3.7L V6 Technical DiscussionsAny questions about the new engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!
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I have two Mustangs a 2001 GT with too many mods to list: 420hp and 404tq, and a 2012 base M6 V6. My '01 has 3.73 gears. I had my tuner install 3.73 FRPP gears on my V6. They are whisper quiet and make a huge difference to the car. Power in every gear at every rpm, with a loss of about 3 mpg city. I seem to remember someone on this thread saying 3.73's were to low for this car. They could not be more wrong. These were the gears that were meant to be on this car. This should be your first mod. I have a sct3 tuner for the speedo correction and I will probably just do light bolt-ons for this car becasue this is my winter car. I currently have the 87 octane Bama street tune on the car and winter tires on stock rims. I got a deal on a set of 2012 GT take-off 19" rims with tires for $700 (2500 miles) for the summer. They are the ones painted black on the inside and brushed aluminum on the outside "spokes". I think I went off on a tangent. Anyways, if you are thiking about gears, get 3.73's and have them installed by a pro. You will not regret it.
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Is the 2012 V6 an automatic? What tires are you running this winter?
2012 Mustang Premium 6 speed Manual
Starkey Fog Lights
5 spoke chrome American Muscle 18" x 9" wheels
Nitto 255/45ZR18 Tires
H&R Sport Front and Rear Sway Bar
J&M lower control arms
TMI adjustable tilt headrests
Gaslock LED Shift ****
Shelby door subs
Sony 200W amp
When someone types M6 V6, the M6 means manual 6 speed. I am running Mastercraft Glacier Grip II, 215/60/17 M+S. They are almost the exact same height as the summer wheels and tires I am putting on in the summer 245/45/19 Pirelli's. I got them at Belle Tire for like $500.
So how does the V6 with the gears compare to the 2001 GT? Just curious.
Well, pretty similar, minus the power of course. Sometimes, you have to feather first when starting off (which you get used to) but all the other gears are just so much more usable. I love rowing a shifter but the 2.73 gears were ridiculous. Now there is power in most gears at most rpms. Just really transforms the car.
I haven't really hit on the car much, but from a u-turn yesterday, I'm 90% confident that the power of the gears will let 1st spin from pedal in any speed. Second seems to be a little more refined, almost between a "normal" gear ratio and a low gear.
Lots of F-Bodys and now...
'12 Sterling Gray 5.0 M6 w/ Brembos, 3.73 gears, Borla S-Type catback, Airaid Intake, dyno tune, and 15% tint
Faaaaawk! Got the gears installed along with J&M LCAs this morning. 3.73 gears should be part of the Performance Package or maybe even an upspec option of that package from the factory. I love how the car responds, I wish I did this sooner. With hindsight being 20/20, 3.73 gears should have probably been my first mod. That's how significant the change is to me. Worth every penny of the $489 I paid.
ya, you want to avoid wot runs for a while. i know its hard to do. you want to make short runs letting the gears warm up then cool down. i did that for the first day, but then had to run on the highway to work the next, mine have been fine. then you want to change the gear oil around 500 miles.
05 V6 torch red coupe, "The V6inator" auto, jlt cai, 93 bama/sct, demon/livewires, bbk tb, udp, oil catch can, stainless shorties, jba stainless h pipe, gt muffs, 7.5 frpp t lok 3.73 gears, upr control arms, tci shifter, 255/50, 275/50, amustangrocksleather custom leather armrest and e brake cover
My installers, (http://www.ringpinion.com/ outside of Seattle) who do nothing but gear work, were pretty insistent on it. You can find all sorts of resources online about it. A break in period generally consists of letting the rear cool down after the first 20 miles driven. Then no heat generating actions (long sustained trips, or hard accelleration), for the first 200 to 400 miles. Changing the gear oil right after the break in period is also recommended.
I'm convinced the worst thing about the gear change process is that break in process. It's painfully to stay off of it for those first few hundred miles
Never heard of the long break in period. Have had half a dozen gear changes on cars and break in period has been going easy for about a dozen miles. Also, never heard of changing the oil at 500 miles. I have never had ANY problems with gears over long periods of owning them. My tuners has also done thousands of gear changes.
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