I am running a 360 la setup with a 727 behind it. Its in a demo car and has a 1/2" midplate. I am in need of a 1/2" crank spacer that would also center the snout of the torque converter. I have tried just spacers on the outside of the flexplate and only get 1-2 runs on the flexplate till it starts to bend and touch the block. i have searched everywhere i can think of when i happened to come across this forum. Any help would be much appreciated.

Your midplate is 1/2 inch thick????

What types of flex plate are you running, stock or aftermarket?

If it's the factory 4 point star type with cut outs in the points, you could try a solid round aftermarket one like a B&M.

If the 360 is externally balanced it would be one like this.
It would flex less than a factory one.



https://www.summitracing.com/parts/bmm-1...ASABEgLtoPD_BwE

As far as a spacer for the torque convertor to crank stub, they may have to be made by a machinist.
I did a quick search online and didn't see anything.

Yep I have been running stock flexplates.I was going to go with a flexplate like the B&M one, just a 318 one. My 360 was balanced for a neutral weight flywheel. I will have to take a crank to a machinist and have them mill a spacer to fit. Thank you

might be easier and thus cheaper to extend the snout on the converter.

You could also machine your mid plate so that the part between the block and transmission is only 1/4 or 5/16 thick. It would still be strong were you need it but cause less converter issues.

Maybe stack 2 flexplates for extra strength in that area.

IMO, that's the most practical solution, a pretty simple lathe/drill press job.

And, welcome to the board.