rmerchant3

I thought this would be some good info to share with everyone. I have been toying with the idea of upgrading my differential to one of Puddy's units, so I came up with this handy chart. It is good for quarter mile estimated gear shifts, cruising rpms, etc.

AP1 transmission options



AP2 transmission options

rmerchant3

I ended up going with the 3.63 option with my AP2 transmission limited to 8200rpms. I am turbocharged and absolutely love it. I drove it for about 2 months naturally aspirated with this gearing as well and still felt it suited the car better.

hecash

I'm in my 5th year of running with a 3.9 on my MY04 with SC and I still love it. My K-Pro rev cut off is 8,500 rpm.

rrounds

Is there a link for this? I'm thinking of running some 265/40-17 tires out back and if there is a link so one could run the numbers for different size tires and gears that would be great. I have some printouts from the old turnzero site thats been gone for a long time now but not as complete as what you have.

ROD

rmerchant3

Honda Transmission Calculator by ZealAutowerks

Some of the preselected gear ratios are inaccurate. Make sure all the data is right and your outputs will be spot on. Also, don't forget about the primary gear reduction in our cars.