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07-23-2020, 07:32 AM
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#1 |
         
Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,562
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2020 1LE Rear Gear Change - 3.73 to 3.90
Just got my 2020 1LE back from Hennessey (HPE850) and its obvious that it needs more rear gear, e.g., 390 or 410 or etc. for short distance (1/8, 1/4, 1/2 or one mile) fun.
I don't see any threads or posts on people going to more gear. Is it covered here and I'm just missing it or what? Thanks. |
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07-23-2020, 09:34 AM
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#2 |
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Account Suspended
Drives: Man Join Date: May 2016
Location: https://t.me/pump_upp
Posts: 143
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I don't think a 3.90 is available. I've only seen people getting hotter rear ratios by swapping in an entire rear diff from a different Camaro trim/trans, like putting the manual diff on an automatic car.
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07-23-2020, 01:21 PM
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#3 |
Drives: 2017 SS 1LE, 2016 1SS (previous) Join Date: Apr 2016
Location: Metro-Detroit
Posts: 1,863
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Although, and unlike the regular SS, the ring gear is able to be separated from the differential carrier, there are not any ratios available outside OEM options.
The ATS-V, CTS-V, ZL1/1LE and SS 1LE share the same basic rear differential. Ratios are either 3.73 (manual trans) or 2.85 (automatic trans). |
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07-23-2020, 05:29 PM
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#4 |
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Drives: '20 ZLE Join Date: Jun 2020
Location: Mile High
Posts: 3,562
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Bummer, I didn't ask when I ordered because I naturally assumed that ring/pinion changes could be made. More gear would really perk this thing up.
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07-30-2020, 02:32 AM
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#5 |
Drives: 1SS Summit White 6 speed Join Date: Jul 2017
Location: Gainesville GA
Posts: 579
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Put a set of 18 inch wheels on there
Makes world of difference
__________________
16 1SS M6 White
Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver |
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08-01-2020, 06:08 AM
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#6 |
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Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,694
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Your car is a 2020 model ZL1/1LE with the 10-speed auto, correct? My guess on why you think you need steeper gears is that the transmission is not tuned. Cannot tune 2020 model, and with a ZL1 the trans tune seems to be the key, owners keep complaining about too much torque management. So mechanically, you have a 4.70 first gear and a 2.85 differential, meaning plenty of torque multiplication. But the computer is not giving you all of the torque that the engine can produce, so it is not as quick as it should be.
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