What gears for an Auto?
#21
Yes you will be at higher rpm at all times and about 2-3 mpg average loss. You will be visiting the gas station much more often with 4.10's. I can literally watch the dial move down now lol.
How are people getting 22-23 mpg gas mileage? I never get above 19 and now with the 4.10's I average 17 mpg.
How are people getting 22-23 mpg gas mileage? I never get above 19 and now with the 4.10's I average 17 mpg.
#22
Originally posted by mco05gt@January 15, 2006, 8:50 AM
How bad did it drop? I drive about 85 miles a day round trip to work (all highway)and don't want to be able to pass everything but a gas station.
:bang:
How bad did it drop? I drive about 85 miles a day round trip to work (all highway)and don't want to be able to pass everything but a gas station.
:bang:
If you're on a budget and drive 85 miles a day I would say don't get the gears. However if you've got cash to burn then definitely get them because they're fun as sh%%.
#23
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Originally posted by mco05gt@January 15, 2006, 1:44 PM
At 70 I am at 2200-2300 rpm but the best I can do for milage is 19.5-20.2 with the stock gears.Also running Bamma chips 93 tourque tune.I would kill to see 25 mpg.
At 70 I am at 2200-2300 rpm but the best I can do for milage is 19.5-20.2 with the stock gears.Also running Bamma chips 93 tourque tune.I would kill to see 25 mpg.
Don, are you sure your tach is ready correctly???? I would be tickled to get your gas mileage with the STOCK GEARS. I am also running in the 2200 rpm range with the stock auto gearing @ 70 mph. I am not sure how you can only be running 2500 rpm @ 70 mph with the 4:10's. One of the ways I know I am getting above the 2000 rpm mark is that my Borla's stop the drone at 2100 rpm and that is @ 70mph and above.
Scott
#24
Originally posted by 70MACH1OWNER@January 15, 2006, 12:26 PM
Don, are you sure your tach is ready correctly???? I would be tickled to get your gas mileage with the STOCK GEARS. I am also running in the 2200 rpm range with the stock auto gearing @ 70 mph. I am not sure how you can only be running 2500 rpm @ 70 mph with the 4:10's. One of the ways I know I am getting above the 2000 rpm mark is that my Borla's stop the drone at 2100 rpm and that is @ 70mph and above.
Scott
Don, are you sure your tach is ready correctly???? I would be tickled to get your gas mileage with the STOCK GEARS. I am also running in the 2200 rpm range with the stock auto gearing @ 70 mph. I am not sure how you can only be running 2500 rpm @ 70 mph with the 4:10's. One of the ways I know I am getting above the 2000 rpm mark is that my Borla's stop the drone at 2100 rpm and that is @ 70mph and above.
Scott
#26
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Originally posted by don_w@January 15, 2006, 3:58 PM
Take a look at the attached spreadsheet. It is set-up for the stock tire diameter right now (27.18"). My 275/50-17s are about 27.8" tall. Plug 27.8 into cell J3 to see what it is for my car.
Take a look at the attached spreadsheet. It is set-up for the stock tire diameter right now (27.18"). My 275/50-17s are about 27.8" tall. Plug 27.8 into cell J3 to see what it is for my car.
Scott
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Im in the same dillema 3.73 and 4.10 what are the rpm's at 80? maybe some of you auto guys can take a quick cruise and find out for me, also how much am i looking to shave off my 1/4 mile with these?
#28
Originally posted by ren274u@January 15, 2006, 3:02 PM
Im in the same dillema 3.73 and 4.10 what are the rpm's at 80? maybe some of you auto guys can take a quick cruise and find out for me, also how much am i looking to shave off my 1/4 mile with these?
Im in the same dillema 3.73 and 4.10 what are the rpm's at 80? maybe some of you auto guys can take a quick cruise and find out for me, also how much am i looking to shave off my 1/4 mile with these?
#29
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Originally posted by ren274u@January 15, 2006, 5:02 PM
Im in the same dillema 3.73 and 4.10 what are the rpm's at 80? maybe some of you auto guys can take a quick cruise and find out for me, also how much am i looking to shave off my 1/4 mile with these?
Im in the same dillema 3.73 and 4.10 what are the rpm's at 80? maybe some of you auto guys can take a quick cruise and find out for me, also how much am i looking to shave off my 1/4 mile with these?
I think the 4:10's will get you close to .5 sec. off your 1/4 mile speeds. Not sure about your RPM @ 80 MPH. My guess is 2800 to 2900 rpm.. Based on what my car does with stock gears.
Scott
#30
Originally posted by SRQ05GT@January 15, 2006, 4:26 PM
If i go with 4:10s do i need to reprogram?
If i go with 4:10s do i need to reprogram?
Well you need to recalibrate the speedometer. So if you don't already have a tuner...you will need one. I used a Predator to recalibrate and kept my 93 octane tune.
I will say that my engine light has been on since installation of the gears...i'm thinking I need a custom tune now.
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