Thread: Some Great 6 Speed Tranny Info.

Everything at 23.5 tires at 8000 RPMs

2002 Spec V Tranny

1. 3.417====37 MPH
2. 1.944====65 MPH=====4551 RPMs
3. 1.258====100 MPH====5177 RPMs
4. 0.947====133 MPH====6022 RPMs
5. 0.773====172 MPH====6192 RPMs
6. 0.630====201 MPH====6876 RPMs

Final drive 4.429


2004-2006 Spec V Tranny

1. 3.153====43 MPH
2. 1.944====70 MPH=====4932 RPMs
3. 1.392====97 MPH=====5728 RPMs
4. 1.055====128 MPH====6063 RPMs
5. 0.809====167 MPH====6135 RPMs
6. 0.673====201 MPH====6655 RPMs

Final drive 4.133


P12 20V Tranny
The Best 2L SR20VE gear box making 200-220 WHP. Should also be able to launch the trans in 2nd gear on the street to elimniate wheel spin because of to very quick 1st gear


1. 3.153====37 MPH
2. 1.944====61 MPH=====4932 RPMs
3. 1.392====86 MPH=====5728 RPMs
4. 1.055====112 MPH====6062 RPMs
5. 0.809====146 MPH====6135 RPMs
6. 0.673====175 MPH====6655RPMs

Final drive 4.75


P12 Tranny with 02 Spev V 4.429 FD
This trans setup should run best with a 92mm x 86mm 2.3 L motors making peak WHP from 8500-9000 RPMs with Kelford 184C camsand 92mm x 92mm 2.45 L motors making peak WHP from 8000-8500 RPMs with Kelford 184C cams. The motor size will allow you to launch car in 2nd gear to eliminate wheel spin and get a great launch. Tire choices to get everything just right are form 22x8 to 23x8 slicks

1. 3.153====40 MPH
2. 1.944====65 MPH=====4932 RPMs
3. 1.392====91 MPH=====5728 RPMs
4. 1.055====120 MPH====6063 RPMs
5. 0.809====156 MPH====6135 RPMs
6. 0.673====188 MPH====6655 RPMs

Final drive 4.429



In my opinion the 20V gear box with the 2002 Spec V 4.429 FD is the best all around NA gear box possible.



Here is the reason why launching these 6 speed trans on the street NA in 2nd gear will work and work great.

SER makes stock 125 WHP

All 2.3L and 2.4L VE motors will make 250-275 WHP

SER @ 125 WHP and VE 2.3-2.4L @ 250-275 WHP is a ( 100-120% increase in WHP)

SER Gear box
1. 3.063====44 MPH
2. 2.086====73 MPH

P12 6 Speed Gear box
1. 3.153====37 MPH
2. 1.944====61 MPH


The P12 2nd gear ratio - 61 MPH is 39% longer than the SER 1st gear 44 MPH.

The VE 2.3L-2.4L which is 125% more WHP than the standard DE motor is still in the favor of the big motor. So inconlusion the VE motor will have no problem launching in 2nd gear which will translate into very little tires spin and way more forward motion

How it should be better with lower FD? Bigger = better. Even P12 20V has long gears. Long gears is biggest Nissan´s problem against Honda´s trans (plus their mechanical LSD > VLSD).

i agree, would it not be better with 4.78 fd making the gears shorter

OOOOOOOOOOOOOOOOOOH Really.

First off the P12 trans gears are just about the same as a Nismo N1 Gear box.

The only factory Honda gearboxs and FD with quicker gears than P12 20V 1-5 is the Honda Type R partially ( 20V beats it % wise ) and Acura RSX Type S, 2002-2002 and 2004-2006

P12 20V Tranny

1. 3.153====37 MPH
2. 1.944====61 MPH=====4932 RPMs
3. 1.392====86 MPH=====5728 RPMs
4. 1.055====112 MPH====6062 RPMs
5. 0.809====146 MPH====6135 RPMs
6. 0.673====175 MPH====6655RPMs

Final drive 4.75



N1 Nismo tranny

1. 3.200====39 MPH

2. 2.048====62 MPH

3. 1.500====84 MPH

4. 1.152====109 MPH

5. 0.872====145 MPH

Final drive 4.437 FD




Below are the quickest factory Honda gear boxes

Honda Type R JDM

1. 3.230 same as 20V ==== 37 MPH
2. 2.105 shorter than 20V ==== 56 MPH
3. 1.458 shorter than 20V ==== 81 MPH
4. 1.034 longer than 20V ====114 MPH
5. 0.787 longer than 20V ====150 MPH

Final drive 4.75



Acura Type S 2004-2006

1 : 3.266 shorter than 20V
2 : 2.130 shorter than 20V
3 : 1.517 shorter than 20V
4 : 1.147 shorter than 20V
5 : 0.921 shorter than 20V
6 : 0.738 shorter than 20V

Final drive 4.765



Acura RSX Type S 2002-2003

1 : 3.266 longer
2 : 2.130 shorter
3 : 1.517 shorter
4 : 1.147 same
5 : 0.921 shorter
6 : 0.738 shorter

Final drive 4.388

The problem here is this.

My car with a 216 WHP and 160 Ft Torque 20V SR20VE on 23.5 in tires runs 13.4 @ 104-105 MPH on street tires. I can spin the tires from a role at 35 MPH like I was driving on ice or oil with the standard SR20DE transmission.

So there is no way in hell I am going to run a 20V trans with a 2.3L P12 motor making 260-270 WHP and 190-200 Ft torque.

You guys act like you drive your cars at the track all the time.

My car drives on the street 99.5% of the time and with that type of power I need to find traction.

I might just put a Helical LSD in the 20V trans a leave it alone if I can find out 100% that I can launch the car in second gear withou braking it.

P12 20V Tranny

1. 3.153====37 MPH
2. 1.944====61 MPH=====4932 RPMs
3. 1.392====86 MPH=====5728 RPMs
4. 1.055====112 MPH====6062 RPMs
5. 0.809====146 MPH====6135 RPMs
6. 0.673====175 MPH====6655RPMs

Final drive 4.75

You surely love your tranny numbers, Dre.

I wish you could have gotten back to me in regards to the huge compression ratio PM I sent you months ago.

what are street tyres, toyo r888s?

just the comment about the best all round NA box threw me of a bit coz each car is different, we dont all have the kinda power you have so i would prefer the higher final drive to compensate. i have never had my car timed but i reckon judging by cars i have raced and the times they got that it would be in the high to mid 14s

205/40/17 Kumbo Ecsta MX is the tires on my car.

quicker gear boxes dont all ways mean faster to the 1/4 mile.

a SR20VE with 205-220 WHP will run faster 1/4 mile times with a SR20DE gear box vs a SR16VE gear box. The reason why is the SR20DE gear box will be able to run the 1/4 mile at 104 -107 MPH and do it all in 3 gears. The SR16VE gear box is forced to go to 4th gear which take up time and travels about 12-15 MPH in 4th to get to the end of the 1/4 mile while be at the lowest part of the RPM band making the least amount of power at the same time traveling a great distance while accelrating the least.

I agree its hard to really nail down what is the best gear box. It really depends on the type of racing you do. If we are talking about drag racing, you want to look at your trap speeds to determine what kind of gears you want.

If like Andreas, you are trapping @ 104-105 you can see he's having to shift into 4th on all the gearboxes he listed with a 8000 RPM redline. I would get taller tires and extend my rev's so I could finish in 3rd.

If thats not an option and you have to shift into 4th, you want the shortest gears possible, without having to shift to 5th to finish the race.

Its a trade off. Maximize the amount of time you are in the powerband, while also taking into consideration the time lost for each shift.