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Thread: 3.42 tp 4.10 swap!!!
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05-07-2008, 07:29 AM #1
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- Apr 2007
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- Decatur, IL
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- 42
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Blue- 2001 Trans AM
3.42 tp 4.10 swap!!! Driveability ???
MY 2001 TA has the t-56 6 speed and i ordered a set of 4.10 gears and the intall kit last night, however my dad thinks that puting in 4.10 gears is going to kill the way my car drives. Is this correct? it seems like alot of people put in 4.10 gears that have a t-56. This car is a weekend hot rod not a daily driver and may one day see a track but not often. This step is also preliminary to my cam install i will be doing soon
Thanks for the helpLast edited by a338566; 05-07-2008 at 07:57 AM.
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05-07-2008, 07:56 AM #2
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Light Pewter Metallic- 2000 Camaro SS M6
If it were your daily driver or your weekend driving frequently involved long highway trips, then your dad's thoughts would have some merit concerning fuel mileage. As a weekend hot rod, it will greatly enhance the way it drives... and your pleasure from driving it.
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05-07-2008, 08:01 AM #3
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05-07-2008, 08:02 AM #4
- Join Date
- Apr 2007
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- Decatur, IL
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Blue- 2001 Trans AM
what am i looking at for RPM's at 70MPH w. 4.10, i am currently about 1750 ish w/ 3.42
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05-07-2008, 08:07 AM #5
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05-07-2008, 08:14 AM #6
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Light Pewter Metallic- 2000 Camaro SS M6
Approx. 2200
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05-07-2008, 08:21 AM #7
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- Sep 2007
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- Denton, Texas soon Lafayette, Louisiana
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Blue- 2002 Z28 Camaro M6
http://www.f-body.org/gears/
One of the great things about a six speed is that changing gears does not affect your highway gas mileage much. In the lower gears you will notice a big difference, and depending on how you drive you might find the car gets better mileage (rare, but for some people it does happen).
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05-07-2008, 08:34 AM #8
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05-07-2008, 12:27 PM #9
- Join Date
- Mar 2007
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- Gainesville, VA
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- 654
I've found nothing negative about this swap. I get only 1mpg less around town and almost the same on the highway. I'm not shifting anymore because I find myself skipping gears more often. Traction is even worse now but it was a problem before too. I'm right around 2k at 70mph and my speedo has been corrected.
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05-07-2008, 12:29 PM #10
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- Mar 2007
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- Gainesville, VA
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- 654
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05-07-2008, 12:43 PM #11
From a driveability standpoint, 4.10s will really wake your M6 up. Your city mileage shouldn't be negatively impacted (you will simply use 5th and 6th gear more often) and your highway mileage may see a nominal decrease. I was concerned about the loss of fuel efficiency when I was contemplating my gear swap, however that turned out to be a complete non-issue.
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05-07-2008, 12:54 PM #12
not to thread jack but how much of a gas mileage impact would a swap to 4:10s have on an A4?
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05-07-2008, 02:05 PM #13
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05-07-2008, 03:14 PM #14
- Join Date
- Oct 2007
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- hixson tennessee
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- 33
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- 1,641
white- 94 camaro z28
I got about 13-15 when I had them on there for all of 2 days, before I took it back to the shop and had them put a 2.73 in there with another used differential. it was the same cost at the shop I went to and it had a 21 day warranty and all that I was happy and it was absolutely sick, but it was horrible on gas.
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05-08-2008, 05:25 AM #15
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05-08-2008, 05:42 PM #16
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- Aug 2005
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- washington, dc area
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- 10
Black- 2002 Firebird
I'd stick with the 3.42 gears if you are going to do any mods at all. I had 4.10's but went back to the factory 3.42 gears as I added the mods and couldn't be happier.
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05-08-2008, 05:53 PM #17
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- Aug 2006
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- Madrid, Iowa
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- 50
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- 304
red- 02 trans am ws6
I had 4.10s installed just lastnite, speedo isn't corrected yet but its around 1750 at 65 with a 6 speed. Did I notice any difference? I'm not sure. Mines a daily driver with 275/40/18s on the back. I am modded too.
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05-09-2008, 05:31 AM #18
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05-11-2008, 08:14 PM #19
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05-13-2008, 04:39 AM #20
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- Nov 2007
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- Oregon
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- 37
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Sinister, SixGun- 2001 SS, 2002 L36 M5
did you order the cross pin for your rear end?
someoen correct me, but on that series carrier, it takes a special cross pin when swapping to 4.10's and lower?
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