3.42 or 3.73?
Racer
Joined: Sep 2001
Posts: 429
Likes: 0
From: Rocky Mount NC
Re: 3.42 or 3.73? (SoulDr)
SoulDr,
I've replied in the other post. Definately 3.73's. On the highway, expect the rpm's to run about 350 higher than they are now. Gas mileage for me is averaging about 20-21 mpg, depending on how much "fun" I have on the way. As Mitch said, the biggest difference is on a roll. I can't stomp it from a stop without burning the tires off it. :smash:
I've replied in the other post. Definately 3.73's. On the highway, expect the rpm's to run about 350 higher than they are now. Gas mileage for me is averaging about 20-21 mpg, depending on how much "fun" I have on the way. As Mitch said, the biggest difference is on a roll. I can't stomp it from a stop without burning the tires off it. :smash:
Le Mans Master
Joined: Sep 2001
Posts: 8,840
Likes: 43
From: State of Confusion.
Re: 3.42 or 3.73? (SoulDr)
For the guys with the 3.73's, what kind of RPMs are you turning at 85 mph? This is a very informative post, as I'm doing this in the spring, and already bought my 3.42's, but could resell them and get 3.73's. I do quite a bit of highway driving, and don't want the car to be screaming down the highway. Thanks
[Modified by LuvmyC5, 10:19 AM 12/25/2003]
[Modified by LuvmyC5, 10:19 AM 12/25/2003]
Racer
Joined: Mar 2003
Posts: 334
Likes: 0
From: Warren OH
Re: 3.42 or 3.73? (indypace78)
Just went from 3:15's to 3:42's..
NO discernible difference at all...
Am I happy with the 3:42?
Well.... if 3:42's were supposed to "wake up" my car, then all I have to say is its still :sleep: .
Maybe 3:73's will be the alarm clock.....
My advice.... would be do the 3:73's, because going from 3:15's to 3;42's, i doubt you'll feel anything at all.. I know I sure didn't... :cry
NO discernible difference at all...
Am I happy with the 3:42?
Well.... if 3:42's were supposed to "wake up" my car, then all I have to say is its still :sleep: .
Maybe 3:73's will be the alarm clock.....
My advice.... would be do the 3:73's, because going from 3:15's to 3;42's, i doubt you'll feel anything at all.. I know I sure didn't... :cry
I plan on getting the retrofit Magnuson intercooler and blower cam from LPE in the spring. I'm hoping with the HP I'll be pushing after those mods that I'll be glad I didn't install 3:73's for the sake of traction, but as far as right now -- I'm regretting it. Not much difference over the 3:15's at all in my opinion. I installed a Yank SY3500 at the same time the 3:42's went in and obviously there is a difference out of the hole, but nothing noticable on a roll...
[Modified by SilverC5inOhio, 3:54 AM 12/25/2003]
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Le Mans Master
Joined: Sep 2001
Posts: 8,840
Likes: 43
From: State of Confusion.
Re: 3.42 or 3.73? (SoulDr)
Did you guys do converters too? If so, did ithe 3.42's help keep the converter from feeling too loose? Also, do the 3.73 gears rev out a lot on the highway? Thanks and Happy Holidays!!!
Instructor
Joined: Jul 2001
Posts: 199
Likes: 0
From: Canada Ontario
Re: 3.42 or 3.73? (Face)
2000 A4-SY3500--Transgo shift kit--4.10-Heads and cam car Lt headers
68mph rpm 3.42-2100---4.10-2500
75 mph rpm 3.42-2300---4.10-2700
I started with 2.73 --jumped up to 3.42 great choice--then switched up to 4.10 breath taking experience.
gotta love the sound now of the Corsa Indys ---need ear plugs at 80 mph
Hope this helps
I :cheers: :D :D :seeya
68mph rpm 3.42-2100---4.10-2500
75 mph rpm 3.42-2300---4.10-2700
I started with 2.73 --jumped up to 3.42 great choice--then switched up to 4.10 breath taking experience.
gotta love the sound now of the Corsa Indys ---need ear plugs at 80 mph
Hope this helps
I :cheers: :D :D :seeya
Le Mans Master
Joined: Jan 2003
Posts: 6,427
Likes: 0
From: houston texas
Re: 3.42 or 3.73? (WHY2KRAG)
i went from 2.73's to 3.42's and like it. if i could do it over i would go 3.73's or even 3.90's i spend a lot of time on the track. do it right the first time. :thumbs:
Pro
Joined: Jul 2003
Posts: 570
Likes: 0
From: Fast Car Tx
Re: 3.42 or 3.73? (MC TORCH RED)
i went from 2.73's to 3.42's and like it. if i could do it over i would go 3.73's or even 3.90's i spend a lot of time on the track. do it right the first time. :thumbs:
Burning Brakes
Joined: Apr 2003
Posts: 789
Likes: 0
From: BF Egypt Tx
Re: 3.42 or 3.73? (LuvmyC5)
For the guys with the 3.73's, what kind of RPMs are you turning at 85 mph? This is a very informative post, as I'm doing this in the spring, and already bought my 3.42's, but could resell them and get 3.73's. I do quite a bit of highway driving, and don't want the car to be screaming down the highway.
If I spent the majority of my road time on the highway between cities, I would probably go with the 3:42's...but I don't...I spend the majority of my road time cruisin' the highways and bi-ways of the DFW area...pretty much staying local for the most part, so I would never change my 3:73's for anything else, with the possible exception of 3:90's. I am cool with road trips, since I remain at 70mph for long trips or 75mph for short trips. There is a performance difference with the 3:73's that I'm not willing to give up. Remember, you have to give something, to get something in this deal. Just my two cents. Good luck on your decision!! :chevy
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Re: 3.42 or 3.73? (dads01dream)
Would you all still select 3.73's if you had a blower? I've been hearing for an s/c car you really need to keep it down to 3.42's.... Any suggestions? :lurk:
I'm sure someone will correct me if I'm wrong but thats just my opinion :cheers: