Do fully-customizable gearboxes reduce rotating mass?

  • Thread starter TexRex
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TexRex

TexRex

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I've been giving classic cars with short 4-speeds an overdrive gear lately and the cars seem to be more lively after doing so, almost as though a lighter flywheel has been installed, even with 1st-4th gear ratios being identical to those that come standard. Does the benefit of this particular part go beyond being able to tailor a car to a track?
 
I didn't want to bump for the sake of bumping but I don't think having waited over a week qualifies. Anyone holding out? Has it been asked?
 
OK I will talk to you ;-)

No it doesn't. What I think you will find is although the gear ratios may be the same the final drive may not be which will affect the overall ratio.

Having said that I do think that the race gearboxes change gear quicker which also makes the car seem "more lively".

I hope this helps.
 
I guess I should have stated that the final is the same as well, otherwise what's the point? Most of those muscle cars don't actually need an adjustment in the final gear for the purposes of matching the forward ratios, but on those that have, I've made sure to go back and revert it to its original ratio.
Faster shifts could well be the difference, since they're allowing me to spend more time accelerating before it comes time to get on the brakes. Thanks for the reply.
 

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