3:73 vs 3:90
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Joined: Aug 2005
Posts: 98
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From: Milan Michigan
3:73 vs 3:90
Just purchased a reconditioned getrag rear end with a new 3:73 ring and pinion newly installed but was rethinking about a 3:90 instead anyone with opinions on the 2. Car is mainly a weekend cruiser ocasional dragstrip.
Thanks. Bob
Thanks. Bob
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Bob; you need to include certain key info in order fro others to give their opinions.
A4 or 6 speed ?
degree of current mods?
plans for future mods?
I looked at your profile and you don't have the tranny type listed there either.
Throw us a bone here...
A4 or 6 speed ?
degree of current mods?
plans for future mods?
I looked at your profile and you don't have the tranny type listed there either.
Throw us a bone here...
Racer
Joined: Dec 2003
Posts: 331
Likes: 1
From: Black Forest Colorado
Originally Posted by cenzo
Keep what you got. There's not enough difference to make a difference.
Not enough difference, if you already have the 3:73's, 'I'd hold what you got', I personally went with the 3:90's.
Safety Car
Joined: Jun 2005
Posts: 3,775
Likes: 0
From: St Marys GA
Originally Posted by COLORADO FRC
Not enough difference, if you already have the 3:73's, 'I'd hold what you got', I personally went with the 3:90's. you probably won't see much difference on your occasional trip to the track, and you will get slightly better mileage. Plus replacing the gearset is just another opportunity to induce problems. DBD
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Melting Slicks
Joined: May 2005
Posts: 3,461
Likes: 161
From: Las Vegas Nevada
St. Jude Donor '08
4.10's or don't bother. Recently changed to 4.10's and it feels like 75 more hp. A real kick in the A$$. You will love them, and many members will tell you it is the best mod you can do. By the way, what is traction, I don't have it anymore 
?
Clayton
?Clayton
Race Director
Joined: Jul 2005
Posts: 11,308
Likes: 1
From: The Beautiful Greater Bay Area California
For more of a daily driver, and, not a true dedicated drag car: I offer another vote for the 3:73. The 3:73's are a great all around gear (regarding SOTP impression, acceptable mileage, and, top end) that is o.e. on the new C6 Z06.
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
If given a choice I would go with the 3.90s for sure, but as others said here since the housing unit is already set-up, i don't think its worth the $ to go to 3.73 to 3.90 as its not a bid step up, and if you decide to do it, then do it right and go all the way by puting in a 4.10 gear!
That might be worth the added $! 
That might be worth the added $!
