Thread: Improve gas mileage on a 427 so ?
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Old 02-23-2020, 05:09 AM
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Location: Glendale, AZ
Cobra Make, Engine: FFR MkIV 427
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Short of tearing it out and using for a coffee table, it's going to use generous amounts of fuel (about 740 cfm air/fuel @ 6000 rpm). The only things that come to mind are a smaller cam and possibly an EFI. The cam will impact power and the EFI benefits depend on how well your carb is working. Running the engine lean is not recommended, so there are limits to what you can actually save.
I'd recommend evaluating initial cost vs long term savings vs fun factor sacrificed vs how much you drive. The price of fuel may be the least bitter pill.
Good luck,
Mark
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