trans stuck to motor
I had the same issue when i went to remove my 4L60E. Seems the Dowel pins were seized to the tranny. I borrowed some little metal wedges from a friend. Slid one in, then another and another till i had all three in on the bottom. Once i had about an inch worth of clearance i used a crow bar to force them apart. Within an hour i had them separated, and wouldn't you know the damn trans took the dowel pins out of my block!! No damage to the block luckily. 
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Mine were steel and rusted nicely. I sprayed them with pb blaster and waited and sprayed more. I got a long screw driver up there and hit the end with a hammer to hopefully penetrate better. I pulled the little black cover by the oil filter and got a pry bar up there. The driver side popped for me first and the pass side was a bitch. Finally I wiggled it back and forth enough and got a flat head between the block and trans and hammered it up. I really did not want to do that but I think that was the only thing that was going to get it out besides heat.
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The other guys gave some good advice. My friends TH350 was a bitch to get out, it was in the car (74 Nova), unouched, for 32 years.
Took a lot of shaking the trans back and fourth, up and down, and tuggin the hell out of it, but we eventually got the thing out
Took a lot of shaking the trans back and fourth, up and down, and tuggin the hell out of it, but we eventually got the thing out
Originally Posted by THE CHOP SHOP
Mine were steel and rusted nicely. I sprayed them with pb blaster and waited and sprayed more. I got a long screw driver up there and hit the end with a hammer to hopefully penetrate better. I pulled the little black cover by the oil filter and got a pry bar up there. The driver side popped for me first and the pass side was a bitch. Finally I wiggled it back and forth enough and got a flat head between the block and trans and hammered it up. I really did not want to do that but I think that was the only thing that was going to get it out besides heat.
well it there steel then heat would work perfectly, the aluminum will expand faster than the steel dowel pins and theoretically unseize the bell housing from the dowels.
For anybody who tries the heat method just be sure your gas lines or wiring harness are out of the way, you may even want to try a heat shield.
