1971 Ford Thunderbird Landeau 429 Thunderjet
 

Hi. I am rebuilding my 429 to some some more go than stock. lol. I have been trying everywhere to find out my rear gears. If I spin the tire, I get ALMOST 3 turns. I have been told could be a lot of different gears in the rear. How do I find out? It is the Dove Heads 429 with 360 HP stock. Thanks for your help. Cheers!

There should be a metal ID tag hopefully still bolted to the case. The door placard might have some rear end info.