Though I'd post some of the most common questions I'm asked and a couple tricks I've learned over the years.
HO Conversion, You need:
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
The 2 modifcations needed:
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. 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.
Common misconceptions:
1. Wiring. There are NO changes to the wiring for the HO conversion.
2. Wiring . There are NO changes to the wiring!
To help you get the most out of the HO conversion:
Dual Exhaust. 2.25" minimum.
Headers: Mustang shorties work with some modification, most people get the H-pipe too and get a cat back exhaust done.
Trans: Mustang/Mark 7 Governor. Raises the shift points to match the engines power band. Transmission cooler is recommended.
shift kit helps too.
Fuel pressure: sometimes you can get away with the stock pump. Check your fuel pressure and make sure it's good at WOT.
Other tips/Tricks
1. Timing is everything! Make sure your timing is correct. If it's off, it'll kill your power and milage. Bump it to 12-14* for a little extra HP, just pay attention to detonation, if it happens, back the timing off.
I will keep this thread open for the time being.
Others can post replies and ask questions regarding the HO conversion.
I will update this from time to time, so re-read it every once in a while.
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