Differential Upgrade
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Instructor
Joined: Dec 2016
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From: Chestertown Maryland
Differential Upgrade
im going to upgrade the differential in my 05 M6 to the 06 and later case. I will be installing 4:10 gears so I will need to re calibrate the speedo. Can this be done with a Tech2 or does it have to be HP Tuners. Also does the Vehicle Speed Sensor transfer over to he late model case or do I need to get a different one for the later case.
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St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
im going to upgrade the differential in my 05 M6 to the 06 and later case. I will be installing 4:10 gears so I will need to re calibrate the speedo. Can this be done with a Tech2 or does it have to be HP Tuners. Also does the Vehicle Speed Sensor transfer over to he late model case or do I need to get a different one for the later case.
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From: Houston, Texas
RPM Stage 4 rear diff with 4:10 gears in an 05 M6 Coupe. All the above are correct, no need to re-calibrate the speedo. This is the best upgrade as far as making this car fun to drive!! Also during cruising it makes using the cruise control so much better.
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Instructor
Joined: Dec 2016
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From: Chestertown Maryland
Thanks for the feed back on the 4:10 rear being a good choice I have been wrestling with the decision about what gear to put in it. It is primarily a street car and I'm a old Drag Racer so I plan to make some passes next year. My main concern is the 2.97 1st gear that just seems huge for a 4:10 rear but everyone says they like the car with 4:10's so what the $%#&.
Sorry Forgot to add the quote
Sorry Forgot to add the quote
Last edited by Fly N Low; Nov 27, 2018 at 09:02 PM.
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Thread Starter
Instructor
Joined: Dec 2016
Posts: 209
Likes: 42
From: Chestertown Maryland
Thanks for the feed back on the 4:10 gear. I've been wrestling with the idea of gearing and thought maybe 4:10's would be to much with the 2.97 1st gear but everyone I've talked to says they like it. This is primarily a street car but I'm a Drag Racer from the old days and I want to make some passes with this car next year.
Thread Starter
Instructor
Joined: Dec 2016
Posts: 209
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From: Chestertown Maryland
Will you be down at MIR Friday. Hopefully it wont rain I would like to get the chance to meet some of you guys. I was talking to Arnold before the last time when you guys got rained out. Just heading down to check it out.
Thanks Rick
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Thanks for the feed back on the 4:10 gear. I've been wrestling with the idea of gearing and thought maybe 4:10's would be to much with the 2.97 1st gear but everyone I've talked to says they like it. This is primarily a street car but I'm a Drag Racer from the old days and I want to make some passes with this car next year.
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As of right now, it's still on and yes I'll be feeding everyone there. Come out and see us.
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From: Bay Area Ca.
MY change was to 4:10 also, love it still after 10 years.
Granted 1st gear is a quick shift, I usually shift around, 500 rpm give or take a few hundred.
I can easily start out in second if I want but rarely do.
I also enjoy downshifting for braking, and yes I know it adds additional wear but I drive the C6 for fun. The 4:10's are wonderful for this. Also I am usually not in higher rpms either when downshifting.
Kinda of a lightweight being 70 yrs now.
Granted 1st gear is a quick shift, I usually shift around, 500 rpm give or take a few hundred.
I can easily start out in second if I want but rarely do.
I also enjoy downshifting for braking, and yes I know it adds additional wear but I drive the C6 for fun. The 4:10's are wonderful for this. Also I am usually not in higher rpms either when downshifting.
Kinda of a lightweight being 70 yrs now.
Last edited by Boomer111; Nov 28, 2018 at 01:52 PM.