Description
The JIMS FAT 6 transmission is a rock solid, in.bolt-inin. performance upgrade for the stock, O.E.M. 6-speed transmission. Starting with our raw material, JIMS designed FAT 6 gears to be manufactured from the best aerospace grade 9310 American steel available. 9310 steel is known for its high core strength, toughness, hardenability and high fatigue strength. The gear teeth are straight cut and have been increased up to 53% in width, when compared to stock gears, for additional load capacity andstrength. These transmissions utilize JIMS quick shift ring technology minimizing the annoying in.clunkin. when shifting. A lightened, 1-piece, steel shift drum, combined with shift ring dogs and gear pockets that are back cut, will ensure that gears stay engaged, and do not pop out of gear, causing a premature failure or sheering of gear teeth. The teeth are ground to a precise mating profile, resulting in a smooth ride with zero gear whine. JIMS chose gear ratios very similar to stock, withthe final drive ratio remaining 1:1. The shafts and gears are assembled into a JIMS 6061 billet aluminum BIG bearing trap door that reduces flex in high performance applications. These bolt in cassette’s are compatible with your stock gear selector, both Twin Cam and Milwaukee Eight, and require no modifications to the case or exhaust mount. The JIMS FAT 6 is clearly the right choice, whether you are simply looking for a performance replacement, racing or hitting the salt flats. Backed by a 2-year warranty against manufacturers defects, the JIMS FAT 6 transmission checks all the right boxes which include strength, reliability, precise shifting, quiet running and no modifications.
* Upgrade on OEM # 35000198A & 36300037
