Engine conversion: Dodge flathead six to a '50 Ply.

[David Pollock]

this should be a bolt for bolt swap unless the engine is from a 57 to 59 in which case the front mount plate and water pump must be changed.  The flywheel on the 218 may have only 4 bolts but it will fit on the eight bolt flange used on the 230. Remember, one hole is offset.  Sometimes the 4 bolts as on a 218 are installed from the engine side ( the nuts are on the clutch side of the flywheel)  it is necessary to remove the rear main cap to set things up this way.

If you use the 218 head on a 230, a good boost in compression is achieved without compromising the area around the valves. 

I have a  230 crank and rods as well as the 218 head in my 50 Ply. Cranking compression at normal 6 volt starter speed is 135 lbs,  Excellent power, espescially low end torque and 25 to 28 mpg running in overdrive at a steady 60 miles per hour on the highway.

[chetbrz]

I have access to a 50's Dodge flathead six engine. Will it drop in my '50 Plymouth without alteration? Thanks ...Jack...

The 50 Dodge used a 230 which was the same block as the Plymouth 218 with a different stroke.  You might have a different flywheel bolt pattern depending on whether the transmission was fluid drive in the Dodge and Standard in the Plymouth.  Should be a drop in but I haven't done it.  I currently have a 230 D24 that some day I might drop in my 48P15 that is when the 218 gives out.  I know for sure that the motor bolts up no problem.  You might have to change the flywheel.

Chet...

[JackM]

I have access to a 50's Dodge flathead six engine. Will it drop in my '50 Plymouth without alteration? Thanks ...Jack...