gearing a c5
Thread Starter
Joined: Dec 2007
Posts: 93
Likes: 0
From: IN THE OILFIELD,TX
gearing a c5 ive got an 01 c5 a4, has the 3.15's....trying to decide between 3.73's or 3.90's, just looking for a few other opinions before i spend 2k for a diff.
Thread Starter
Joined: Dec 2007
Posts: 93
Likes: 0
From: IN THE OILFIELD,TX
about 50/50, technically its my dd but unless its cold or rainy im usually on my bike and im building a ss m6 thats going to be my new dd, im going with an ms4 cam, yank ss 4000 stall, so really want the gears to compliment the whole set up
Staging Lane
Joined: Feb 2008
Posts: 50
Likes: 0
From: Kentucky
3.90s will be pretty intense with the A4. If you do a lot of tracking then maybe, but if you split time I'd say you would get better service out of 3.73s or maybe even 3.42s. If you plan on going high hp down the road you'll probably regret the 3.90s. Generally the 3.90s make more sense for the Mn6 guys. Just my 2 cents.
Here's a little spreadsheet to help you figure out what you want. I did 3.42s in my A4 coupe. 3.73s would have been ok, but for me 3.90 was way out of the question.
I had to zip it to upload it here. If you don't feel comfortable with zip files, send me your email in a PM and I'll send you the xls file.
I had to zip it to upload it here. If you don't feel comfortable with zip files, send me your email in a PM and I'll send you the xls file.
On The Tree
Joined: Feb 2006
Posts: 131
Likes: 0
From: rome
well I put a 373 gear in my car but I also did stuff to make it hook up like q a1 and 90 10 shocks in the front so if your going to do nothing to make your car hook up better then I would keep a 3.42 gear but if your going to do some shocks and stuff like that go with a 3.90 Im fixing to go to a 3.90 and Im over 700 rwhp . The point is if your going to drag race u want to go threw the traps in 3rd in a auto about 200 rpms below the rev-limter
Trending Topics
Thread Starter
Joined: Dec 2007
Posts: 93
Likes: 0
From: IN THE OILFIELD,TX
yea ive kinda been leaning towards the 3.73's, and i am planning on other parts to help hook up like the coil overs and all, im still kinda new to the c5 thing so not really sure the best suspension set up to go with for traction....
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo On The Tree
Joined: Feb 2006
Posts: 131
Likes: 0
From: rome
keep it simple do q a1 in the back I usually set them at 3 put some 90 10 shocks on the front take the front sway bar out for the track get u a good set of slicks and your set I turn 1.40 60 ft all day long
Teching In
Joined: Mar 2006
Posts: 10
Likes: 0
3.90s will be pretty intense with the A4. If you do a lot of tracking then maybe, but if you split time I'd say you would get better service out of 3.73s or maybe even 3.42s. If you plan on going high hp down the road you'll probably regret the 3.90s. Generally the 3.90s make more sense for the Mn6 guys. Just my 2 cents.
with the 4000 stall, there is not a huge gain from switching gears. It will make the stall more liveable with 3.73s, but I'd hold off and put the money elsewhere for now.
