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Old 05-30-2013, 04:14 PM   #1
LuckyZL-1
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Gearing

Forgive me if already addressed but is it just me that gets the feeling like my M6 car could use a little taller gearing?? It just feels like 1st gear is more like a granny gear, makes me almost want to take off in 2nd but its too tall. 6th at highway speeds could use a couple hundred drop in rpms also. If I feel like this now I wonder how I'll feel after doing some major mods and gaining a lot of HP. (ADM) Anyone know of anybody who has addressed this or am I just nuts??
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Old 05-30-2013, 04:57 PM   #2
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you could drop in the auto rear end... that would make the gears a lot taller! and would probably give you top speed in fifth. Not sure what the acceleration would do...
(also not sure if this is possible/feasible)

Stock manual at 6200rpm
1st 52.8
2nd 78.9
3rd 108.1
4th 140.5
5th 175.6
6th 223.0
reverse 48.4
(final drive ratio is 3.73)

with auto rear end:
1st 61.0
2nd 91.1
3rd 124.8
4th 162.2
5th 202.8
6th 257.5
reverse 55.9
(final drive ratio is 3.23)
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Old 05-30-2013, 05:40 PM   #3
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That's what I was wondering. If there are any halfway options out there. A friend of mine who runs Prostock mentioned he once geared his a little taller when he discovered that his car actually run a couple of tenths faster when he took off in 2nd. After he re-geared it (4speed) he would drag as a 3 speed and use 4th as highway gear. I just figured it wouldn't hurt to ask around I'm just thinking out loud with my fingers today.
I may not be smart but I'm always thinking.
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Old 05-30-2013, 05:47 PM   #4
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3.42 or 3.55s?
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Old 05-30-2013, 06:07 PM   #5
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Could take 3.45s from a V6
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Old 05-31-2013, 11:00 AM   #6
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Could take 3.45s from a V6
Different ring and pinion gear size? Not sure of availablity of different gears for the ZL1 rear.
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Old 05-31-2013, 11:05 AM   #7
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I put the zl1 rear in my SS about 2 months ago. As of then there were no gear options. Just stock 3.73, and 3.23.
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Old 05-31-2013, 02:18 PM   #8
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I put the zl1 rear in my SS about 2 months ago. As of then there were no gear options. Just stock 3.73, and 3.23.
That figures have to let the aftermarket guys catch up.
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Old 06-02-2013, 05:02 AM   #9
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I'm in the same boat (zl1 m6). looking for a way to make 1st a little more useful with 700hp to the wheels and make 6th a little better on mileage for long distance cruising.
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Old 06-02-2013, 08:14 AM   #10
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I'm in the same boat (zl1 m6). looking for a way to make 1st a little more useful with 700hp to the wheels and make 6th a little better on mileage for long distance cruising.
The best option would be to re-gear the transmission. Check with RPM Transmissions or Tick Performance to see if they have that option. They both specialize in building hi-perf manual transmissions. At 700 rwhp I hope you're not running regular street tires; but running a taller rear tire could help as well. You would be need to recalibrate the speedo which is not that hard with tuning software.
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Old 06-02-2013, 04:02 PM   #11
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i think the auto rear end would be a neat option. What do y'all think would happen to the 0-60 and 1/4 times??
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Old 06-03-2013, 10:03 PM   #12
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This was a pretty good thread explaining the different ratios, pros and cons etc.

http://www.camaro5.com/forums/showthread.php?t=237508
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