Hi,
You also need to consider rear tire tread width.
If you run 195 to 205 width tires on the rear, all you will do is smoke the tires with 3.55 or higher diff ratio. You will probably need 245 to 265 width to handle the bottom end torque. My 455 with 4-speed and 3.55 will spin the tires in first gear at any speed below 40 mph with wide open throttle. I'm saving for a set of 15x8" Cragar SS mags and BFG 245-60-15 tires.
Mike
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1968 Pontiac GTO 462CID, 4-Speed Manual, 3.55 rear. Aleutian Blue exterior, 219 Teal Blue interior. Chrome bumper, AM & 8-Track and Rally II Wheels
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