Liberty’s New 3 and 5-Speed Drag Racing Transmissions

We spoke with both Craig Liberty and Casey Patterson at PRI about Liberty’s new products. The Extreme 3-speed is for the Pro Mod / Alcohol Funny car type racers. Craig said, “It’s dedicated to holding 3500HP.” This beauty features a magnesium case and tail housing (bushing or roller bearing), 32-spline 300M output shaft, and 300M input shaft. It includes a Pistol Grip Manual Liberty Shifter with an optional Air Shifter for $780.00. This is one tough hombre!

Liberty was chosen by Ford Racing to provide its new LSC5100 5-speeds for the 2010 Cobra Jet racer. Like its big brother, Extreme, it features a magnesium case and tail housing (both o-ringed) and a 300M output shaft. Also included are exclusive V.A.R. material gear sets and a custom input (Pilot, Length, and Spline) shaft. It’s rated to approximately 1100 HP and 1000 lb-ft. That should be enough for anything those Super Stock racers throw at it!

Liberty also provides what it calls Metal Enhancement for its transmissions and gears:

• CRYOGENIC PROCESSING

Process: Deep freeze process that removes localized stress; alters and stabilizes molecular structure.

Result: Dimensional and core stability increasing wear and fracture resistance.

• THERMAL STABILIZATION

Process: Heat treat draw to reduce stress.

Result: More resistance to surface fractures.

• SHOT PEEN

Process: Action that converts tensile stress (bad stress) into compressive stress (good stress).

Result: Higher load capacity.

• SURFACE ENHANCEMENT

Process: High energy, extremely uniform finishing process that microscopically blends peaks and valleys of surface finishes. This method does not alter gear involute form and results in uncompromised integrity.

Result: Reduced surface friction.

Liberty says it’s impossible for any single process to be the optimal enhancement for all applications. As applications vary and to best suit their customers’ needs, Liberty can recommend the best process or combination of processes to achieve optimum results.

About the author

Bruce Sawicki

Bruce has loved cars, since birth. From building and racing go-karts as a kid, to drag racing Mavericks and Mustangs, to roadracing Formula Fords, dirt track go-karts, Legends oval tracking in a '34 Ford Coupe, and back to drag racing and open tracking a street Mustang, he's seen it all. On his bucket list are to race the 24 Hours of Daytona, surpass 200 mph, and convert his '95 Mustang into a Ford GT/GT-40 emulation.
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