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Old 01-20-2009, 07:32 PM
Barry_R Barry_R is offline
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I have run the same 505 inch, 676 horsepower FE engine on a dyno with both multiport EFI and a carb. Documented in Hot Rod magazine in 2004.

Same intake - a converted Dove single four barrel. We never touched a thing on the package - unbolted the throttle body and bolted on a 950HP, unplugged the injector wiring from the harness and hooked up fuel to the carb.

Based purely on airflow the EFI throttle body should have won. It didn't. A statistical dead heat - but the carb had single digit higher peaks on both torque and horsepower.

Testing done at Wheel to Wheel Powertrain - at the time one of the foremost EFI tuning facilities in the country. The EFI is better at almost every non-WOT and transient driving parameter - but peak power is not one of them.
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91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
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Last edited by Barry_R; 01-20-2009 at 07:59 PM..
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