454 Mag EFI Cyl Head
I have a 2000 model 454 Mag EFI 385hp that is tired. I am going to build a slightly larger engine, but I need to know if my heads are oval or rectangle port, as I am going to use my current fuel injection setup with a new program. I would like to build the new motor before disassembling the old one because it is still running.
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Your heads are rectangle port, the same ones were used on the 502 also, Smitty
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Thanks
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Friend of mine is in the same boat here. He's considering a cam & possibly a stroker kit. I guess he'll have to reprogram the module if he does any of the above?
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If he changes much of anything, he will need to have the ECU reprogrammed. Costs around $350 to have done
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