Just got a 3.27 9-Bolt (can't shut up about it actually) and I am collecting the parts I will need to bolt it on.

Does anyone have a part number for the speedometer gear for an '89 GTA that goes in a 700R4?

Tooth count on the gear might work too I suppose.

Lastly, I have a '91 base Firebird with 700R4 (currently pushing a 2.73 rear). When I swap out the rear for this nine bolt 3.27, all I have to do is swap out the speedo gear and that gauge will work accurately, right? I'm hoping it's that simple.

 

I used a 39/15 combo and i got them from here
http://www.transmissioncenter.net/sp...n_______va.htm

seemed to work well but also seems to work GREAT with my 3.42's as well which leads me to believe they might be a few mph off with 3.27's