[hollywood52]

hey!! can anybody help me on the gear ratio for a borg warner 4-speed trans

[WDCreech]

I assume that you are asking about a BW T-10. If that is the case, there were many optional ratios available for different uses. Do a Google search and you may find a chart with the different ratios.

[hollywood52]

guys i'm trying to make sence of why it's not lining up...here's everything i got...borg warner 4-speed,main casting date 6-17-81, casting # 13 04 065 903 w.g. div,mlt 883,1cl132542...help me please!!

[WDCreech]

Originally Posted by hollywood52

guys i'm trying to make sence of why it's not lining up...here's everything i got...borg warner 4-speed,main casting date 6-17-81, casting # 13 04 065 903 w.g. div,mlt 883,1cl132542...help me please!!

Did you align the splines of the clutch disc with an aignment tool?

[hollywood52]

hey guys thanks for all the help !!! it helped alot !!!!!

[whyholdback]

What do you expect? You're too lazy to give us any info, you won't do your own checking for yourself, come on!
There are at least 7 different sets of ratios it could be, and the easiest way of checking in-car is checking tach against MPH in each gear. Out of car, put a vise-grip on the input splines, put another on the output splines, and check each gear.
Did you bother to provide us any of this? Nope.
How about it's original application? You couldn't be bothered to tell us that, either.
You must do your part before expecting anyone else to help.

[AutoGear]

I'll be concise. Whats stamped or cast into the outside of the case has literally no bearing on whats INSIDE the case. Generally, most BW parts are functionally interchangeable with other ratios from Borg Warner. Heck you could have a 2 speed gearset in a 4 speed case.

Certain brands (AMC and even Mopar along with Ford) used similar but different ratios to whats currently available as the 'Super T10'

[whyholdback]

Originally Posted by AutoGear

I'll be concise. Whats stamped or cast into the outside of the case has literally no bearing on whats INSIDE the case. Generally, most BW parts are functionally interchangeable with other ratios from Borg Warner. Heck you could have a 2 speed gearset in a 4 speed case.

Certain brands (AMC and even Mopar along with Ford) used similar but different ratios to whats currently available as the 'Super T10'

GM did it also, case in point: today you can get a 2.88/1.91/1.33/1.00, but in the late-'70s, the Camaro had a 2.85/2.02/1.35/1.00 for some non-Z28s.
The bigger issue for my figuring ( but not the driving experience ) is that 2.88:1, is it really 2.875:1? With B-W not giving tooth counts, there's only one ( costly ) way to know ( buy one )

[hollywood52]

hey "whyholdback" do you always talk so rough to a lady ? this is my first transmission. just trying to get all the info i could . i found the gear ratios for the t10 and because of all the help i knew where to look on line. thanks for everything ...and i'd rather be under a hood than on a computer...thanks guys