Comp Cams Mutha Thumpr Cams (05-10 GT)

Comp Cams Mutha Thumpr Cams (05-10 GT)
Click to Enlarge
19 Reviews
(4.9/5)19 Reviews
OUR PRICE$712.97(pair)
Comp Cam Mustang Valvetrain Components
Item # 30138
Market Price $839.99You Save 15% ($127.02)
Ships the same business day

Product Features

  • Very rough muscle car idle
  • Biggest cam available for stock heads
  • Great power above 4900 rpm
  • No springs required ("NSR") - Compatible w/stock valve springs
  • Fits 2005-2010 4.6L GT and Bullitt
Mutha Thumpr. Comp Cams Mutha Thumpr Camshafts really live up to their name. These are the largest aftermarket camshafts you can run with the stock factory heads. These Comp Cams produce great power gains over 4900 RPM's with a very rough muscle car idle.

No Springs Required. These cams are compatible with your stock factory valve springs, so there's no need to remove and replace your 24 stock springs, saving you time and money.

Application. Comp Cams Mutha Thumpr Camshafts are sold as a pair for your 2005 to 2010 3V 4.6L modular powered Mustang, including both the GT and Bullitt models.

Technical Note. The installation of these Comp Cams will require a phaser limiter kit and custom ECU programming.

Comp Cam Data Sheet
Part Number: 127020 Grind Number: MT273LL
RPM Range: 750 to 6600 Engine Type: FORD 4.6 and 5.4 SOHC MODULAR 3-V
Lobe Sep Angle: 109

Intake Exhaust
Duration: 273 306
Duration @ .050" Lift: 234 254
Valve Lift: 0.45 0.45

Installation Time:

(approx) a Day

Difficulty Level:

Mechanical expertise or professional installation required.

What's in the box?

  • (2) Camshafts

What's in the box?

  • (2) Camshafts
  • GT 05, 06, 07, 08, 09, 10
  • Bullitt 08, 09
Known Exceptions:
Fits 2005-2010 4.6L Three Valve Mustangs Only

About Comp Cams

Comp Cam Mustang Valvetrain Components
Based out of Memphis, TN, the COMP Performance Group™ is a family of aftermarket performance companies that specialize in camshafts, transmissions and torque converters, fuel injection, cylinder heads, clutches, nitrous, induction systems and more. The CPG group includes such brands as COMP Cams®, TCI®, FAST™, RHS™, Quarter Master®, ZEX™, Inglese™ and many others. Winning performance, superior engineering and unmatched quality form its foundation, and from the street to the strip, circle track to road racing, the COMP Performance Group™ touches the lives of performance enthusiasts everywhere.