Going to be ordering my 2012 M6 in the next few days and can't really decide wether to go with 3.55's or 3.73's. I had a few fox bodys with 3.55 and liked them, always seemed like it needed a sixth gear though. Im not positive but I think my 04 Cobra came with 3.55 or something close to that. Those felt pretty good with the six speed. The one 2011 I test drove had 3.73s. I liked it because six gear was actually usable around town, just a little concerned about the highway mileage though. This will be my daily driver with about 45 mile round trip commute per day all highway. What do you guys think?
3.55's or 3.73's? How would you order yours?
- Thread starter psucobra
- Start date
Are you DD or weekend warrior? plans of F/I?
3.31 - great for long trips and awesome mileage, even modded i see 32mpg highway and 19 on the street but to race from a roll you need 2nd gear starts to pull
3.55 - great for all around, seems to fit the best for F/I and just DD for mpg
3.73 - hold on to your shorts buddy if you N/A... awakens the car vastly
figure out your goals. what do you want to obtain from this car and then go from there
3.31 - great for long trips and awesome mileage, even modded i see 32mpg highway and 19 on the street but to race from a roll you need 2nd gear starts to pull
3.55 - great for all around, seems to fit the best for F/I and just DD for mpg
3.73 - hold on to your shorts buddy if you N/A... awakens the car vastly
figure out your goals. what do you want to obtain from this car and then go from there
Last edited:
I had 3.31s... I got beat by my buddy with 3.55s all day long... Then I modded and we would trade off when he shifted but were dead even.. Then I swapped to FRPP 3.73s and I own him any where any time... He is a bone stock 2011 with 3.55s and brembos...
With a tune I still get 28 mpg highway easily..
Not surprised at this outcome. Would have been a great vid :bored:
So i guess getting rid of my 3.31's is like necessary.... 
3.55s imo
I have the 3.73.. the car i test drove before buying had 3.55s.. I still can get very good gas mileage but I have great acceleration and its a bunch more fun. IMO a base model with track pack and 3.73 is the way to go!
I had 3.73's and grenaded that rear so I threw in a 3.55 rear I had laying around and I like the 3.55 gears better. I can't tell a difference performance wise and now my MPG stays in the 20+ range. Before with the 3.73's I was staying in the 17-18 range.
I had the 3.15 in mine and put in 373s and love them
I've got the 3.55 and IMO it is the best gearing with everything considered. Between a 3.31 and the 3.55 or a 3.55 to 3.73 you wont be able to SOTP notice, just like you can't tell 10hp on a 400hp car. If you went from 3.31 to 3.73 you might barely feel the difference. Obviously there will be a difference in acceleration between them but it isn't night and day like some describe it.
If you don't care about mileage and you just race from a dig, the 3.73s are for you, if you roll race the 3.55 is probably a better choice, if you want mileage well that's obviously the 3.31.
If you don't care about mileage and you just race from a dig, the 3.73s are for you, if you roll race the 3.55 is probably a better choice, if you want mileage well that's obviously the 3.31.
I have 3.31's manual. If I would have ordered one I would have went 3.55's for a DD /weekend warrior with a standard. The 3.31's are actually great in first... I cant imagine the short amount of time that you are in first with 3.73's. Plus on the quarter a lot of people with 3.73's run out of fourth gear I hear. I can imagine the additional take off with 3.55's though. My Fox body had 3.73's but completely different trans. gearing. Anyway, I can do first second fifth on the onramp it's funny. My wife says why did you shift so little? I said I am already doing the speed limit so I just put it in fifth, then merged and hit sixth.
Sounds like that old one was dying when/as you drove it.
I love my 3.55's
Out of those two I would say 3.55's. 1st and 2nd already wrap out quick with 3.31's, I wouldn't want it any shorter personally.
Users who are viewing this thread
