Hi Folks,
Th other day I had some correspondence with Rockwood, he asked do I have 25" or 23" block in my D24. Funny, but I could not answer. I have not touched the engine itself, but pullet oil pan for cleaning only. Have had no reason, because it is working well. Therefore I actually have not either paid much attention, which design it is. By the numbers it is most likely the original installed 230.
While I tried to understand the 23"/25" block question, I found the following posting in Allpar forum:
"The Plymouths and common Dodges used the 23"
engine that stopped growing at 230 cubes.
After WWII the De Soto's had 236 Cubes and the
same era Chrysler's had 251 Cubes. In a
couple of years the De Soto became 251 Cubes
and the Chrysler version became 265 Cubes.
Some where in this story the larger Dodge
Trucks and the Farm Hay Bailer's started
using the 25" engine.
The "Hot Rodder's" also learned a 25" block
could be bolted to the Dodge Transmission
for some instant cubes, and torque.
When one see's the SpitFire on any vehicle
other than a Chrysler, this means a "trans-
plant" has happened. All this name means is
a marketing ploy. The compression and all
is the same after WWII until starting about
1952'ish.
The De Soto Piston Part Number for a 1947
236 cubed "S-11" engine is the same as a
1949 Chrysler 251 cubed engine.
And they used the same M-6 Transmission."
Do I understand correct, that all '46-'48 US made Ply's & Dodges were originally "short block" 23" engines?
You are supposed to find the "long block" only in a DeSoto or C.Windsor from that three yrs era?
Further, no use looking for "Spitfire"-logo head or canadian made exhaust manifolds, because they are for the 25" engines only...?