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Old Jul 30, 2013 | 08:15 PM
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Default Diff Install

Getting my new diff installed. 3:73 gears, Quaife, HD pinion bearing, cooler and upgraded output shafts all lubed with RedLine oil.

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Old Jul 31, 2013 | 03:59 PM
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3:73 gears sure do make a difference.
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Old Jul 31, 2013 | 05:22 PM
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Very nice!
Are you having a local shop do the diff work? If so do they also install ring & pinions? I'm in Milwaukee and have a friend with an 06 GTO who has had no luck finding a shop locally that wants to touch a rear diff or install gears.
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Old Jul 31, 2013 | 07:47 PM
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Originally Posted by brewcitygymratt
Very nice!
Are you having a local shop do the diff work? If so do they also install ring & pinions? I'm in Milwaukee and have a friend with an 06 GTO who has had no luck finding a shop locally that wants to touch a rear diff or install gears.
West Bend Dyno assembled the diff and did a retune when it was done.

They have a two wheel and a four wheel dyno. Vince is the sales guy, and they are the only ones I let work on my car.
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Old Aug 1, 2013 | 04:49 PM
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Ahh WBD I am familiar with them. I did some dynoing there before the remodel when I had my srt8 300c. Good guys.
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Old Aug 1, 2013 | 08:19 PM
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Originally Posted by brewcitygymratt
Ahh WBD I am familiar with them. I did some dynoing there before the remodel when I had my srt8 300c. Good guys.
I just drove the car home. They thought that they should check the tune with the new gears and did a little tweeking. I have a friend that works at GM Performance and he told me to install 3:73 gears because it would match up well with my cam. Just like all his prior recommendations, he was spot on.

Is your avatar from the "grove"?
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Old Aug 1, 2013 | 08:47 PM
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Yes sir. Have you run your car at GLD before the new diff? I ran a 12.91 bonestock a week after buying the car in 2010. Last time at track I was having a tcm tune issue(hanging on the rev limiter 1-2,2-3) after i had vararam and longtubes. I now have a ported fast 102, ported tb, axleback and a 3000 circle d stall now with a pat g tcm tune. l am going back when it's a little cooler to hopefully crack 11's.
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Old Aug 1, 2013 | 08:57 PM
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Originally Posted by brewcitygymratt
Yes sir. Have you run your car at GLD before the new diff? I ran a 12.91 bonestock a week after buying the car in 2010. Last time at track I was having a tcm tune issue(hanging on the rev limiter 1-2,2-3) after i had vararam and longtubes. I now have a ported fast 102, ported tb, axleback and a 3000 circle d stall now with a pat g tcm tune. l am going back when it's a little cooler to hopefully crack 11's.
The last time I ran a car at the grove was in 1974 and it was 71 Vega with a small block.....

I do go to Road America, but I a poor driver and the car is far more capable than the driver.....
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Old Aug 1, 2013 | 10:50 PM
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I can relate to the driver part. On the runflats my best 60ft is a 2.0. I see some guys have done low 1.9's to high 1.8's on the same tires.
I kind of figured your car spent more time taking corners when i noticed the pfadt coil overs. I plan on trying road america or black hawk one of these days.
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Old Aug 2, 2013 | 06:31 PM
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Originally Posted by timd38
The last time I ran a car at the grove was in 1974 and it was 71 Vega with a small block.....

I do go to Road America, but I a poor driver and the car is far more capable than the driver.....
Nice, I used to have a '72 V8 Vega...curious what your's ran and the set up?

Love to have one again with an LS swap!
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Old Aug 2, 2013 | 08:11 PM
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Originally Posted by PRE-Z06
Nice, I used to have a '72 V8 Vega...curious what your's ran and the set up?

Love to have one again with an LS swap!
I got the headers and such from Don Hardy near Lubbock TX, 9" Ford diff, cage, etc. 383 small block. Ran high 10's.
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Old Aug 3, 2013 | 12:06 PM
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Originally Posted by timd38
I got the headers and such from Don Hardy near Lubbock TX, 9" Ford diff, cage, etc. 383 small block. Ran high 10's.
Awesome, I ran the same headers
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