Gregg, You can put an engine from a Petertbilt into a Volkswagen, if you set your mind to it. But I assume your question is about the practical nature of the swap and the obstacles to be encountered. 

The answer is yes, the swap is possible but the mixing of parts required to get a "bolt-up" at the transmission will be challenging. I do not know about the length of the two engines and the space limitations. It is definitely not a drop-in deal.

What are you trying to achieve? Do you have a bad engine? Do you want to go a little faster?

Mike

The 41 engine will not bolt up to the 33 bell housing   nor will the flywheel .      You are poking a barrel of snakes.

Mike, 

Thanks for your reply. My goal is to keep advancing my restoration project on the 1933 truck. My 216 is stuck, and I am expecting to find pitted cylinder walls, (I have not had the head off in many years). The fully running 235 is being gifted to me from a friend's project. I will keep the original 1933 4 speed trans., torque tube drive shaft and differential. 

Prior to going to the extent of pulling both engines and transmissions to compare mate-up details, I thought I would reach out to the Chevy community to gage what challenges I may run into with this potential swap. If the shafts are compatible, I assumed I will need to use a different bell housing and/or have the machine shop modify mounting holes on mine.       

What I am primarily looking for is diameter and spline count on engine and transmission shafts for the 216 and 235. I have not been able to find this info in any of my manuals or online. Of course, any other advice would also be greatly appreciated. 

I am not seeking more speed out of this 91 year old hauler, I would just like to put it back on the road again. I also drive a 1953 Studebaker 2R10 truck, and its 90 hp flathead 6 Champ motor gives me all the "high speed" thrills I can handle!  😀

Gregg

@gregg-l-gaber The 216 I believe first came out in 1937. Are you sure you have that engine? If so then I think any 235-261 later engine will bolt up . For more info go to https://www.stovebolt.com/techtips/engine_swap_216.htm

Posted by: @steve-d

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@gregg-l-gaber The 216 I believe first came out in 1947. Are you sure you have that engine? If so then I think any 235-261 later engine will bolt up . For more info go to http:// www.stovebolt.com/techtips/engine_swap_216.htm

Steve did you mean 1937 instead of 1947? I can fix that for you if you wish.

@tiny Yep-foiled by google.

Gregg, here is a web page over at the Stovebolt site that has a good amount of how-to info. They swap lots of stuff over there: https://www.stovebolt.com/techtips/

Cheers, Dean

@gregg-l-gaber Gregg, As Steve said, if your engine has already been swapped to a 216, you should have little trouble making the change to the 235. I believe you can use the bell housing from the 216 on the 235. The water pump shaft is usually too long when a 235 replaces a 216. The regular vendors have a conversion pump (Jim Carter, for sure).

If you still have the original engine, the situation will be quite different. I will be glad to help. if I can.

Mike