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Hi, I need help choosing the right gears, Im thinkng about 3.80 POSI, what do you think?
The car is a 68 mustang, 302 engine, headers,FlowMasters, TCI AOD, and 3.00 open gear
Thanks
I have an 05 Mustang GT, 4.6, auto trans. It has CAI, Twin 62 mm throttle body and high performance pulley's. I had 373's installed, wish I went to 410's. I pull 3grand at 80 mph. I had plenty of room for 410's. Think twice before you do this and are dissapointed. General rule is "Go Big or Go Home". Rather too much , than too little !