Thread: Superformance rear end
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Old 01-24-2007, 02:43 PM
Bill Wells Bill Wells is offline
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Join Date: Jan 2001
Location: Bloomfield Hills, (Detroit area), Mi
Cobra Make, Engine: Superformance 156, ex Paxton 351, now a 392 Ford Racing Stroker
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older cars had Ford IRS rear ends ( 3.73 ratio ) , from a 94-97 TBird I recall .

The newer ones, like in your late serial car, are BDR rear ends, which I believe are the same ones in the Brock/SPF coupe and have the lower 3.46 ratio as Archrms stated.

Enjoy your car and its many smiles to the miles ! Bill
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