does anyone know if there is a difference in length for c6 torque converters. I have an 83 bronco and had to cut the old torque converter out so I could replace the rear engine seal (burr was stripped from when they rebuilt the engine). Went down the the wrecking yard, and they pulled an 85 c6 converter off (don't know if it was a car or truck) but when I put it in mine, if I tighten the tranny to engine bolts, the engine locks up tight. Loosen em up about a 1/4" and it turns over fine. The torque to flywheel bolts are clearing everything just fine, so as near as I can figger the torque converter is a bit longer. Any info on this would be appreciated before I tear it all down again. Thanks.

Justin

1972 Ranger 360 (Grandpa's Truck)
1975 F100 Custom 4x4 360 (My Fixxer Upper)
1976 F150 390 (Grandma's Truck)
1978 F150 351W (Older Brother's-thinks he's a mechanic so why is it sitting??)
1982 F150 XLT Lariat 4x4 351W (Friend's Truck-but he's in MT and it's at my place)
1983 Bronco XLT 4x4 300 (My Daily Driver)

 

I think that there are two different size crank pilots, something like 1.375" and 1.8something", I know that the larger is for FE's and the smaller for the rest, not sure if this is length or width. However, when replacing mine(C-6 behind a 460), it went on and seemed seated, but, turned it a little and got it to go just a bit farther into the tranny-might this be your problem? There are two sets of splines on the inside of the convertor, I don't think I seated on the inner set until I "nudged" it.