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Deciding which gear ration to go with?

3.91 to 4.11 should be fun enough.
Just be sure to get street gears unless you like gear noise. Or get race gears if your going to beat on it. I knocked teeth off street gears after just 3 hits.
 
Instant acceleration. I 4:11 with slicks and a 4 speed. Never broke anything. Automatic shouldn't be any problem provided the gears are set up properly.

Yep.
I’m running a four speed as well.
Low to mid 11’s on premium pump gas.
408 stroker small block Mopar in an A body barracuda.
 
Ordered from Quick Performance. It arrives completely setup and ready to bolt in.

Partial Rush Partial Rush (ordered yesterday and have it tomorrow)
Upgrade to New, nodular iron center section case & Nodular iron Daytona pinion support

F9C Ford 9" Complete Center Section / Third Member
Gear Ratio: 3.91
Carrier Options: 31 Eaton Truetrac
Pinion Support: Standard
Yoke: Short Narrow 1310
Total: $1,145.00
 
Thanks for the help. I still have the old center section with 4:11 gears. The carrier is no good though.

I am starting at the back and working forward. This truck doesn't need much but it does need a few things.
 
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