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In a word, no. If you are building a high dollar race motor then yes there could be but for a basic street motor and bracket motor, no.
 

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Discussion Starter #3
it is a 89 ford 302 fuel injection eng dumped the injection for 289 4 barrel intake with 600cfm holley
 

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Ronbob is correct - there is not a large difference between EFI and carb cams generally. EFI cams usually have a bit more lobe separation angle that smooths the idle and pushes the torque peak higher in the rpm band. In-fact, the 5.0L Cobra cam is very similar to the original 289 K-code cam. Engine builders have found the EFI performance cams to be better than traditional carb cams in many cases for specific purposes. Likewise, if you have a non-HO EFI cam, it will be as much a dog as an original lo-po carb cam. They will both run fine but may not be what you will eventually want in there, and will act similarly to intakes and carbs as 65FL says.

David
 
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