Best Yet Cheapest Way To Do Posi-Trac??

V-6Power

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I have a 2005 V-6 that I'm currently modding, but am frustrated by the fact that i keep doing the infamous "one wheel peel". I would like to put a posi trac in the rear end because i plan on starting to go to the track and would like to keep power to both tires (i've decided against a limited slip). I am wondering however, what would be the best, yet cheapest, posi trac that i could put in my rear end. Any help would be greatly appreciated.
 

Wes06

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Not a teach subject. Will be moved soon

But more than likely it's a takeoff gt/gt500 axle, + whatever new diff you want
 

JimC

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Cheapest way by far -- after paying for someone to open the 7.5 and install parts (if you can find them) and then breaking it anyway (all it took was a tune, CAI and set of drag radials to break the allegedly indestructible Richmond gears in my 2006) - is to swap the rear end for the 8.8. You can swap from a 2005-10 GT or GT500, or any rear end from a 2011+ Mustang. The 2005-10 require swapping the pinion flange to a cobra flange for about $25, 2011+ should be a direct swap but some don't have the correct flange and you have to check them.
 

07 Boss

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And so you know that posi-traction IS a limited slip rear end. So is the stock traction-loc in the OEM 8.8. Why don't you want a limited slip rear end? Do you want to go with a spool or gear set up?

After much research I went with the Auburn Prob LSD for drag racing. Many will tell you to get a Tru-Trac, I'm just not a fan of using a Helical gear set up for launching from a dig. Spool or a locker is your best bet for drag racing but are kind of a bitch on the street.

IMO a good limited slip rear end is the best for a street strip application.
 

07 Boss

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Cheapest way by far -- after paying for someone to open the 7.5 and install parts (if you can find them) and then breaking it anyway (all it took was a tune, CAI and set of drag radials to break the allegedly indestructible Richmond gears in my 2006) - is to swap the rear end for the 8.8. You can swap from a 2005-10 GT or GT500, or any rear end from a 2011+ Mustang. The 2005-10 require swapping the pinion flange to a cobra flange for about $25, 2011+ should be a direct swap but some don't have the correct flange and you have to check them.

I've thoroughly abused some cars and never had a gear failure with Richmond gears. Was that in the 7.5"? You can probably only make that ring and pinion so string and have it fit.
 

JimC

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I've thoroughly abused some cars and never had a gear failure with Richmond gears. Was that in the 7.5"? You can probably only make that ring and pinion so string and have it fit.

Yes, that was in the 7.5. The shop was surprised when I told them I broke it.
 

07 Boss

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Yes, that was in the 7.5. The shop was surprised when I told them I broke it.

Well I guess it was one of those situations where bigger is better. I will one day go another .2" bigger on the ring gear myself.
 

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