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Old 03-03-2018, 02:33 PM   #1
baron95
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2017+ SS 1LE M6 Gear Ratios and Max Speed per Gear

Just got my 1LE last week, anxiously awaiting break-in and start of track season in the Northeast, so doing some couch racing/performance data collection.

I didn't find it posted anywhere here, so posting it for my own info, and maybe to help others.

Can someone double check that the data is correct? Do the top speeds/gear at redline match real world?

6th Gen SS and 1LE M6 Final Drive: 3.73

6th Gen SS and SS-1LE Tremec TR6060 M6 Gear Ratios (overall):
1st - 2.66 (9.92)
2nd - 1.78 (6.64)
3rd -1.3 (4.85)
4th - 1.0 (3.73)
5th - 0.74 (2.76)
6th - 0.5 (1.87)

Max theoretical speed/gear (MPH) with SS 275/35R20 rear tires (27.6in diameter):
1st - 53
2nd - 80
3rd - 110
4th - 143

5th - 193
6th - 286

For 1LE rear tire 305/30R20 (27.2 in diameter), corrected -˜1.4%:
1st - 52
2nd - 79
3rd - 108
4th - 141

5th - 190
6th - 282

Last edited by baron95; 03-03-2018 at 02:55 PM.
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Old 03-03-2018, 03:10 PM   #2
Uncle Sam
 
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I haven't been able to get to 282 MPH in 6th yet.
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Old 03-03-2018, 03:30 PM   #3
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On my way to Mexico to attempt the 282 ��
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Old 03-03-2018, 07:28 PM   #4
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Your gear ratios appear correct for M6 from what I researched. Also, it’s difficult to find top speed as it is not was not included in below testing nor was a manufacture estimate. But, if I recall correctly from what I’ve read in the past, top speed for SS 178 mph (someone did a YouTube video hitting this mark); 1LE is 173-174 mph. ZL1 is 198 mph. Top speed for at least the V8 Camaros is limited by aero (wind resistance) and not achievable in highest gear for any of the transmissions (completely stock).

What I found from auto magazine testing (SS 1LE):
Motor Trend

Motor Trend Car & Driver Automobile

0-60 4.1 4.1 4.2
1/4 mile 12.5 @ 115.2 12.4 @ 116 n/a
Braking 93 ft (60-0) 141 ft (70-0) 107 ft (60-0)
Lat. g. 1.12 1.05 1.02

Disclaimer: Information based on credited resources. Please excuse the appearance of my rough table above. I just hope I could help on this topic. My personal preference for testing results is Motor Trend.
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Old 03-03-2018, 07:59 PM   #5
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FYI, my previous post did not load with the way I formatted it regarding test result numbers, so just read left to right per magazine source respectfully. Sorry for the mess.
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Old 03-03-2018, 08:03 PM   #6
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Good info. Thanks baron95 and HYPER1LE.
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Old 03-03-2018, 08:27 PM   #7
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Per John Hennessy completed with a standard SS, I'm assuming completed on a closed track. He doesn't wind it out to red line in each gear but gives and idea of speed per gear (1st-4th and much of 5th).


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Old 03-04-2018, 09:06 AM   #8
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What part of New England are you from? I am from the real upstate NY 1 hour south of border.
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Old 03-04-2018, 02:05 PM   #9
baron95
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Quote:
Originally Posted by 17Blk1LE View Post
What part of New England are you from? I am from the real upstate NY 1 hour south of border.
CT - Close to Westchester County.
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Old 03-04-2018, 02:10 PM   #10
baron95
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Quote:
Originally Posted by Uncle Sam View Post
I haven't been able to get to 282 MPH in 6th yet.
I did say theoretical - but I'm sure someone will come in and say that with a built motor, nitrous, FI, etc they can get to it - LOL.

It is good to post the speeds to show how nearly useless 6th gear is. On a track-oriented car, I'd like to see Vmax to be reached at max power RPM (6,000 in this case) in the tallest gear and all the other gears equally spaced down from there.

But instead we get hugely tall gears for fuel economy. It makes it less fun on track, since for most tracks you will be in 3rd/4th with very few shiFts. Oh well.

Last edited by baron95; 03-05-2018 at 03:17 AM.
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Old 03-04-2018, 05:46 PM   #11
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Quote:
Originally Posted by baron95 View Post
I did say theoretical - but I'm sure someone will come in and say that with a built motor, nitrous, FI, etc they can get to it - LOL.

It is good to post the speeds to show how nearly useless 6th gear is. On a track-oriented car, I'd like to see Vmax to be reached at max power RPM (6,000 in this case) in the tallest gear and all the other gears equally spaced down from there.

But instead we get hugely tall gears for fuel economy. It makes it less fun on track, since for most tracks you will be in 3rd/4th with very few shits. Oh well.
Sounds like a dietary issue.
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Old 03-05-2018, 03:17 AM   #12
baron95
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Quote:
Originally Posted by Boost Creep View Post
Sounds like a dietary issue.

Ooops - sorry. Fixed.
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Old 03-05-2018, 06:20 AM   #13
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Quote:
Originally Posted by baron95 View Post
Ooops - sorry. Fixed.
lol
just messing with you.
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Old 03-05-2018, 02:28 PM   #14
mjk3888
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if you click the link in my signature to my youtube, I have video how 1-4th and 5th up to 147mph @ Charlotte Roval track night. That video is stock SS 1LE on OEM Goodyear Supercar 3's If I recall I was having to grab 5th somewhere in the 130's
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