polyol Posted July 4, 2017 Author Share Posted July 4, 2017 I cannot tell you how much the 390 gears made a difference. This is what it should have come with stock. Holy crap what a diff. Money well spent. Link to comment Share on other sites More sharing options...
FNBADAZ06 Posted July 4, 2017 Share Posted July 4, 2017 10 hours ago, polyol said: I cannot tell you how much the 390 gears made a difference. This is what it should have come with stock. Holy crap what a diff. Money well spent. Did you have the base C6 rear-end installed for the 3.90's ? I'm assuming you have the current RPM rear diff upgrade ..... http://www.rpmtransmissions.com/page48.html Link to comment Share on other sites More sharing options...
joe@cpr.com Posted July 5, 2017 Share Posted July 5, 2017 Victor I'm playing with you. It's a base diff. But to many people worry about them. You don't drag race like an idiot, I have a built c5 diff and I know mine won't grenade. Link to comment Share on other sites More sharing options...
FNBADAZ06 Posted July 5, 2017 Share Posted July 5, 2017 5 hours ago, joe@cpr.com said: Victor I'm playing with you. It's a base diff. But to many people worry about them. You don't drag race like an idiot, I have a built c5 diff and I know mine won't grenade. Ahh, gotcha !!! I was hoping you might have been part of a pilot vendor who were testing pre-production runs of the gears that are supposed to be available later this summer....and I wanted some of that action LOL Link to comment Share on other sites More sharing options...
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