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Old 06-05-2011, 08:33 AM
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67blackcherry 67blackcherry is offline
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Join Date: Aug 2006
Location: The conservative enclave in a land of liberals; South Orange County, CA
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Quote:
Originally Posted by pmdtech View Post
You are correct! 3.23:1 is the only A/C ratio for manual trans 400 and 400HO models.
The A/C auto trans 400 and 400HO models had the 2.78:1 as standard with the 3.23 as
an option.
Non-A/C cars had a long list of optional ratios:3.08,3.23,3.36,3.55,3.90.
My car has the optional 3.23. Still need to install the pipe I had InLine-Tube make.
Good Eye!
The higher operating rpm with the optional ratios and higher temps caused by the A/C compressor/condenser can be too much for the cooling system.
No wonder my 'bird was always such a dog! I thought she had a 3.08 rear end.....interesting.

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