I have a 88 Iroc z this past weekend I did a swap from the tbi 305 to the 350 tbi we did a cam intake its got full exhaust now the car will hold an idle but but does not not run anywhere near where it should the motor was out of a 68 camaro timing is perfect starts no problem idles but barley moves I don't know if its the throttle body or the computer from the 305 or even from the distributor I don't know where to start any piece of advice would he helpful at this point thanks

 

General withdom is if you did a cam, you need either new chip or DIY re-flash.... Post your question on DIY chip forum or on swap forum. You'll get much better responce over there. But before you do, search around there's a good chance you'll find answer on one of those forums

 

Check your fuel pressure!
if your using the fuel pump on the block from the 68 *6psi and the 14psi pump in tank you will have a issue.....

If i were you, drop the tank remove fuel pump replace it with rubber hose - 3/8 cut to size of pump and a hose clamp.
Put mechanical pump on block and run a carb / hei.

(dont forget to block off return lines and drill hole in gas cap for a vent)