from my understanding there are 2 different ratios for the low range in dual range transmission. so my question is: is there a way to tell from the outside what ratio the transmission has (i.e. outside markings or tags)?

The regular D/R 5-speed on N/A cars have the same running gear - if the rear diff is 3.9:1 - you have the lower low range.

Turbo cars are the only oddballs - the ones that had a low range (I think it was only the RX - but I may be wrong) have a different gearing setup, and a higher low range - I think that includes MPFI N/A cars too.

 

Sorry, don't know about external tags - but the turbo MT trannies all have 25 spline front axles.

thanks. i just had to replace my d/r trnas with one from a wrecking yard and i was just curious if there was a way to check without tearing it apart, such as markins, tags or something else. can't quite tell if it is the same by driving it.

if it was out of a non-turbo car it will be the same.

Ill take a stab at this:

 

4High = 1:1 ratio

 

4Low = 1.4:1 ratio