type:Hydraulic Roller
Lifters Included:Yes
Locks Included:Yes
Part Number:ccaMK54-703-11
Pushrods Included:Yes
Recommended Cam Install Kit:5621
Recommended Max-Lift BSR Shaft Rocker System:1981-16
Recommended Upgraded Stock Rocker Arms:1477-16
Retainers Included:Yes
Stage:2
Timing Set Included:Yes
Title:Stage 2 Thumpr Master Cam Kit for GEN IV LS 4.8/5.3/6.0L Trucks
Usage:Street / Performance
Valve Seals Included:Yes
Valve Spring Seats Included:Yes
Valve Springs Included:Yes

Product Downloads

# Document Type Download
1. Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:12:31

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Comp Cams, Comp Cams (edelbrock)
StreetFX SKU ccaMK54-703-11
SFX Item ID 4124798
Accounting SKU cca-MK54-703-11
Manufacturer SKU MK54-703-11
Manufacturer UPC 036584387657
Alternative References CCA-MK54-703-11, CPCMK54-703-11, MK54-703-11

Camshaft Kits, Thumpr LS Master Camshaft Packages, Hydraulic Roller, Advertised Duration 282/299, Lift 0.614/0.612, Chevy, GMC, 4.8L, 5.3L, 6.0L, Kit

COMP Cams Thumpr LS Master camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valve train component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. These packages can add anywhere from 60 to 110 hp (depending on the application).

COMP Cams Thumpr LS Master camshaft packages include:
• Thumpr LS camshaft
• Lifters
• Timing gear set
• Pushrods
• Valve springs
• Retainers
• Valve locks
• Spring seats
• Valve seats

Product Attributes
BrandCOMP Cams
Manufacturer's Part NumberMK54-703-11
Part TypeCamshaft Kits
Product LineCOMP Cams Thumpr LS Master Camshaft Packages
UPC00036584387657
Cam StyleHydraulic roller, OE roller
Basic Operating RPM Range1,800-6,500
Camshaft UseStreet/Strip
Camshaft Manufacturers DescriptionThumpr lobe design for awesome idle lope in modified 5.3L & 6.0L truck engines. Required high lift valve springs ensure maximum power gains. AFM & VVT delete.
Intake Duration at 050 inch Lift227
Exhaust Duration at 050 inch Lift237
Duration at 050 inch Lift227 int./237 exh.
Advertised Intake Duration282
Advertised Exhaust Duration299
Advertised Duration282 int./299 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.614 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.612 in.
Valve Lift with Factory Rocker Arm Ratio0.614 int./0.612 exh.
Camshaft Gear Attachment3-bolt
Computer-Controlled CompatibleYes
Lifters IncludedYes
Lifter StyleHydraulic roller
Valve Springs IncludedYes
Outside Diameter of Outer Spring (in.)1.320 in.
Retainers IncludedYes
Locks IncludedYes
Valve Stem Seals IncludedYes
Timing Chain and Gears IncludedYes
Timing Chain StyleDouble roller
Assembly Lubricant IncludedNo
Pushrods IncludedYes
Rocker Arms IncludedNo
Gaskets IncludedNo
Valve Springs RequiredNo
QuantitySold as a kit.

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