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How is people getting big power out of propane
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<blockquote data-quote="JRH" data-source="post: 227522" data-attributes="member: 1256"><p>When doing some research on this I ran across a post from Draggbody on pirate, "i constantly twist my big block to 4800... i have turned it 5500+... i use an air/fuel ratio gauge to monitor my settings and it always goes way rich when i stand on the gas hard... that tells me that it flows enough propane, i have calculated the math on cfm's and it says that the impco wont physically move enough air to rev more than 4800, but mine did... i would say that impcos cfm rating are perhaps a little conservative... here is a few 5500 rpm throttle shots, motor sounds good and it never got over 210*...edit: i run a single 425, model E, and a VFF30 lockoff..."</p><p></p><p>Also there is an OHG450x which is supposed to flow better than the 425 but from my reading is a bitch to get dialed in. Also Imco makes a model 600 which is reported to flow over 900cfm's. The downside is that it is rediculously huge in size.</p></blockquote><p></p>
[QUOTE="JRH, post: 227522, member: 1256"] When doing some research on this I ran across a post from Draggbody on pirate, "i constantly twist my big block to 4800... i have turned it 5500+... i use an air/fuel ratio gauge to monitor my settings and it always goes way rich when i stand on the gas hard... that tells me that it flows enough propane, i have calculated the math on cfm's and it says that the impco wont physically move enough air to rev more than 4800, but mine did... i would say that impcos cfm rating are perhaps a little conservative... here is a few 5500 rpm throttle shots, motor sounds good and it never got over 210*...edit: i run a single 425, model E, and a VFF30 lockoff..." Also there is an OHG450x which is supposed to flow better than the 425 but from my reading is a bitch to get dialed in. Also Imco makes a model 600 which is reported to flow over 900cfm's. The downside is that it is rediculously huge in size. [/QUOTE]
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