Ryan I just realized you're running an AOD. I got the formula out of the Mustangs Unlimited Catalog. Thats what I used to get my new spedo gear. The formula is still good. But, when the specified the drive gear teeth(pink or brown) they were probably only talking about the older trannies. c4/c6/fmx You should check to see if they are the same in the new AOD. Somewhere somebody has to have the specs on that. a local tranny shop or ford's part counter. Good luck
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1970 Stang Conv:
en:Boss351 (balanced/blueprinted)
mech cam(240*@.050/.540 lift)
Scrw in studs/comp cams rllr rkr
Mldn valves 2.19in 1.71ex
ported polished cc'd hrdnd ex
Keith Black FT pistons(10.25/1)
Weiand Excellorator manifold
Holley700 DP mech 2nds
MSD 6 box and Dis
Headers/2 1/2 inch duels
tr: modified FMX
re:9-inch/3.89 limited slip
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