6 speed tranny - PY Online Forums - Bringing the Pontiac Hobby Together

		PY Online Forums - Bringing the Pontiac Hobby Together > PY Welcomes 2004-06 GTO Owners > 04-06 Transmission Tech
6 speed tranny

04-06 Transmission Tech Automatic or Manual trans issues

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02-06-2005, 10:02 AM

rabon008

Senior Chief

Join Date: Dec 2004

Posts: 385

BTW: Not all T56s are the same. The GTO gear ratios match the Z51 (designed for quicker acceleration than the T56 used in the standard 'vette) in gears 1-4 and 6th. Fifth gear is a closer ratio to fourth than in the Z51. The GTO also has a 3.46 final compared to the Z51s 3.42 final.

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