Thread: Better engine?
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Old 06-24-2008, 05:24 AM
RICK LAKE RICK LAKE is offline
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Default The tests say other wise

olddog There have been 5 tests or more about this issue of Carb verses EFI systems. In every case the carb mays more power in the top end from 3-10 HP. The only system that was not tested against the carb was a large throttle body setup like the TWM 58MM. This is the ONLY setup that can match a carb of the 850cfm and up rating. Believe me I have done the homework on this. I run a 1,200 cfm throttle body on my old 452 and 482 motor over the last 8 years. The only thing that a MAF adds to the system is getting a tighter A/F ratio. The biggest MAF I have seen in the last couple of months is a 108mm. Most throttle bodies are in the 90MM range unless you go to the Accell 2,000 cfm with a dominator base. Drivability goes to the EFI system, even with a nasty high compression motor. There may be a advantage of wet verses dry intake manifold. My feeling are that you have a wet sytem(intake) with a carb( say 850cfm ) That is feeding just one cylinder for all it will take. You don't get the same over load of A/F with a EFI system. The injector is either batch fired for sequential fired. I have the latter, but have been told that my system goes to batch over 3,000 rpms because there in no advantage any more because of the speed of the motor. I think with a custom polished intake manifold you could close the split but again the carb will still stay on top. Look at what Nascar does with a 390 cfm carb and 350+ cubes. I think EFI would be in trouble on this one and loose bad. Rick Lake
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