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Bellhousing Bolt Patterns for 2.3 and 3.0 M5OD Transmissions: Dimensioned!


Joined
Dec 5, 2023
Messages
7
City
Washington
Vehicle Year
1993
Engine
2.3 (4 Cylinder)
Transmission
Manual
Total Lift
4"
Tire Size
32
I spent a lot of time looking for dimensioned drawings or CAD models of the transmission bolt patterns (for reasons). None existed as far as I could tell. I tried perspective flattening, tracing, and scaling images from google, but was having a hard time trusting them. Finally I had the opportunity to make a rubbing of my 2.3L M5OD when I had it out of the truck last weekend to replace my slave, clutch, pressure plate etc and I went ahead and made a dimensioned "drawing".
I can't use CATIA anymore so these are pretty terrible "drawings" just from Fusion's sketcher (free version doesnt let me make real engineering drawings) so sorry about that.
My friend with a 3.0 truck also had his transmission out the other week and I got the dimensions for the top 6 holes from him; but pay in mind, I did have to get the starter bolt hole locations for the 3.0 drawing by tracing images, so I can't guarantee their placement's accuracy past probably ~1/4".
The top (engine) holes in the 2.3 drawing will be exactly the same for any 2.3 Lima engine, and the 3.0 drawing's the same for any Vulcan. However, auto trannys may have had different placement on the bottom (bellhousing -> starter and plate) holes, so don't assume ;)
The 2.3 drawing is from a 1993 truck and the 3.0 from a 94.
Let me know if you want a .stp of the whole outline of the 2.3 bellhousing. it is pretty close to the real shape, at least as close as my $20 calipers from college could get me. Hope these help somebody.
ps. starter is on the passenger side in the 2.3, vs. on the driver's side on the 3.0, so the 2.3 drawing is shown "looking towards the back of the truck" (at the front of the tranny) while the 3.0 one is looking towards the front of the truck. I think it's on the driver side too on the 4.0 but cant remember. When I get the opportunity I'll work on making a drawing for the 4.0 as well but have no idea when/if I'll have one apart
 

Attachments

  • 2.3L bellhousing.png
    2.3L bellhousing.png
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  • 3.0L bellhousing.png
    3.0L bellhousing.png
    173.7 KB · Views: 835
Last edited:
You know who will use this information more than anyone else? People converting their trucks to electric and needing to make an adapter for the motor.
 
Nice drawings. Thank you for sharing.
 
I spent a lot of time looking for dimensioned drawings or CAD models of the transmission bolt patterns (for reasons). None existed as far as I could tell. I tried perspective flattening, tracing, and scaling images from google, but was having a hard time trusting them. Finally I had the opportunity to make a rubbing of my 2.3L M5OD when I had it out of the truck last weekend to replace my slave, clutch, pressure plate etc and I went ahead and made a dimensioned "drawing".
I can't use CATIA anymore so these are pretty terrible "drawings" just from Fusion's sketcher (free version doesnt let me make real engineering drawings) so sorry about that.
My friend with a 3.0 truck also had his transmission out the other week and I got the dimensions for the top 6 holes from him; but pay in mind, I did have to get the starter bolt hole locations for the 3.0 drawing by tracing images, so I can't guarantee their placement's accuracy past probably ~1/4".
The top (engine) holes in the 2.3 drawing will be exactly the same for any 2.3 Lima engine, and the 3.0 drawing's the same for any Vulcan. However, auto trannys may have had different placement on the bottom (bellhousing -> starter and plate) holes, so don't assume ;)
The 2.3 drawing is from a 1993 truck and the 3.0 from a 94.
Let me know if you want a .stp of the whole outline of the 2.3 bellhousing. it is pretty close to the real shape, at least as close as my $20 calipers from college could get me. Hope these help somebody.
ps. starter is on the passenger side in the 2.3, vs. on the driver's side on the 3.0, so the 2.3 drawing is shown "looking towards the back of the truck" (at the front of the tranny) while the 3.0 one is looking towards the front of the truck. I think it's on the driver side too on the 4.0 but cant remember. When I get the opportunity I'll work on making a drawing for the 4.0 as well but have no idea when/if I'll have one apart
I'm not sure if I would ever use it, but I'll take a copy of the STP file.
Thanks!
 
You know who will use this information more than anyone else? People converting their trucks to electric and needing to make an adapter for the motor.
Bet you're right! Or hopefully for something like a 1.9 TDI swap, haha. That's my plan one day, whenever I find a 4x4 truck with a blown motor :P
 
Screenshot from 2024-08-19 19-59-16.png

Working on my 1993 ranger front frame CAD model. I may be scheming something. The "engine mount - mount" / "T-beam mount - mount" / "engine cross member" thing is tricky to model, especially since I'm working from just IRL measurements (very difficult to take with nothing disassembled) plus pictures from an old ford truck forum thread.

I have to model all the holes, and then the engine mount seats and stock engine mounts next (very tricky, hopefully I can find some good pics of just them to trace).

RWD standard cab manual, 1993. if you want a copy of my model when it's done, let me know. Also let me know if you want a tired out (but free) 200k 2.3 lima in a month or so that needs overbored/re sleeved/ decked...... lol

Posting here because this random thing doesn't need its own post
 

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