dmhines

I personally would stay away from the 4.10 if you do any amount of Highway driving .... although the RPM difference isn't that much ..


Using this calculator:

http://www.csgnetwork.com/multirpmcalc.html



Automatic in O.D. doing 70 MPH

3.73: 2300 RPM
4.10: 2500 RPM

Blue07GT

I like my 3.73s, its a good all around gear, and your gonna notice the difference changing from the 3.31 that you have now. I know i sure as hell did!

Devil Wolf

im an auto 6er, ive got 4.10s now, i will be swapping to 3.73s on july 21st.

ill let you know the difference between the two.

CapitalG

so Sixxers have 3.31 and GTs have 3.55 ?

And really how much can I shorten my engine's life by flooring it occasionally anyways I mean isnt that was its built for I always thought not maintaining your engine (oil) or running lean / rich and stuff like that is what killed the engine life. Not doing burnouts in the parking lot every friday [&:]

J to the C

I put 4.10's in my 07 Auto GT last week, ( along with a CAI tune and UDP's)a totally different car itrocks!RPM jumps about 400, however I never feel if I am in the wrong gear when I want to "jump on it". Round town mileage is about the same and lost about 3-4 mpg on the highway (I also drive with a light foot on the highway. I considered both and wound up with the 4.10's). I do a mix of 50/50 city and highway. I looked at it this way if I went to buy a V6 and then drove a GT which would I buy? That was the (il)logic for me. Anyone lend the man a V6 with 4.10's for a test drive?

CapitalG

would cruise control at 60 give you back the mileage you lost with the gears on the HWY you think ?

on my trip to Maryland from NC I used a little under a 1/4 tank less using cc the whole way back set on 60-65 and driving behind trucks for about 1.5 hours

J to the C

It hasnt bought me better mileage with using cc. Again I drive with a light foot. I expected better gas mileage but the seat of the pantsexperience surpassed my expectations,well worth it in my opinion. I just wish I had done it sooner. There is a great tuner inNorthen VAthat installed my gears let me know if you need a name and number.

thewarmachine

I want gears, but I'm afraid that 4.10's would make 1st gear virtually useless and my car would become a 4-speed.

gman73

As the saying goes, "don't fear the gear". I have manual with 4.10s. 1st gear is not entirely useless. Yes, you will shift a lot sooner. As far as hwy driving, 4.10s are great on the hwy. I drive nearly 65 miles a day on the hwy. Compared to the 3.55s gas mileage did drop a little, but accelertation espcially from 70-90 has improved.

CapitalG

if it was south VA I might consider it but north VA is too much , thanks though