PY Online Forums - Bringing the Pontiac Hobby Together

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- 04-06 Transmission Tech (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=560)

- - 6 speed tranny (https://forums.maxperformanceinc.com/forums/showthread.php?t=443551)

sherman

02-02-2005 10:41 PM

what type of 6 speed tranny is in the new gto verse the 6 speed in 1999 corvettes ?

sherman

02-02-2005 10:41 PM

what type of 6 speed tranny is in the new gto verse the 6 speed in 1999 corvettes ?

Mr_GTO

02-03-2005 03:43 AM

Same T56 Tremec tranny. Different ratios but basically the same unit in a different case.

sherman

02-03-2005 05:32 PM

MR__GTO
WHAT IS A T56 TREMEC TRANNY. WHAT DOES TREMEC MEAN?

rabon008

02-03-2005 07:06 PM

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by SHERMAN:
MR__GTO
WHAT IS A T56 TREMEC TRANNY. WHAT DOES TREMEC MEAN? <HR></BLOCKQUOTE>

I know this is addressed to Mr_GTO but Tremec is Tremec Corp. They now own BorgWarner who make automotive transmissions, including the T56. The T56 is a close ratio performance 6 speed transmission.

rabon008

02-06-2005 10:02 AM

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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