Thread: Is multiport injection worth the extra cost??
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Old 01-04-2022, 08:38 AM
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Tom Wells Tom Wells is offline
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Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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I had carbs on both cars initially. Now they each have multi port EFI from Holley - the HP model. Considering they were tuned by a rank amateur (me!) they run fine.

I would have kept the carbs except for one thing: the substance we laughingly call gasoline.

When the Cobras were new in the sixties, gasoline was quite different from what we have now. The current boiling point of alcohol-laced gasoline is hardly over 100 degrees F. After a nice run in either car I could watch the Holley carb bowl vents emulate Old Faithful as the lower temp fractions boiled away, flooding the engine.

EFI has a 44 psi fuel pressure that keeps the boiling from happening.

So good luck with the carbs...

Tom

PS: the no-alcohol gasoline may help with a carb - never tried it, as it wasn't available when I had to switch.
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Last edited by Tom Wells; 01-04-2022 at 08:44 AM..
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