230 Block

[mozark]

Is there any significant difference between a Military M37 block and a Civilian? aside from casting numbers etc.

Sadly I think I used to know this, but it mistakenly got filed in the "unimportant to retain post 50 years old, information" file." lol

MM

[Matthew Welcher PWA]

To the best that my memory can serve is the oil dipstick may be different. A thread in compared to a press in. And also the oil fill tube, one is a press in the other has 2 studs that hold the tube in place. And also there could be a difference with the rear main seal, a slip in option or a bolt on option. That is all i can think of off the top of my head. I hope this helps.

[mozark]

Thanks

that's helpful.

Michael

[pwrwagonfire]

Oil dipstick is different, and also the manifold on the military one is "sealed" a little better for fording.

I just put a civi 230 into my M-37 last summer, easy swap. Still has the millitary tranny and transfer case. I like it better this way, I can get distributor parts, etc easier at my local napa