Diff gearing vs Trans life
#1
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Diff gearing vs Trans life
On my build, I decided to go the 6spd/3.6 route. Since then I've had more than one person comment about more strain on the trans since I lowered the diff ratio from 4.1 to 3.6.
Can someone explain to my uneducated self how a lower diff ratio would increase stress on the trans? Didn't make sense to me off the bat
Can someone explain to my uneducated self how a lower diff ratio would increase stress on the trans? Didn't make sense to me off the bat
Last edited by Jumpster74; 06-24-2021 at 03:47 PM.
#2
When you're traction limited, the amount of torque going through your trans is determined by torque at the wheels. Wheel torque divided by diff ratio = trans torque. Going from 4.1 to 3.6 means 14% more torque at the gearbox output shaft to reach the limit of traction at the tyres.
Once you're engine limited, diff ratio doesn't make any difference to the load on your trans.
Once you're engine limited, diff ratio doesn't make any difference to the load on your trans.
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