I'm thinking about doing a quick and affordable rebuild on the 300efi head, naturally aspirated, to get familiar with the engine and also to build, test, and hookup a more affordable marketable product I have in mind. Which is a large aluminum pot float bowl within a larger chamber that hot radiator coolant flows through and there's insulation around that. Then an electric arc inside the chamber will break down any liquid fuel, even crude oil, into methane gas and the hot coolant reduces the dielectric breakdown of the oil/gasoline/fuel. This product could be made for less than $1,000 and installed on any engine in a single day. A standard Impco propane carburetor could be used to control fuel and air OR a special valve system to eliminate the throttle plate. This makes the job for a common person much easier and could be attached to virtually any vehicle in one day's time. Mound the fuel vaporizer, re-route the engines coolant coming out of the thermostat to the vaporizer and then back to the radiator, attach the terminals for the arc to the alternator (a high amp alternator may need to be installed, depending on the situation) with a toggle switch to turn on the arc and open a selonoid valve to let the vaporized and thermally cracked fuel from the last time the vehicle was ran into the carb thus giving the operator a fast startup. There would be 3 walls to the vaporizer, a steel or aluminum inner wall to contain the fuel, an outer shell which hot coolant flows around, and a fancy stainless steel outer shell which is packed with insulation. The top would be made of stainless steel and would unscrew from the aluminum fuel reservoir for easy maintenance. Fuel would be kept at a specific level via a giant custom made float bowl I already have designed. This allows engines with either cam driven mechanical pump or electric pumps to be used with complete indifference. If vapor lock proves to be a problem a small centrifugal fan will be attached to the gas out supply of the vaporizer to continually induce a vacuum on the chamber.
I know this makes me seem like a spastic with a bunch of grandiose idea's that never gets anything done, but I do intend to build an engine as we discussed earlier this year. Ceramic coating piston face, head, and coated hardened valves, RF85 metal treatment amd cryogenic tempering of all iron components, nickisil wall coating, gapless top rings, forged anodized pistons, and if I need to get custom pistons made I'll have a shop design them with a heightened wrist pin for use with 240 connecting rods, low overlap cam grind for monster low end torque, standard 300 crankshaft (don't have the budget for a billet crank, unfortunately) the Borg Warner turbocharger you recommended, high pressure thermal catalytic cracking system, eliminating the throttle plate, and a ceramic coated outer finish of all external surfaces to top everything off. This engine build will run me about 15k to 20k but I believe that MPG's as high as 200 MPG may be possible. With the single pot system I suspect that MPG's between 30 and 70 are possible.
A Bourke engine coupled to the high pressure thermal cracker I believe MPG's as high as 500 or more are possible. Out of a full size 1 ton dump truck rocking dually's. Of course when I build this super custom 300i6 for my 66 F350 its staying in there even after I build my Bourke engine. I'm going to put a bourke engine in my fathers 1969 C10 for drag racing on account of it being able to spool to 30k RPM safely and restomod it for the drag strip. Its rusted out to hell and back but the frame and all mechanical components are still good. It has factory trailing arms AND a factory shortbed making it a perfect hot rod candidate. A 200 CID bourke would produce 1,100 horsepower naturally aspirated. A 400 CID (still smaller than a 454 BBC) would produce about 2,200 HP naturally aspirated. I shutter to think of what it would do with a large turbo or blower.
When I build the super 300i6 for my 66 F350 and wear out the tires off it I'll pull off the old Dana 70 axle and build a Dana 80 with a detroit locker to put on the 1966 and use the Dana 70 and rebuild it with a locker for the 1969 C10, which the C10 also be converter to 4 wheel drive for better take off on the drags trip and off road handling.
Do you think an electric arc fuel gasifier that lets any gas engine run on any fuel and increase MPG would sell well? My father has been telling me for a year I should make a marketable product first instead of this super crazy efficient system to pull in some money, establish a reputation, and prove the concept. It would only take me a couple weeks to build a prototype electric arc fuel gasifier.