To do EFI Turbo on a currently naturally aspirated engine with EFI or carb, you need the following:1) A turbo and associated piping from a Thunderbird Turbo Coupe, SVO, Mustang GT Turbo, or Capri Turbo RS, or a new replacement item.
2) An exhaust manifold or aftermarket header from the same application list as above.
3) A wiring harness, ECM, and sensors from one of the above applications, or aftermarket EFI.
4) An upgraded electric fuel pump.
You need to add oil feed/drain lines from engine to turbo, and coolant lines for turbo, if it has a water cooled center section. You'll also need to swap and/or combine the wiring harnesses to work with the turbo ECM.
When the swap is complete, the boost level will have to stay low, due to the cast pistons, poor combustion chamber shape, and high compression (compared to the factory turbo engines). You're far better off in the long run to swap in the entire turbo engine, if it's an option.
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Mark Walton
'83 Mustang GT 2.3 Turbo NHRA Stocker - it's alive!
'69 "off brand" NHRA SS/EA