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04-06 General Tech/Discussion 2004-2006 GTO General Tech and discussion.


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  #1  
Old 05-02-2011, 02:39 AM
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Default 4.10's

Has anybody put 4.10's in one of these cars? I'm noticing the rearend is getting "clunky"... and got to thinking. The car has 107k and I drive like an idiot...
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Old 05-02-2011, 09:05 PM
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Not positive but does anybody make 4:10's for these? The steepest gear set I have seen so far are 3:90's
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Old 05-03-2011, 01:00 AM
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3.90's probably wouldn't be worth it..
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1973 Formula SD455 - #'s auto orig paint
1972 Trans Am - 4 speed orig paint
1974 Formula 400 - Ram Air automatic
1966 2+2 convertible - 421 4bbl automatic
1967 Grand Prix - 4 speed orig paint
1967 GTO - 4 speed orig paint 35k orig miles
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Old 05-03-2011, 09:32 PM
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Not much differance between 3:90's & 4:10's. I switched from 3:73's to 3:90's in my T/A and it really didn't make much of a change just a click faster in the 1/4. Going from the stock 3:41's to 3:90's will make a BIG differance especially if you got a stick car.
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69 Firebird Trans Am clone
76 Trans Am 400 4spd.
06 GTO M6 18's red/red - 1 OF 188.
09.5 G8 GT Stryker blue met. premium with sport pkg.
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  #5  
Old 05-06-2011, 12:12 PM
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It sounds like I'm gonna have to start doing some homework as the rear diff is getting noisier.
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Current Pontiacs -

1973 Formula SD455 - #'s auto orig paint
1972 Trans Am - 4 speed orig paint
1974 Formula 400 - Ram Air automatic
1966 2+2 convertible - 421 4bbl automatic
1967 Grand Prix - 4 speed orig paint
1967 GTO - 4 speed orig paint 35k orig miles
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Old 05-06-2011, 12:56 PM
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Quote:
Originally Posted by goatnut View Post
Not positive but does anybody make 4:10's for these? The steepest gear set I have seen so far are 3:90's
Check out GForce 1320. The offer 3:91s and 4:10 along with a ton of other rear and driveline parts for the '04-'06 goats. The gears aren't cheap.

http://www.shop.gforce1320.com/category.sc?categoryId=3
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Old 05-07-2011, 02:10 AM
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Quote:
Originally Posted by Verdoro 68 View Post
Check out GForce 1320. The offer 3:91s and 4:10 along with a ton of other rear and driveline parts for the '04-'06 goats. The gears aren't cheap.

http://www.shop.gforce1320.com/category.sc?categoryId=3
Thanks!
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Current Pontiacs -

1973 Formula SD455 - #'s auto orig paint
1972 Trans Am - 4 speed orig paint
1974 Formula 400 - Ram Air automatic
1966 2+2 convertible - 421 4bbl automatic
1967 Grand Prix - 4 speed orig paint
1967 GTO - 4 speed orig paint 35k orig miles
Reply With Quote
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