355's are probaby the best freeway gears around. Whoever told you that they will hurt your top end doesnt know what the **** their talking about. Your car cant top out the final gear with 273's anyway. The 355's will let you. if you EVER street or drag race your car go with 410's or 373's. 355's arent for drag racing and you will NOT notice a big difference in your quarter mile times. Im swapping my 355's out for 410's very soon. I already have the gears I just need to slap em in. Dont worry about gas mileage. If you really care about gas mileage over performance get a Honda.
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98 GT manual trans, Magna Flow exh.
old car: 95GT, TFS T.W. heads, Holley Intake, B303 cam, FRPP 30lb injectors, Scorpion 1.6 rollers, 65mm TB, 73mm MAF, BBK Longtubes, Flowmaster cat back, March Pulleys, MSD coil, 9mm wires, Tremec 3550 trans, Pro5.0 shifter,10.5 Motorsport clutch, FMS aluminum driveshaft, weld in subframe connectors. 190lph pump, BBK adj FPR.
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