Yeah, you've got an SM420 tranny. Final drive ratio is 1:1. It's one good sturdy tranny. A lot of 4 wheeler guys use 'em for off roading 'cause they're bulletproof and you can crawl with that granny low (not to mention pull a house down if you were so inclined).
Chances are you've got the great, big full floating Eaton H072 rear, 10 bolt cover with an enormous pumpkin. And chances are you've got a 4.57 gear.
If you're not planning on freeway driving and live where gas is not $2.50 a gallon, you got yourself one mean working machine.
If you do want freeway driving then do a search of posts. Many questions asked in the past. Especially by me!
