3.73's in an a4 lower shift points?

**bpopham22** · 03-22-2010, 06:15 PM

im going to put 3.73's in and i was just curious if anyone out there has them....does it lower ur shift points? instead of 1st at 40 mph will it be 25-30? id like to know all the shift points if anyone knows them

**67CamaroRSSS** · 03-22-2010, 07:42 PM

3.73's are the most common gear ratio upgrade in an A4 car. I don't remember if it changed the shift points as it's not my DD. I did it cuz it was a GU2 code (2.73). When I installed a 3400stall TC it didn't matter anyway. What it will affect most is your top end speed.

**0rion** · 03-22-2010, 08:43 PM

the short answer is yes....it'll lower your shift mph. I'd have to look at my tune to see exactly where I have mine set to shift but I believe it's low 20's vs 40ish for stock on the 1-2 shift at wot. I'm also shifting at 6500 rpm too though and I had to play with all those numbers quite a bit after the stall to get it to shift where I wanted it.

**joedude02** · 03-22-2010, 09:27 PM

when i had my 3.73's, i could ring out 1st to 35ish, 2nd to 75ish 3rd at near 135/140mph. shift points at 5900rpm

this was with the stock converter

**0rion** · 03-22-2010, 09:44 PM

Originally Posted by joedude02

when i had my 3.73's, i could ring out 1st to 35ish, 2nd to 75ish 3rd at near 135/140mph. shift points at 5900rpm

this was with the stock converter

there ya go...take his answer. I mainly just ballparked the mph and then used my rpm's to set my shift points.

**oldmanZ28** · 03-23-2010, 04:49 AM

http://www.f-body.org/gears/

**RyanJM** · 03-28-2010, 12:57 PM

I swapped from the stock 3.23 to a 3.73 and it does lower your shift mph and top end speed but it's alot more fun to drive and I still get decent gas mileage. My car didn't come with 2.73's so you should notice a bigger difference than me. I still have the stock stall for now but set my shift points at 6100 rpm till I do the cam and get some new springs. My car runs about 2500rpm at 70.