228 motor

[TimMuldoon]

I just found out I have a 228 in my 38 business Coupe which was made in Windsor Canada. To find out we crossed the engine ID with the casting number on the rod. All along I thought it was a 218. The weird thing is it is a truck Motor in a car. it is a 3 3/8 bore. Honestly i will take the added power. I am currently rebuilding it to accommodate 3 7/16 pistons. I am wondering what the big difference is between truck and car motors ? 

Edited November 28, 2020 by TimMuldoon

[greg g]

Heavy duty ones had sodium filled exhaust valves.  Maybe some slight differences in cam and maybe IGN curve but not noticeable by seat o pants Dyno.  I have a 54 Dodge truck dist in my 56 Plymouth 230, does what it expected to do.  Engine swaps were pretty common to keep these on the road, cheaper and quicker than a rebuild. Find a lower mileage rear end wreck in a junk yard put it in over the weekend and drive on.

[keithb7]

@TimMuldoon what determined that your 228 was a truck motor? The reason I ask is to learn. The 228 was also in Canadian cars. My 1954 228 ci Canadian engine (3 ⅜ x 4 ¼), was pulled from a 1954 Canadian built Dodge Regent. As @greg gmentioned it was a good runner, low mile motor pulled out of a wrecked car in the scrap yard. Swapped into my 1938 Plymouth by some young lads over a weekend. Way back in the 60's. I too, same as you, am going to go over to 3 7/16" bore. The 4 ¼" stroke will net us 237 ci. The stock 1949 S13 Desoto, USA built car, used this very configuration. 3 7/16" bore x 4¼" stroke, 25" long engine. A "Spitifre" engine.

 

Find yourself a 4 ½" throw crank, you've got yourself a 250 ci engine. A 4 ¾" crank will net a 265 ci engine. I love the simplicity and commonality of these old Mopar 25" long blocks. You can build whatever bore and stroke you want. Seems the Chrysler boys had figured out a way to offer many engine displacement configurations with simple, cost effective changes.

 

As Tim and I bore up to 3 7/16" , not only will the bore increase, but so will compression PSI. Would be fun to put a 218 head on this 237 ci engine. It just happens I have 25" a spare 25" 218 Canadian cylinder head here...Hmm. 

Edited November 29, 2020 by keithb7

[dpollo]

you will be very pleased with a 228 bored .060 to 3 7/16.    all the Fluid Drive Dodges in Canada used the 228, so also did the Plymouth in 54-55.