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Guys, build the OD section to 2006 diesel specs and you can drag race that thing with the OD on. Think about it for a minute, the 47/48 diesel trucks are towing 20,000 lbs plus in OD these days. Just go get the thin snap ring, the OD retainer plate and ditch the wave spring and you get an extra clutch and steel in there. Also, if I’m not mistaking the diesel spring is heavier than the gas job.
You are correct in stating the O/D clutch can handle the power. And your comparison to the diesel is correct as well.
Side note - The Large spring in the OD unit (some people call it the OD spring - it’s called the direct clutch spring) is not any different between the gas and diesel - it’s just painted because it was tested (when new) to be at the high end of specification. And it’s off when in OD - the only clutch driving the vehicle in the overdrive unit is the OD clutch.
In any forward gear besides OD the spring then applies the direct clutch and the ORC assists the direct clutch.
In reverse the direct clutch and spring drives the unit.
