The 140 was the same as all Chrysler blocks with a different bore and stroke. 100, 105 and 120 were 2.80 stroke and 3.3125 bore for 99 cubic inch displacement. 125 was the only engine with 2.875 stroke and 3.3125 bore with, I think, 101 cubes. I think the 115 and 135 were 2.80 and 3.375 at 102 cubes while the 140 was the only engine with 2.875 by 3.375 for 104 cubic inch displacement... Thus, if you have your heart set on a 140, you could take a 115 or 135 throw in a 125 crank, and re-port to 140 specification and have a real 140. You can also take a Force big bore 120 and insert a 2.875 crank out of a 125, re-port, and again have a 140. Then just spray it DOVE WHITE--close match for Chrysler color. Since the 3.375 liner is larger, you can not bore out a 3.3125 liner to the bigger bore.
Force engine blocks will definitely fit under the old Chrysler "Refrigerator" cowls and in fact, while it doesn't appear so, the force cowl will fit over the Chrysler block. Like you, I prefer the Chrysler cowling. They just look classic and never go out of style. Additionally, They provide plenty of flat area for decals. I strip mine completely and decorate with large mermaid murals.. Too bad I can not yet post photos but some of my past posts do show the handiwork..
Force mid units and lower units were never changed until about 1989-1990 so the Chrysler cowls will bolt up to them--in fact, until the mid-90s, when Mercury lower units were used, the white Chrysler cowlings will bolt right up. And don't forget, 1984-86 Force engines were white and simply rebadged Chrysler engines with no changes other than the decals. SO: You have a LOT of options.
If you get really desperate and are willing to make the long drive to the Philadelphia area, ( I am not willing to ship a complete engine that large) I have an extra long shaft (25 inch) Chrysler 140, distributor ignition, one piece lower unit engine that I would be willing to part with. If I remember correctly, when I got it I put in four new Wiseco pistons (at over $125 each) and a solid aluminum kingpin (at 80 bucks) so you know it will be pricey. The previous owner had installed the incorrect plugs and all four pistons had a hole in the crown. If you become interested in the future, send me a private message and we can talk.
