Father’s Day Sale – Up to 40% Off! Shop Now >

Comp Cams Big Mutha Thumpr 243/257 Hydraulic Flat Camshaft K-Kit (94-02 5.2L, 5.9L V8 RAM 2500)Find parts that fit my vehicle

Item HR48274
Our Price

$694.95 kit

Military, Medical & First Responders $34.75 Available in AT Cash Rewards.
Confirm Eligibility

CONFIRM THIS FITS YOUR VEHICLE!

Select a different vehicle Help?
Update or Change Vehicle
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Shop Owners Save More! Sign up for our dealer program

      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • Big Mutha' Thumpr 243/257 Hydraulic Flat Cam K-Kit For Chrysler 273-360
      • Street/Strip Use; Requires 9.5:1 Compression, 2800+ Stall, Intake, Gears, and Headers; Produces a Very Rough Idle
      • 12-Month Warranty Included
      • Engine Family: Chrysler 273-360 C.I. 8 Cylinder (1964-2002)
      • RPM Operating Range: 2,500-6,400
      • Cam Type: Hydraulic Flat Tappet
      • Camshaft Series: Thumpr
      • Advertised Intake Duration: 295 Degrees
      • Advertised Exhaust Duration: 313 Degrees
      • Intake Duration at .050 Inch Lift: 243 Degrees
      • Exhaust Duration at .050 Inch Lift: 257 Degrees
      • Intake Valve Lift: 0.507 Inches
      • Exhaust Valve Lift: 0.494 Inches
      • Lobe Separation Angle: 107 Degrees
      • Fits 1994-2002 5.2L and 5.9L V8 RAM 2500 Engines

      Description

      High-Performance Camshaft. The Comp Cams Big Mutha Thumpr 243/257 Hydraulic Flat Camshaft K-Kit delivers enhanced valve timing for Chrysler 273-360 engines, optimizing power and torque for street and strip applications. It is designed to operate efficiently between 2,500 and 6,400 RPM, providing aggressive throttle response and performance suited for vehicles requiring a rough idle and supporting 9.5:1 compression, 2800+ stall, and aftermarket intake, gears, and headers.

      Construction and Appearance. Manufactured with durable materials tailored for hydraulic flat tappet camshafts, this camshaft features precision-ground lobes and a flat tappet design engineered for reliable operation. The kit’s finish is designed for durability, ensuring longevity under high-stress street and strip conditions.

      Installation. Installation requires moderate mechanical skill. This camshaft is a direct replacement for specified Chrysler engines and fits into existing lifter bores, maintaining compatibility with stock components where applicable.

      Warranty. This camshaft kit includes a 12-month limited warranty covering manufacturing defects to ensure customer satisfaction. Application. It is designed specifically to fit 1994-2002 5.2L and 5.9L V8 RAM 2500 engines, providing targeted performance improvements without compatibility issues.

      Comp Cams K20-602-4

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      Installation Time

      (approx) a Day

      Difficulty Level:

      Mechanical expertise or professional installation required.

      Installation Guides

        No guide available for this part yet.

      What's in the Box

      • (1) Camshaft Kit
      4.7

      Reviews of Comp Cams Engine Products (361)

      Questions & Answers

      No questions about this product yet. Ask the First Question

      Will It Fit My Ram 2500

      • 5.2L V8 - 94, 95, 96
      • 5.9L V8 - 94, 95, 96, 97, 98, 99, 00, 01, 02