FIVE SPEEDS OR SIX?

摘要

In addition to the three different trim levels offered by Hurst Driveline Conversions' kits-Basic, Deluxe, and Elite-Hurst offers a choice of either a Tremec 500 or 600 five-speed, or a T56. To help Pro Touring aficionados decide between them, here's a quick breakdown of what each has to offer. The Tremec TKO 500 and 600 are an evolution of the TR-3550. These extremely stout gearboxes are rated at 500 and 600 Ib-ft of torque, respectively. While the TR-3550 was designed to work in concert with meager stock V-8s, the TKOs feature larger gears, tapered roller bearings, a beefed-up case, an internal three-rail shift system with cast-iron forks, 4615 alloy steel gears and shafts, a stronger single-piece countershaft, and a short-throw billet shifter.