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Product Spotlight: BTR Godzilla Truck Norris Camshaft

Give Ford’s Big V8 a Meaner Right Hook

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The Auto Builder Staff

Photos Courtesy of Brian Tooley Racing

Godzilla already has the displacement. Truck Norris brings the attitude. If your idea of a good truck involves a rumbling idle and a healthy appetite for throttle, Brian Tooley Racing’s Godzilla Truck Norris Camshaft deserves a spot on your build sheet.

Because an engine named after a city-stomping monster ought to sound like it has somewhere better to be.

BTR GODZILLA TRUCK NORRIS CAMSHAFT

222/234 .641″/.644″ 110 LSA            INTAKE LOBE LIFT @ TDC: 0.08135

  • Engine Family: FORD GODZILLA 7.3L APPLICATIONS
  • Recommended Engine Size: 7.3L
  • Recommended Valve Spring: OEM
  • VVT Limiter: BTR-VVT-GZ-8CAM (INCLUDED)
  • INTAKE DURATION @.050″: 222
  • EXHAUST DURATION @.050″: 234
  • LOBE LIFT INTAKE: 0.356
  • LOBE LIFT EXHAUST: 0.358
  • INTAKE LOBE LIFT @ T.D.C.: 0.081
  • ROCKER ARM RATIO: 1.8
  • NET LIFT INTAKE: 0.641
  • NET LIFT EXHAUST: 0.644
  • LOBE SEPARATION ANGLE: 110
  • RPM Operating Range: 1500-6400
  • Expected Cam Swap Gains (P2P): 102HP 60FT-LBS
  • Idle Quality: Great rumble sound without sacrificing factory comforts.
  • Torque Converter Characteristics: Works with factory converters
  • Drivability: Mild-mannered daily feel, with a nice aggressive sound

More Muscle Behind the Rumble

Designed for Ford’s 7.3L Godzilla, this hydraulic roller camshaft gives the big pushrod V8 a more aggressive personality. BTR lists expected cam-swap gains of 102 horsepower and 60 lb-ft of torque, peak to peak, with an operating range of 1,500–6,400 rpm. Those are BTR’s published figures; your combination and calibration will determine the result.

That’s the appeal: a camshaft with enough ambition to make the accelerator considerably more interesting. Whether Godzilla lives under a truck hood or between the fenders of your latest project, there’s something deeply satisfying about giving a big V8 more reason to clear its throat.

Plenty of Attitude, With Daily Driving in Mind

BTR describes the Truck Norris as delivering an aggressive exhaust note while retaining mild daily driving manners and factory comforts. It works with factory torque converters, and BTR recommends OEM valve springs.

The grind carries 222/234 degrees of duration at .050-inch lift, .641/.644-inch valve lift, and a 110-degree lobe separation angle. The required BTR-VVT-GZ-8CAM VVT limiter is included and must be installed in the cam phaser. Proper VVT control and engine tuning are essential to getting the most from the package. Part number: BTR-GZTN.

Give the calibration the attention it deserves, then let the big Ford do the talking. Truck Norris sounds like the kind of trouble your project has been asking for.

ARTICLE SOURCES

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Brian Tooley Racing

2100 Filiatreau Ln,
Bardstown, KY 40004

(888) 959-8865

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