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Old 06-05-2013, 09:53 AM   #10
GretchenGotGrowl


 
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Drives: `12 LFX/`11 EB F-150/`13 Sonic RS
Join Date: Sep 2010
Location: Little Rock, AR
Posts: 4,955
Why do you want the 3.91 gears?
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EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
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