Those of you with gears

06RedfireGT · July 27th, 2007, 03:31 PM

how was your fuel economy effected by gears (3.73 or 4.10). also what are your RPMs at when your goin like 80-90mph. i was on the interstate the other day and at 85 they are like 2500 with 3.33s, so what would they be like with 4.10s?

1LOUDGT · July 27th, 2007, 03:38 PM

65-75 usually your around 2700-2800 with 4:10's.

Regency 2007 · July 27th, 2007, 03:38 PM

I have a manual with 4.10's but I also have 20" wheels and tall tires so it is not as steep as a true 4.10 but I love them... my car was a DOG! when it had those 20" foose wheels and 3.31 rear

I get 33mpg on the interstated/highway. I know it sounds like a lie but I get it everytime! My RPM,s are around 2,250-2,400rpm going 5mph over the speed limit I believe.

06RedfireGT · July 27th, 2007, 04:09 PM

thanks for the input guys. its not as bad as i thought.

flattusmaximus78 · July 27th, 2007, 05:19 PM

If you have a loud exhaust system... at highway speeds it might get on your nerves.

acehogg69 · July 27th, 2007, 07:20 PM

Flat, u think it would be any diff going to 3.73's from 3.55's?

Regency 2007 · July 27th, 2007, 08:32 PM

3.55's to 3.73 will be hardly any difference... go 4.10's people are so scared of the gear these days sheesh! and if it feel too steep, throw some taller rubber on it

TheUNZippee! · July 27th, 2007, 09:25 PM

4:10's FTW. You only lose about 400 rpm in 5th, it doesn't affect your mileage on the highway, and will in fact improve your in-town mpg, due to the fact that the taller gear makes it easier for your engine to get the car rolling. Some guys complain that the 4:10 winds things up too quickly. Uhhm, that's the whole idea of improving acceleration. You just have to have patience and practice your shifting. (that's a nice way of saying learn how to drive, silly) lol

Gunny · July 27th, 2007, 10:31 PM

4:10's are greatl. Even after supercharging, I still like the fact the 4:10's are in. You will certainly like it.

kkdoughboy · July 27th, 2007, 11:02 PM

I have a Cervini C-300 with 3.55's and 20" rims along with other bolt-ons. If I step up to 4.10's what will be the effect? What can I expect? I've heard that a steeper wheel runs well with 4.10's. Is this correct? Your opinions are appreciated. Later

kkdoughboy · July 27th, 2007, 11:05 PM

Also, Can anyone tell me what my speed would be with 4.10's at around 3000 - 3500 RPM in 3rd gear? Thats where I typically like to cruise and dont want to loose that entirely. Thanks

flattusmaximus78 · July 27th, 2007, 11:27 PM

Originally Posted by acehogg69

Flat, u think it would be any diff going to 3.73's from 3.55's?

not at all...

flattusmaximus78 · July 27th, 2007, 11:28 PM

And like zippie said... driving a manual with gears will be ALOT diffen't. Either you'll love it or its ganna be a learning experience.

WIKDVNM · July 28th, 2007, 12:39 AM

I tell everyone.. if you go 4.10's ytou shouldnt be worried about fuel... 4.10's are a racing gear... You want the TQ there as sson as you put the pedal to the floor... if your more concerned about gas go witht he 373.

06RedfireGT · July 28th, 2007, 01:04 AM

i dont have to worry about shifting because my car is an auto. but the car is hardly ever on the highway, but when it is i dont want it to be at real high RPM. is anybody runnin 3.90s?

WIKDVNM · July 28th, 2007, 01:34 AM

Mine is an auto and I am running 4.10's... at 80 mph I am at 2900 RPMs

06RedfireGT · July 28th, 2007, 01:53 AM

thanks venom so it about 400rpm higher with 4.10s. not too bad at all.

1LOUDGT · July 28th, 2007, 06:44 AM

Originally Posted by 06RedfireGT

i dont have to worry about shifting because my car is an auto. but the car is hardly ever on the highway, but when it is i dont want it to be at real high RPM. is anybody runnin 3.90s?

Motive makes a 3.90 gear, I am not sure if FRPP does. I dont think anyone on this site is running 3.90 gear.

1LOUDGT · July 28th, 2007, 07:06 AM

Originally Posted by acehogg69

Flat, u think it would be any diff going to 3.73's from 3.55's?

With your mods and being a stick you'll notice a difference. But if you go with 3.73 you'll always wonder what its like to have 4.10.

forensicsteve · July 29th, 2007, 12:00 AM

4:10's are greatl. Even after supercharging

I've had a different experience. The 4.10 gears were a pain with the S/C and the stock manual. 1st gear was essentially eliminated and 2nd gear wasn't much better. I have a clutchless 3 speed manual now, so it's not so bothersome for street driving but now car cannot finish 1/4 mile in 3rd gear (1:1 ratio) since top speed in 3rd gear is estimated at about 110 mph. Scheduled for dynotune tuesday and then see how fast it will do the 1/8 but likely will need another 700-1000 rpm to finish the 1/4. That will have to wait till the new long block goes in. May work out in the long run but today...wish I had stock 3.55 gears.

July 27th, 2007, 03:31 PM	#1
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	Those of you with gears how was your fuel economy effected by gears (3.73 or 4.10). also what are your RPMs at when your goin like 80-90mph. i was on the interstate the other day and at 85 they are like 2500 with 3.33s, so what would they be like with 4.10s? __________________ ΜΟΛΩΝ ΛΑΒΕ

July 27th, 2007, 03:38 PM	#2
1LOUDGT Enthusiast 2006 GT 11.99@114 Join Date: Sep 2006 Location: Orlando, FL. Posts: 802 iTrader: 0 reviews	65-75 usually your around 2700-2800 with 4:10's. __________________ 2006 GT (Fastest) 2004 COBRA (Faster) 1990 LX 5.0 (Fast)

July 27th, 2007, 04:09 PM	#4
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	thanks for the input guys. its not as bad as i thought. __________________ ΜΟΛΩΝ ΛΑΒΕ

July 27th, 2007, 05:19 PM	#5
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,121 iTrader: 3 reviews	If you have a loud exhaust system... at highway speeds it might get on your nerves. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

July 27th, 2007, 07:20 PM	#6
acehogg69 Hardcore Enthusiast 06 GT with bolt ons I sucked Join Date: Oct 2006 Location: Cheese country!! aka WI Posts: 1,090 iTrader: 0 reviews	Flat, u think it would be any diff going to 3.73's from 3.55's? __________________ Kyle Busch Haters Club!! Member Uno! Tony wrote "Blowers blow, turbos suck, and nitrous rules!!! lol " Borla cattless L/T's topped with Flowmasters , Roush short throw, JLT2 CAI w/ X-CAL2 from Brenspeed, Bullit 18X9 and 18X10 deep dish.

July 27th, 2007, 03:38 PM	#3
Regency 2007 Hardcore Enthusiast F-150 FX4 Join Date: May 2007 Location: Memphrica Posts: 1,144 iTrader: 0 reviews	I have a manual with 4.10's but I also have 20" wheels and tall tires so it is not as steep as a true 4.10 but I love them... my car was a DOG! when it had those 20" foose wheels and 3.31 rear I get 33mpg on the interstated/highway. I know it sounds like a lie but I get it everytime! My RPM,s are around 2,250-2,400rpm going 5mph over the speed limit I believe.

July 27th, 2007, 08:32 PM	#7
Regency 2007 Hardcore Enthusiast F-150 FX4 Join Date: May 2007 Location: Memphrica Posts: 1,144 iTrader: 0 reviews	3.55's to 3.73 will be hardly any difference... go 4.10's people are so scared of the gear these days sheesh! and if it feel too steep, throw some taller rubber on it

July 27th, 2007, 10:31 PM	#9
Gunny Regular Join Date: Jul 2006 Posts: 282 iTrader: 0 reviews	4:10's are greatl. Even after supercharging, I still like the fact the 4:10's are in. You will certainly like it. __________________ 2006 GT 5 Speed Convertible Whipple HO SC (461 RWHP / 444 Torque) 4.10 Gears Pypes O/R H-Pipe Borla Stingers Cat Back Exhaust Various suspension goodies For more info, visit: http://www.themorgansite.com/Mustang/mustang_info.htm

July 27th, 2007, 11:02 PM	#10
kkdoughboy Regular Join Date: Jul 2007 Posts: 68 iTrader: 0 reviews	I have a Cervini C-300 with 3.55's and 20" rims along with other bolt-ons. If I step up to 4.10's what will be the effect? What can I expect? I've heard that a steeper wheel runs well with 4.10's. Is this correct? Your opinions are appreciated. Later

July 27th, 2007, 11:05 PM	#11
kkdoughboy Regular Join Date: Jul 2007 Posts: 68 iTrader: 0 reviews	Also, Can anyone tell me what my speed would be with 4.10's at around 3000 - 3500 RPM in 3rd gear? Thats where I typically like to cruise and dont want to loose that entirely. Thanks

July 27th, 2007, 11:28 PM	#13
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,121 iTrader: 3 reviews	And like zippie said... driving a manual with gears will be ALOT diffen't. Either you'll love it or its ganna be a learning experience. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

July 28th, 2007, 12:39 AM	#14
WIKDVNM Regular Join Date: Jan 2007 Location: Bay Area, CA Posts: 169 iTrader: 0 reviews	I tell everyone.. if you go 4.10's ytou shouldnt be worried about fuel... 4.10's are a racing gear... You want the TQ there as sson as you put the pedal to the floor... if your more concerned about gas go witht he 373. __________________ 2003 Cobra...604rwhp/548rwtq 2005 Mustang GT.. Project "Retribution" President / Founder California Mustang Club www.CA-Mustangs.com MM Cobra Club #45

July 28th, 2007, 01:04 AM	#15
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	i dont have to worry about shifting because my car is an auto. but the car is hardly ever on the highway, but when it is i dont want it to be at real high RPM. is anybody runnin 3.90s? __________________ ΜΟΛΩΝ ΛΑΒΕ

July 28th, 2007, 01:34 AM	#16
WIKDVNM Regular Join Date: Jan 2007 Location: Bay Area, CA Posts: 169 iTrader: 0 reviews	Mine is an auto and I am running 4.10's... at 80 mph I am at 2900 RPMs __________________ 2003 Cobra...604rwhp/548rwtq 2005 Mustang GT.. Project "Retribution" President / Founder California Mustang Club www.CA-Mustangs.com MM Cobra Club #45

July 28th, 2007, 01:53 AM	#17
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	thanks venom so it about 400rpm higher with 4.10s. not too bad at all. __________________ ΜΟΛΩΝ ΛΑΒΕ

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