whats everyones rpms at about 70 with 4:10s what about 3:73s im still undecided on what gear to go with thanks for the help

 

if it helps at all I have the stock 3.23s and im at like 2100 ish at 70

 

There is a calculator for this somewhere, I always forget the link, ill try google to help you out.

And btw, its 4.10:1 or 3.73:1 not 3:73.

 

here ya go. there is one that CamaroZ28 has provided.

https://www.camaroz28.com/calcs/index.shtml

it is towards the bottom of the page. I believe it says RPM and MPH calculator.

Hope this helps.

I have 4.10s and a m6 and I haven't paid to much attention but I think I am in between 2k and 2.5k. If I get a tag anytime soon I will try to let ya know. Also my tires are stock sized. I'm not sure on rotation per mile but shouldn't be to different.

 

I am right around 2k with 6 speed and 4.10's. Hope it helps.

 

For the 94 and up T56, and stock tire diameter (25.65" with Z-rated 245/50-16's):

3.42 - 1,580rpm
3.73 - 1,710rpm
4.10 - 1,900rpm

Remember, the stock tach typically reads 100-200rpm higher than actual engine RPM. Best thing to do is read the RPM off the PCM with a scanner.

Won't help him, because you have an A4 and he has an M6. Different overdrive ratios on the top gear. A4 in 4th is 0.70, M6 in 6th is 0.50.

For anyone who has a 93 with the M6, 6th gear is 0.62

 

I believe my 97SS runs around 1900 at 70 with the 4.10s. I think that something between 410s and 37s, e.g. 3.9 seems about right. I believe it would provide the inceased torque and a bit more top end. JMHO

 

2050rpms @ 80 mph with 373's

 

hey thanks guys ive been deciding between these two gears for quite some time....i race the car quit a bit track and street but i dont want to kill my gas mileage i drive either 65 or 75 depending on the speed limit ( 55...65) so im leaning toward 3.73 but im still a lil undecided but thanks for everyones help

 

2050@70mph with 4.10 and m6.

 

I believe i'm right around 2150 at 70MPH, and going from my 3.42 gears i only noticed maybe a 1 or 2 mpg drop. It really didn't seem to effect gas mileage but hardly.