Quote:
Originally Posted by pmdtech
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.
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No wonder my 'bird was always such a dog! I thought she had a 3.08 rear end.....interesting.