3:90 Gears
Melting Slicks
Joined: Aug 2002
Posts: 3,333
Likes: 1
From: Central NJ/PA
Originally Posted by 33ZZ4
Has Any Body Put 3:90 Gears In There C5. Wondering If They Are Noisey. I See Breathless Sell The Complete Center Section??????????
Le Mans Master
Joined: Apr 2002
Posts: 6,927
Likes: 3
From: Glendale NY
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18- '19
3:90 Gears
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I used to have 4:10's in my car, but due to a whine at over 60 mph I had to have them replaced. I had East Coast Supercharging change them to the 3:90's. They are as quiet as a church mouse. My car has 97,500 miles on it. Just got back from Ocean City Maryland, because I do a lot of HWY and country backroads......the 3:90's suit me fine
Originally Posted by 33ZZ4
Has Any Body Put 3:90 Gears In There C5. Wondering If They Are Noisey. I See Breathless Sell The Complete Center Section??????????
I used to have 4:10's in my car, but due to a whine at over 60 mph I had to have them replaced. I had East Coast Supercharging change them to the 3:90's. They are as quiet as a church mouse. My car has 97,500 miles on it. Just got back from Ocean City Maryland, because I do a lot of HWY and country backroads......the 3:90's suit me fine
Pro
Joined: Nov 2003
Posts: 548
Likes: 0
quiet as the 3.42
Originally Posted by 33ZZ4
Has Any Body Put 3:90 Gears In There C5. Wondering If They Are Noisey. I See Breathless Sell The Complete Center Section??????????
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Safety Car
Joined: Feb 2002
Posts: 4,038
Likes: 0
From: Springfield MO
St. Jude Donor '03-'05-'06-'07
I got my 4.10s from COH and - I think it was John - told me it was very
important to break the gears in (Heat Cycles) properly which is a key
factor on how much noise you'll get. I did the break-in just as he
instructed and did an extra heat cycle for good measure. I recall hearing
a bit of a whine with the radio off, but John said that was to be expected.
But after I added the Stingers (let alone the headers and cam), no more
whine!!!
important to break the gears in (Heat Cycles) properly which is a key
factor on how much noise you'll get. I did the break-in just as he
instructed and did an extra heat cycle for good measure. I recall hearing
a bit of a whine with the radio off, but John said that was to be expected.
But after I added the Stingers (let alone the headers and cam), no more
whine!!!
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
No reason to touch your pcm by swapping in gears on a M6 car. Ls1 edit adjustments only need to be made on A4 cars with gears for shift points. Local mechanic is WRONG if he thinks raising the rev limiter is a necessity on your stick car!!! 
