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Tech & Fab
Propane engine builds (tech, questions, advice)
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<blockquote data-quote="Bronco Buster" data-source="post: 258322" data-attributes="member: 2538"><p>If you want to know how to build a big HP motor with a 425 mixer. Find a guy that builds winning round track motors for hobby classes. I know when I was into dirt track we were getting 500 plus HP with a 500 cfm motorcraft 2150 carburetor. Nascar makes 700 plus with 600 cfm on restrictor plate tracks so anything is possible. </p><p>There is a someone on here (Little Tim) that has a big block chevy that I have heard is over 500 cubes and I'm sure has well over 650 HP on dual mixers. </p><p>All of this is a major reason I have been talked out of propane. If it will only support a stock motor (325 hp) I don't want it. I can do a decent efi for about the same price as a dual mixer and have less headaches and better mileage. I know a guy with dual mixers that will go through 7 gals of propane sitting in the shop faster than I go though 7 gallons of gas on the trail. :****:</p></blockquote><p></p>
[QUOTE="Bronco Buster, post: 258322, member: 2538"] If you want to know how to build a big HP motor with a 425 mixer. Find a guy that builds winning round track motors for hobby classes. I know when I was into dirt track we were getting 500 plus HP with a 500 cfm motorcraft 2150 carburetor. Nascar makes 700 plus with 600 cfm on restrictor plate tracks so anything is possible. There is a someone on here (Little Tim) that has a big block chevy that I have heard is over 500 cubes and I'm sure has well over 650 HP on dual mixers. All of this is a major reason I have been talked out of propane. If it will only support a stock motor (325 hp) I don't want it. I can do a decent efi for about the same price as a dual mixer and have less headaches and better mileage. I know a guy with dual mixers that will go through 7 gals of propane sitting in the shop faster than I go though 7 gallons of gas on the trail. :****: [/QUOTE]
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