Background Info
2003.5 G35 Coupe
6MT


I was searching through some threads about swapping to a 3.3 fd because traction is getting a little ridiculous at 550 hp and room to move up. So I saw that people were topping out at 112-113 in 4th gear and I realized that I am crossing the traps at 125 hitting the 7200 rev limiter in 4th gear

then i opened up my service manual and it showed this



Am I the first person to notice this? I havent had anyone mention this in any of the other 3.3fd discussions

 

thats probably a mistake. at wat rpm are u at when u drive at 80mph?

 

cars parked for the winter but I know for sure I am banging rev limiter at the end of a 125 mph trap 1/4 mile. And this is using a MT bias ply 26x11.5 which i believe is shorter than a stock wheel and tire combo

if i can remember correctly i am at about 2300 rpm at 65, that is just a really rough estimate

 

125 sounds about right for a 3.5 with 7200 redline. Alberto would probably be a better person to ask on this tho.

 

that's odd. my service manual for my 2005 G has 2 differnet ring gears. one for 5AT cars, and thother for 6MT and Sport 5AT cars.

 

3.3 @ 126mph trap - not terminal speed - was roughly 7000rpm's through the traps.

I would trap 116mph with a 3.5 going through at about 6800rpm's on stock block.

At 60mph I sit at 2050rpm's in 6th now, I doubt you have a 3.3FD.

112mph is 4th gear at 6600rpm's on a 3.5FD.

Easy way to tell, with 7000-7200rpm's in 3rd redline with a 3.5 is around 95mph, with the 3.3 its 105-110mph easy.

 

my 60 mph rpm is a total guess, ill drive the car tonight and report back later

is it possible that the G35 FSM has a typo in it?

 

soo i drove around today and at 60 mph my rpm is a tick below 2100 rpm, conclusion?

 

that would be crazy if it was a 3.3, as i have 03.5 g35 mt as well. i couldnt imagine what a 4.03 would feel like then. I dont have 1st gear if i romp on it as it is.

 

alright, nevermind. The 2003 fsm is wrong, I have a 3.5 fd

i used a calculator and 4th gear with a 3.5 would theoretically do 126ish at redline which is what im hitting

 

Take into account the size of your rear tire also...