Truck won't roll in reverse

[VileZambonie]

This won't really be visible without pulling the trans and popping out the front seal. Just back it off and try to reinstall it. You might get lucky. BTW why did you replace the converter anyway?

[team39763]

I replaced the converter because I had a 2600 in there with the 350 that came with this truck.  The previous owner traded me a 3000 when I did my 6.0 swap.  He said he used it in a car that he got rid of earlier and didn't need it anymore.

[VileZambonie]

Is it the correct converter for your application? You must have a pretty aggressive cam for that converter

[team39763]

I actually think I need a bigger converter like a 3500+, but I'm no mechanic.  I'm just a beginner who's trying to learn. 
Hey I backed the trans off by less than 1/4" and the converter spins freely.  I forgot to put a little lube in the crank snout before I put the converter on there, would that explain why it didn't seem to want to turn?  When I went to look at it, it almost seemed as if the trans wasn't seated right when I tightened it to the motor. I'm gonna try putting it back together and see if it spins now.

[VileZambonie]

I don't understand why you put that converter in there but anyway make sure the converter is fully seated in the pump. Rotate it and push towards the trans. even with the trans bolted to the engine you should have no problem spinning the converter

[team39763]

Nelson Performance suggested a 3000 stall when I had this motor in my wife's truck.  The cam is a 226 with 580ish lift.  I liked how my wife's truck drove with the 3000 that we had in there.  I'm running a victor jr intake now, so I was assuming I'd need a higher rpm converter.  I'm gonna pull the motor in a few hours(need to paint the firewall), so I'll make sure to seat the converter just like you said.   

[Captkaos]

3000 sounds fine for that application.  My brother was using a 3000 in his turbo'd LS I think he moved up a while back, but I didn't keep up.

[1976Scottsdale]

When you get the engine out of the way, crawl under the truck and hold the converter up while rotating it.  It will be easy to tell if the converter is all of the way in because you will not even have room to slip a finger between the converter and trans pump.  Then, when you put the engine in, you will probably have to pull the converter towards the engine a bit, don't worry about it, I have to do that with all of mine and they work fine.

[team39763]

I've been doing some reading, and it looks like maybe I didn't need that pilot adapter for my swap.  So I'm gonna pull it out and see how it goes.