monterey1962
03-14-2010, 06:05 PM
Basic EFI HO Conversion 101
Links and additional information included below this article.
Parts Needed:
-E7 Heads: Found on 87-93 Mustangs, 89-92 Lincoln Mark 7's and 87-96 E/F series w/302 (351w has larger head bolts)
-HO ECM: Engine computer (Mark 7 to keep cruise on the 88-91 boxes, 86-88 mustang for the 86-87 box)
-19Lb injectors: 86-up mustang, 89-92 mark 7, 87-96 E/F series trucks (302/351)... They have an orange top.
-HO upper intake: 87-93 Mustang, 89-92 Mark 7
-HO Throttle body
-HO cam: 86-93 Mustang, 89-92 Mark 7
Modifications needed:
-1. Throttle Body: The linkage arms on the throttle bodies need to be swapped. It's easy and straightforward. Grind, swap reattach with screw, JB weld, or actually weld it.
-2. EGR Spacer: The EGR spacer will need to be enlarged to 63mm. A couple minutes on a lathe fixes it up. The 93-95 Ford lightning and some Aussie Fords use a similar EGR spacer if you can find it. Machine shops are usually able to do this without issue for a fee.
-3. Upper Intake: The H.O. upper intake will not clear the stock fuel rail on the driver's side. There are two ways to fix this: 1) grind a small amount of the upper intake out where it contacts the fuel rail; or, 2) install an intake spacer.
Notes:
-Wiring: There are no changes to the wiring. However, now would be a good time to do a 3G alternator upgrade.
-Exhaust: 2.25" or 2.5" dual exhaust is recommended.
-Headers: Mustang shorties work and are a direct bolt in when switching to the Mustang H-pipe (with converters or without).
-Transmission: Mustang/Mark 7 Governor. Raises the shift points to match the engines power band.
-Fuel Pressure: Some can get away with the stock pump. But not all. Check your fuel pressure and make sure it's good at WOT.
-Timing: Make sure your timing is correct. If it's off, it'll kill your power and mileage. Bump it to 12-14* for a little extra HP, just pay attention to detonation, if it happens, back the timing off.
Links and additional information included below this article.
Parts Needed:
-E7 Heads: Found on 87-93 Mustangs, 89-92 Lincoln Mark 7's and 87-96 E/F series w/302 (351w has larger head bolts)
-HO ECM: Engine computer (Mark 7 to keep cruise on the 88-91 boxes, 86-88 mustang for the 86-87 box)
-19Lb injectors: 86-up mustang, 89-92 mark 7, 87-96 E/F series trucks (302/351)... They have an orange top.
-HO upper intake: 87-93 Mustang, 89-92 Mark 7
-HO Throttle body
-HO cam: 86-93 Mustang, 89-92 Mark 7
Modifications needed:
-1. Throttle Body: The linkage arms on the throttle bodies need to be swapped. It's easy and straightforward. Grind, swap reattach with screw, JB weld, or actually weld it.
-2. EGR Spacer: The EGR spacer will need to be enlarged to 63mm. A couple minutes on a lathe fixes it up. The 93-95 Ford lightning and some Aussie Fords use a similar EGR spacer if you can find it. Machine shops are usually able to do this without issue for a fee.
-3. Upper Intake: The H.O. upper intake will not clear the stock fuel rail on the driver's side. There are two ways to fix this: 1) grind a small amount of the upper intake out where it contacts the fuel rail; or, 2) install an intake spacer.
Notes:
-Wiring: There are no changes to the wiring. However, now would be a good time to do a 3G alternator upgrade.
-Exhaust: 2.25" or 2.5" dual exhaust is recommended.
-Headers: Mustang shorties work and are a direct bolt in when switching to the Mustang H-pipe (with converters or without).
-Transmission: Mustang/Mark 7 Governor. Raises the shift points to match the engines power band.
-Fuel Pressure: Some can get away with the stock pump. But not all. Check your fuel pressure and make sure it's good at WOT.
-Timing: Make sure your timing is correct. If it's off, it'll kill your power and mileage. Bump it to 12-14* for a little extra HP, just pay attention to detonation, if it happens, back the timing off.