I have a posi unit out of a 94 TA that some one gave me but I don't know what type of posi unit it is or what type of gears it will need. Is there a way by looking at it to find out what stage it is?

Thanks.

 

well this wont be much help but ......


if you put the unit ....so the part that takes the gear ...if on the lower side..... mearsure the distance from the table to the mounting flanges ..... the differences sesm to be only 0.25" from a series two ...to a series 3 . but ....I am not sure what the numbers are ...sorry

 

no one else?

 

stages.. lol thats import talk.

 

Seems your a little ignorant on the subject.

 

well if you want me to be on topic and serious, then i ll say you have a stage 1 posi, like the rest of us, cuz GM never designated any axles or parts with stages.

 

Here let me help you out because I guess my terminology is not reaching you. I"ll use different names for the same thing.

posi unit=differential carrier

stage=series

considering your the first person to get confused by this I don't feel bad.

Anywho, fbody's that received larger numbered gears stock such as 3.23, and 3.43's possibly even 3.73 received a series or "stage" 3 carrier or "posi", those who used more of a hiway gear received a series or "stage" 2 carrier or "posi"

befor trying to be a smart *** make sure you won't end up a dum ***.

 

ive never heard people use the term 'stage' for axle ratios. only stages i hear about are turbos and aftermarket **** like that. no need to rub it in.

 

I am not sure if this will help you....but

If you stick the posi on end and measure up to the ring gear mounting flange you get the following measurement (using a tape measure)

2 series = 5 1/4"
3 series = 4 7/8"

I have a picture of a 2 series and 3 series side by side but I can't get them to show

 

Dont feel bad. I didnt get confused, I just knew that he was wrong. They are not referred to as stages, they are referred to as series.

 

I've never heard of "stages" in chevy terms either