RPM vs SPEED

[casperss]

Ok I know what gear i was told was in my car when I bought it but does this look right. It is supposed to be a 3.73 gear hear is a pic at abought 71 mph. my car is a m6 and its in 6th gear on a flat section of road with the cruise set. Irealy don't want to take the cover off any suggestions or ideas?

[splitfinger09]

that looks about right. Im m6 w/3.42 and at 70 im below 1500 about 1300 or so

[fluke]

Dude, you've got me wondering now.. I've got an m6 too, but I think I'm around 2000 at 70mph.. I'll have to try this weekend to see for sure what I am at @ 70mph.

[casperss]

thanks.

[splitfinger09]

Dude, you've got me wondering now.. I've got an m6 too, but I think I'm around 2000 at 70mph.. I'll have to try this weekend to see for sure what I am at @ 70mph.

what gear ratio?

[casperss]

well i've been wanting to change the lube over to Royal purple but I just hate to take the time to do it. maybe I'll do it next weekend so i'll know for sure.

[fluke]

what gear ratio?

Stock as far as I know, wasn't mentioned when I bought the car, got it at a dealership in FL over the summer. Exhaust seems different too, but have no idea what it is other than it isn't TDs and doesn't sound like stock exhaust I hear on two other WS6's in town (one of which I know for certain is stock because I know the guy), mine's louder. *shrug*

[splitfinger09]

Stock as far as I know, wasn't mentioned when I bought the car, got it at a dealership in FL over the summer. Exhaust seems different too, but have no idea what it is other than it isn't TDs and doesn't sound like stock exhaust I hear on two other WS6's in town (one of which I know for certain is stock because I know the guy), mine's louder. *shrug*

hmmm well i know stock m6's came with 3.42, but 2000 at 70 is way up there. I know im not even close to that.

[splitfinger09]

well i've been wanting to change the lube over to Royal purple but I just hate to take the time to do it. maybe I'll do it next weekend so i'll know for sure.

go for it, i actually just threw some royal purple in mine and it didnt take to long at all.

[casperss]

Fluke, 2000 rpm was that in 6th gear? sounds more like 5th. just wondering

[fluke]

Fluke, 2000 rpm was that in 6th gear? sounds more like 5th. just wondering

I'll check to see for certain tom. or sunday. 1:30 am in the morning is not good to my brain..

[casperss]

I'll check to see for certain tom. or sunday. 1:30 am in the morning is not good to my brain..

yea i know about that all to well.....

[splitfinger09]

haha yeah well at least we get to fall back this sunday. extra hour of sleep woo hoo

[casperss]

haha yeah well at least we get to fall back this sunday. extra hour of sleep woo hoo

yea bit it gets dark way to early, that sucks

[67CamaroRSSS]

FWIW: A4 w/3.73 in OD is 75 mph @ 2500rpm. 6th in an M6 (.5:1) is even lower than 4th (.67:1? or is it .7:1) in an auto. Your mph vs rpm seems right to me.

[FSANE]

holy crap.. I am @3000 RPM at 70mph

3.73 and 3600 stall

[fluke]

Just came back from my test drive!

70 mph = 1600 rpm for me. Was wrong about 2000, but still happy.

God it's cold outside, btw..

[garver]

mine is at 2000 @ 70 with stock ratio...The past owner may of changed it and didnt tell me.


edit Its a M6

[Mr. Luos]

www.f-body.org/gears

3.42's = 71MPH at 1600
3.73's = 71MPH at 1720
4.10's = 71MPH at 1900

That is figuring on a 26" tire.

[casperss]

Thanks guys