Offshoreonly.com - Changing from efi to carb and vice versa

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JETTDOGG

07-09-2012 12:09 PM

Changing from efi to carb and vice versa

Thinking of taking on a twin project,
i have a 2000 7.4 mpi and a late'96/97 -454- SAME HRS +/-
i like the efi but which is the easiest switch
and how much/little hassle i.e. Ca$$h

crownline502

07-09-2012 07:40 PM

Jettdogg, I have a 94 502 efi that started giving me problems last summer. I went back carbed, holley 750jtubed, marine hei ,and a mercruiser intake. I lost a few mph on the top end. The holley is so well behaved my bud could not believe it was not my old efi. In my case of a vst nightmares and crazy wiring and no scan tool I went back to what I know. I hope that helps.

ezstriper

07-10-2012 10:03 AM

I run a procharger set up on a 502, was EFI pulled it off went to a prosystems custom carb, works great the procharger EFI setup not great in my opinion...

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