Don't Look Back

Hey guys, I am currently running 13.9's with my mods (sig) and 2.73's. I'm planning on putting in 3.73's before the season starts in 2 weeks. Assuming traction, and a flawless run, what kind of gain can I look for? Thanks.

WS Sick

If you can pull a good 1.9 or lower you'll gain at least 2 or 3 tenths and a few mph.

JustaLT1

I went from 13.98 to 13.62 switching from 2.73's to 3.73's. My mph picked up 1 or 2 mph, but it was mostly ET that I gained. My 60' dropped to high 1.9's from mid to high 2.0's. I just ran Nitto drag radials and never spun. Definately worth the swap. Good luck!

Don't Look Back

Thanks for the replies, on a side note, if any of you guys are running 3.73's in an A4, what do you tach when cruising on the highway (70-80MPH)?

JustaLT1

I generally run about 3,000 rpms at 80 mph.

Robert95z

i gain 2.5 tenths and almost 2 full mph

Steve Y

More like 2700 rpm at 80.

firepheasent

I gained the same thing!

DB75

3,000 at 80 mph
2,600 at 70 mph

Steve Y

Try this: http://www.f-body.org/gears/ It does not agree.

JustaLT1

Why don't you try and listen to someone who has 3.73s in an A4 and knows what they're talking about? I don't care what that link says....I know what RPMS I'm turning at 80 mph. You don't Mr. Knowitall.

Steve Y

The link is right, you are wrong. Deal with it. Maybe your tach or speedo is off. Maybe you don't have a .70 o.d. gear or 3.73 rear end gearing.

JustaLT1

Dude, I have a stock A4 transmission AND 3.73 gears and I've had my speedo recalibrated. Funny how someone else with an auto and 3.73s has said the same thing I have....yet no one has agreed with you. Perhaps if you actually HAD the setup that was being talked about...your argument might hold some water. But you're pointing to a calculator on the internet saying that you are right. This is the same calculator that says I should be doing 117 in 3rd gear at 5700 rpms. WRONG! Now go sit in the corner, dumbass.

Quote from the calculator's site:

GUMP

Maybe you should include tire diameter in your comparisons?

Daren

DB75

I hear ya JustaLT1. This guy has an answer for everything. He doesn't even drive an f-body. Hey Steve Y, I think you need to spend more of your time over at the Corral.