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Old 02-04-2014, 09:16 AM   #1
Chevrolade
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L99 and 4:10 gears anyone?

As I'm looking for a set of gears for my Camaro I can not find the 3:91s anywhere but do find the 4:10s
Question is is there any auto guys here running them? And in what gear are u finishing the 1/4 in ?thx
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Old 02-04-2014, 08:13 PM   #2
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You'll be in fifth for sure with stock power range.
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Old 02-04-2014, 08:19 PM   #3
Supercharged SS
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Originally Posted by Chevrolade View Post
As I'm looking for a set of gears for my Camaro I can not find the 3:91s anywhere but do find the 4:10s
Question is is there any auto guys here running them? And in what gear are u finishing the 1/4 in ?thx
I tried them back in 2010. Tuner admitted to never adjusting the trans shifting for the 4.10's. Took it to the track and it was banging on the limiter. End up destroying the engine.

They were fun on the road but I don't think they'll work on the track.
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Old 02-04-2014, 08:51 PM   #4
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What kind of gears do you have now?
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Old 02-04-2014, 09:10 PM   #5
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What kind of gears do you have now?
Me? 3.70's but it's a turbo 400 through a. 9".


I've been running the 3.45's and it was perfect.
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Old 02-05-2014, 08:33 AM   #6
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Thx for the info I have decided to ditch the 6l80 and do a 4l80 conversion along with 3:91 or 4:10

Just scared of the 4:10 with all theses horror stories of them breaking
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Old 02-06-2014, 06:45 AM   #7
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WHY? I promise your car is going to slow down going from a 6l to a 4l80. You want to see what it will run like before you swap, go to the track and launch in 2nd gear.
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Old 02-06-2014, 08:26 AM   #8
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I know that 1st gear is a 2.48 :/ is what sucks but u don't think a nice converter would help? Chris recommended a 5C for the swap
I'm just gathering the parts for now.
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Old 02-06-2014, 08:46 AM   #9
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A 5c is a monster converter, but that first gear is gonna hurt the 60. Id say with the swap and that converter you'd see 1.6 60's. Could be sub 1.5s with 3.91s and a 1e with a 6 speed. It will be a durable setup though.
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