Well, I just picked up this project and I had to get to the transmission to remove it cause it was bad and I got the transfer case out today!! I guess I could compare this to finding the golden cherry in the cherry tree!!!! I know it's a Downey OFF - ROAD transfer case but what else can we tell by the numbers?? I don't know what trans I have on the back of my 4.3 Vortec but I'm leaning towards a THM250 because it looks like it has a BAND adjuster bolt near the tranny lines. It is also cool that it appears to use the stock trans w/ just the tail housing removed and just linking the tail shaft and input shaft by a slide on spline connector!! I'm thinking that if I decide to go to the salvage yard and get another trans, all I need to do is remove the tail cone and slide the outfit over and onto the new trans. Too bad I can't go to a THM350. Maybe I can find the adapter to do so. Can anyone identify this T-case by the numbers? Does it use 80w gear/axle lube or share trans fluid? I need to figure the 4 way shift pattern for 4H, 4L, 2H, and neutral. Looks like an H pattern. Thanks for looking and if you toss some links out there so I can see how this case is made up that would be great. Time for me to get to de-greasing this beast! Scott