Final drive ratio

[stockman1]

I have a 3.55 final gear and a T5 trans. At redline in 4th (1:1) 6500 rpm I am at approx. 131 mph. I was thinking of going to 3.31 gear and calculations say that I should hit 140 mph at redline. Any downside to this? Comments?

[brsvo]

What's wrong with fifth? That's why their called T5's! My calculations say with a 373 final drive I can hit 140 in 5th.

[stockman1]

What's wrong with fifth? That's why their called T5's! My calculations say with a 373 final drive I can hit 140 in 5th.

I was always told to stay out of 5th on the track. Its overdrive & I could break the gear at high rpm?

[MikeFleming]

Perhaps if you're pushing >350HP. Not otherwise.

[stockman1]

Perhaps if you're pushing >350HP. Not otherwise.

saturday dynojet run at brothers performance approx 395 rwhp @ 6500 rpm. New forged internals, added intercooler, etc, New redline is 7000. Running very rich. Video on svcop FB page.

[MikeFleming]

Then you might have enough torque to cause problems with the stock T5 5th gear set.

I installed a 0.82 fifth gear set in my 3.35:1 T5 for my 2.5L engine that had coarser teeth with more engagement depth. And I now can't for the life of me recall the name of the place where I got it - husband/wife team small busness that's big into WC T5 parts and service.

I hate it when that happens.

[Kendal Coker]

Then you might have enough torque to cause problems with the stock T5 5th gear set.

I installed a 0.82 fifth gear set in my 3.35:1 T5 for my 2.5L engine that had coarser teeth with more engagement depth. And I now can't for the life of me recall the name of the place where I got it - husband/wife team small busness that's big into WC T5 parts and service.

I hate it when that happens.

How about this place http://www.hanlonmotorsports.com/

[MikeFleming]

That's it!

Thanks Kendal!

[SVO4PWR2]

Video on svcop FB page.

can ya link it here please

-RICH-

[brsvo]

Thanks for setting me straight about 5th not being strong enough. I had never heard that before. Bruce