I have a friend that works at a Ford dealer and just happens to have a set of 3.73's, That is he is going to install in my car for a hundred bucks out the door!!! I couldnt say no!! My car is a 07 5speed. How do these car run with a better gear? I know 4.10's would be the better choice, but its such a good deal for the 3.73's. Also what rpm will i be turnin at 70? Also can dealers correct my speedo with out a programmer? Or is this something i will have to fix with an aftermarket tuner?
3.31's to 3.73's
- Thread starter slammed89swb
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kooldawg6
mine works really well and can take a fair amount
The dealer needs to reprogram your computer/speedo for the gear swap. @ 70 in OD(auto), I run about 2500 RPM with 4.10s. That should put the manual just a bit over 2000 with the 3.73s I'm guessing. Awesome deal, but I think I'd still pay the full amount for the 4.10s
He mentioned he had an '07, so 3.31 was the stock gear. Only way he has 3.55's is if he had the $100 option for 3.55s (which went up to $300 for '08!)
Hoodlum
New Member
Its still my wifes daily driver and will be for at least 4 or 5 more years, so we will still be takin it over the road once in a while i just figured for the money.... and for what we are going to do with it, i think it will be a good medium. I have to go ahead and buy her an axle back with all the money i saved on the gear install. I was thinkin about MAC, I had some on my 94GT and loved the sound. How do they sound on these newer cars?
PUNISHER RACING
Active Member
I had the 3.73's and didn't really notice that much of a difference still got 25 mpg though, they are currently being pulled and the rear suspension done in favor of 4.30's.
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