'7747 & two A.I.R. valves - CrossFire retrofit

[Shannen Durphey]

Ken Kelly wrote:

> >>>ASDT and ANSY are for a 2.73 rear gear ratio, ASDU and ANTA are for all
> others.
> 
> My '82 Corvette has something like a 2.87 ratio, maybe even 2.73. Should I
> use ASDU, or ASDT? (What's the difference?)

I'd use ASDU.  The 2.73 truck ratio is combined with a 16" tire, which in turn
means lower overall numerical ratio at the rear tires.  ASDT is very likely to be a
less agressive chip and/or it may deal with knock 
by removing more advance than would be needed in your application.  Comparing the
.bins would be the best way to check this theory.  

It was late last night, I probably could have ignored ASDT altogether.
Shannen
> 
> Thanks again for all the helpful replies!
> 
> Ken
> 
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