Can you convert a 95 Chevy Tahoe 350 tbi to propane?

Answer 1

Yes, though it is more difficult than a carb'ed engine. With a TBI setup, you can still use a standard propane mixer on top of the TBI (between the TBI and air breather) like you would on top of a carb when setting up for dual fuel operation. Now you simply need a switch to turn off the fuel injectors when you switch over to propane mode. Disconnecting the +12v power to the injectors would probably be the easiest as the ECM provides the ground to fire the injectors. You could get more creative by locating the pink wire from the ignition to the ECM and disconncting that when in propane mode. That is the signal that tells the ECM when the ignition is on or not. With that disconnected, the ECM won't "know" the ignition is turned on so it won't turn on the electric fuel pump or fire the injectors. However, if you have an auto tranny, that may mess things up.