Hey ya'lls. I have a Impco 425 carb and two other thingys. One of them flows water and gas through it and the other has a VFF30 number cast on the top side. What are these things? Is there some diagrams or instructions for installing propane I could get? Also, what kind of fuel lines/hoses do I need to buy? Do they have to be special? I'm building a propane 400 motor for my 67 f100 4x4. Thanks.

 

Go to www.propaneguy.com, it sounds like you have the main 3 components though. 425 is the mixer, the part that flows water through it is the regulator or vapourizer, what ever you want to call it, and the other should be the lockoff valve (fuel shutoff) This will all have to be certified before you can fill it as well.