Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
05-26-2008, 09:27 PM
#1
Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
I'm planning on upping the gearing in my car from stocker 3.23's to a set of 3.73's. What can I expect? I realize I'll lose highway mileage, but I'm assuming I'll gain around town mileage, as well as the car feeling torqier around town? Will it have more get-up and go going up hills? Are 3.73's my best bet with the 3.1, or should I got steeper or smaller? I do a lot of mixed driving, but most of it is around town, and hilly country roads. Just looking for a way to make this thing feel a little more torqy and fun.
PS:
Would this be the motive gear that'd work with my rear-end?
http://store.summitracing.com/partde...875373&FROM=MG
PS:
Would this be the motive gear that'd work with my rear-end?
http://store.summitracing.com/partde...875373&FROM=MG
05-26-2008, 09:52 PM
#2
Supreme Member
iTrader: (1)
Join Date: Feb 2004
Location: High plains of NM
Posts: 1,040
Likes: 0
Received 1 Like
on
1 Post
Car: 89 Firebird
Engine: L98
Transmission: T-56
Axle/Gears: 3.73
Re: Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
I had 3.42's in my 2.8 and wouldn't want any thing but. Also the 85's had a nice gear range in the transmission.
It will throw off your speedometer and odometer.
I believe your car has a serries 3 carrier. I know cars that had 3.08's like my Z28 have serries 2 carriers.
It will throw off your speedometer and odometer.
I believe your car has a serries 3 carrier. I know cars that had 3.08's like my Z28 have serries 2 carriers.
05-26-2008, 10:47 PM
#4
Supreme Member
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
ur car will love 3:73's u will ahve an 500 rpm diff in each gear, the gear swap will make a world of change in intown driving.prolly even get better milage intown and lose about 2 maybe 3 highway
05-27-2008, 02:25 AM
#5
Re: Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
Thanks Dave! That's what I was thinking, I just wanted to hear it from someone else. As far as the gear set, is the one I liked the right one for the stock rear-end? I'm basically buying the gears and the install kit and tossing it off to a shop for the install. Also where could I find the right speedo gear so my speedo isn't off?
05-27-2008, 06:33 AM
#6
Supreme Member
iTrader: (1)
Join Date: Apr 2008
Location: Utah
Posts: 10,401
Likes: 0
Received 2 Likes
on
2 Posts
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Stock 92 3.1 moving from 3.23 gears to 3.73's. What can I expect?
yup u need a 3 series gear set, be sure u get the install kit, and make sure u do not get ripped off on the install.and make sure u go to a reputable rear end shop. it is so easy to destroy a brand new gear set if improperly setup.
to give u an idea of what is fair my shop gets 300$'s labor only to do a rear in a car.+ parts,and make sure u get a warranty in writing, ive seen to many ppl goto a shop get gears put in and have them get told it has a warranty only to have the rear blow up 2 weeks later and the shop not warranty the work.
to give u an idea of what is fair my shop gets 300$'s labor only to do a rear in a car.+ parts,and make sure u get a warranty in writing, ive seen to many ppl goto a shop get gears put in and have them get told it has a warranty only to have the rear blow up 2 weeks later and the shop not warranty the work.
Thread
Thread Starter
Forum
Replies
Last Post
UltRoadWarrior9
Tech / General Engine
336
04-28-2020 10:39 PM
ZZ3Astro
Power Adders
1045
08-13-2019 12:57 AM
Zeek1041
Theoretical and Street Racing
12
09-30-2015 11:00 AM
