Thread: IRS help
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Old 08-10-2007, 06:33 AM
J Persons J Persons is offline
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Join Date: Aug 2004
Location: Rosamond, Ca
Cobra Make, Engine: FFR, 331 Sportsman block, T5Z, 3.55 IRS, Fuel Safe cell
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You need to look for a TBird SC or a Cougar XR7. Those two have the correct components, including the axles. Other models may have the track lock and disc brakes, but those two have for sure. The auto equipped cars normally used a 3.27 ratio, and the manual cars normally used a 3.08. The 3.27 can be used as is, but I would recommend changing out the 3.08 to something a little more sporting. John
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FFR, 331 SBF dynoed 372RWHP@ 6100 RPM on 87 octane pump gas
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