I'm putting a carburated 351W in my 90 GT, can anyone tell me what wires can go or what wires have to stay? any other advise for this swap would be appreciated. Thanks

 

I had been looking into a carb swap for my 86 as well. You are going to have to wire up the ignition your self , which is pretty obvious. You can't use tfi anymore. You may be able to reuse some of the sensors for your factory guages and there wiring, if the don't require the pcm. The tach will have to be wired up though. You can remove your engine harness, o2 harness, fuel harnesses. Also if you want to you can custom wire the 02 harness to be used for a a/f guage.

Hope this helps some.