OK getting my 383 put back together, I know on first start up I prime the engine but since I'm going from 347 to 383 and bigger injectors do I need my pcm flashed first before I start car or do i tow it to tuner for the flash first?

 

It should run, not good but it should, I would want a tune before I drove it anywhere.

 

Yep.

I would start it just to check for leaks but not put ANY load on it to include free rev. And shut it off as soon as you know there are no problems.

 

k thanks fellas

 

The bigger injectors are gonna create more of a problem than the added displacement. You should run it with the stock injectors until you get to a tuner or you will damage your engine.