2002 Ford Mustang Gt 8 8 Rearend Rebuild Ford Racing 4 30 Gears
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With the problem properly diagnosed, we decided to step up the GT's rearend game a bit and install a set of Ford Racing Performance Parts 4.30 gears (PN M-4209-G430M; $199.99), foregoing the Truetrac for a full-on, 31-spline Detroit Locker unit (PN 187C-145A DL FORD 8.8; 649.95). While 3.90s definitely are ideal from a best-of-both-worlds standpoint-and served our supercharged Pony well on the street, freeway/Mojave Mile and dragstrip-the lower ratio will bring about a tremendous improvement in the car's First-through-Fifth-gear acceleration. Royal Purple's Max-Gear 75W-140 gear oil rounds out the simple collection of parts. View Related Article
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