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Message: [QUOTE="SpartanDieselTech, post: 1253878, member: 22311"] As you already know, the C35 clutch is a bit weaker than in the old ones. There's no difference in feel or shift time on the 2-3 shift, however the 4-5 is a more sluggish shift than the previous years, taking about 600ms to complete the shift vs around 375 previously. That shift takes place around 80mph at WOT, so luckily it doensn't occur under full torque load except during prolonged WOT runs. Despite having had no issues with excessive slippage in testing, I couldn't expect that clutch pack to last forever if you are beating the **** out of it over a prolonged period. This one has endured the last couple of months fine, and fluid still looks good. ETA- as soon as time allows, it is on my agenda to pull the transmission from my main test truck and install an earlier model C35 clutch. Will make custom file sets for guys who want to upgrade that single pack to the earlier model. [/QUOTE]

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