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Old 03-23-2006, 09:54 PM
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5.0 EFI & AOD INTO 55 FORD WAGON

Hi,
I recieved many positive responses about converting to the 5.0 EFI and AOD into my wagon and I am getting closer to actually doing it, I purchased a mercury monach for parts and it had a good running engine and trans was good also I have purchased electrial wiring diagram books for the Grand Marquis wagon and the 55 ford.
I yanked the motor out of the Monarch and used it as a template to see how every thing will fit I put in new motor mounts and it physically fits except for one thing the front sump oil pan hits the cross member and I need the front sump pand as I plan on using Wurthit Designs rack and pinion steering which requires a front sump pan looking at the Mercury oil pan it has what seems to be a smaller sump in the front I looks like it will fit and the rear sump will not hang below the crossmember I plan on useing spacers above the motor mounts to gain the small amount of clearance I will need if the new pan hits the cross member, Has any one else had this problem putting in the 5.0 EFI??
The Monarch is a 1980 with a 302 and the trans says on the casing C3 is this also a AOD? and are they close to the same dimensions of the AOD? I also purchased a set of headers for a 5.0 Mustangwitch fit almost perfect I have heard I might get an extra 10 -15 hp I am planning to run 2.5 exhaust also.
I know it is going to be a big job but from what I have heard it will be a fairly easy conversion. Any suggestions will be greatly appreciated
Thanks,
FORD 2 DR

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Old 03-23-2006, 10:11 PM
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C3 is a three speed automatic. The AOD is based loosely on the FMX trans. Not sure how the AOD compares to the C3 sizewise. If you do pick up an AOD try to get an '88+ transmission as Ford made some improvements to them. Stock AOD's can be a bit on the fragile side, but can be upgraded. Make sure you properly set the throttle valve (tv) cable or linkage.
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Old 03-24-2006, 06:07 AM
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one possible pan fix is use a Bronco or van pan.....hard to tell without a pic'

there are a "bunch" of different stock configurations/shapes of pans since 1963!
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Old 03-24-2006, 07:44 AM
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Quote:
The Monarch is a 1980 with a 302 and the trans says on the casing C3


OK...I am confused. You say the donor is from a 1980 MERC MONARCH and has the dual sump pan. A 1980 should have the front sump on it. The pan shape was changed in 1981 when it was designed to fit over the original rack installation (McPherson Strut) (chassis/sheet metal redesign). The 1980 302 was carbureted, so there must be some confusion as to the donor year.

Is your EFI throttle body or multi-port?

The designation C3. Is it located on an I.D.Tag or is it a Casting I.D. No? The actual C3 is a French derived transmission used only for economy during that period.

BTW- 63/64 GALAXY 289 mounts will allow proper positioning of the SBF in this earlier chassis.
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Old 03-25-2006, 12:26 AM
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5.0 conversion to 55 Ford

Hi,
Sorry about that the Mercury Monarc is a 302, The donor car is a 1986 Mercury Grand Marquis 5.0 multi port EFI.
The Oil Pan is off of a Mustang 89 I believe.
C3 is on the casting of the transmission.
I posted pictures of the oil pan in my album

Thanks for your time.
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Old 03-25-2006, 01:41 AM
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Quote:
Originally Posted by FORD 2DR

Sorry about that the Mercury Monarc is a 302,

The donor car is a 1986 Mercury Grand Marquis 5.0 multi port EFI.

The Oil Pan is off of a Mustang 89 I believe.

C3 is on the casting of the transmission.
It's OK...No use in being sorry...my reading comprehension lacks at times...

The pan you show will not work on the 55. You need a front sump 1980 and before. How did a MONARCH get into the picture? That pan (80 302) should work with the R&P upgrade.

The 5.0L shown is not an HO. It should have an AOD attached.

The C3 at the beginning of the Casting I.D. shows the trans as being a C4.
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Old 03-25-2006, 07:40 AM
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Trans is almost certainly a C4, Ford did not put any C3s in Monarchs from the factory. I don't think they would handle 5.0L torque, the AOD was not available in the Monarch in 1980 either. They did use some FMXs -- you can tell them easily by the cast iron center case (instead of aluminum on the C4).

Side trivia note for Kevin Varnes: the AOD design was a direct adaptation of the FMX, sponsored by (among others) the then-Fairfax plant manager, Glenn Boston, who was looking to prolong the life of the plant with a new design that could reuse some of the old equipment and processes. Because of space issues and union issues, the AOD went to Livonia, and there was a follow on AOD II program that would have replaced the C3 in the states... but then the world started to go FWD and the AOD II program died unborn.
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Old 03-25-2006, 03:46 PM
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If your planning on performance mods, cam etc.. I would use a mass air conversion kit, mass air is friendly to performance mods, the earlier speed density efi controled cars are not, and idle quality and performance will suffer..


2wld4u
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Old 03-25-2006, 08:17 PM
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I did a similar install using an EFI 302 from a 87 ford van. The intake looks different, but the principle is the same. The van motor was a speed density system (no mass air meter) although if yours is a mass air system it's no big deal. You can see the install I did in my journal.

check out http://fordfuelinjection.com/ there some good info there too.

Good luck, looks like a cool ride
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