Engine replacement

[Bob Carriere]

The 270 engine family is longer than the 216/235/261 GM engines and will require cab/frame modification....... not impossible but not as easy as a shorter GM block.

Cheers

[Hanno Spoelstra]

I know Bob, but they are relatively plentiful here, rather than the Chev engines. Since Markwin's Chev is already converted with a Perkins diesel, the GMC 270 may fit without a lot of conversion work.

[Bob Carriere]

How the Perkins was fitted..... and what was required.

The 270/292 usually require moving the radiator forward as it should bolt right up to the CMP tranny.

Cheers

[Markwin Serlui]

Ouch...i was hoping a cckw engine would fit like Hanno said...

[Grant Bowker]

If you have somebody local who has a C60X, you will be able to study how General Motors did the design work to put a 270 CI GMC motor into a CMP frame. They did have to use different rear motor mounts, different mounts for the radiator and extend the grille about one inch. There were probably many other small changes as well.

[Alex van de Wetering]

The bare block of a 270 is about 72cm long, while the 216 sits at about 68,4cm., so little over an inch longer, which resulted in the 1inch grill spacer on the C60X as Grant mentioned.

But, maybe a 235? 235's do pop op on the Dutch markplaats website. You probably need to change a few things to make it work on right hand drive(?).

Or maybe a Bedford engine? they seem to be quite similar in design.

Alex

[Grant Bowker]

The early 235 is a simple replacement, nothing to change.
The later (about 1953 onward) 235 and 261 Chevrolet engines are the same physical size as the 216, fit very well, but usually need an adapter plate and an earlier water pump to make the fan placement correct relative to the radiator. These are simple bolt on changes. The CMP flywheel housing and clutch bolt to the rear of the engine without problem. Some late engines do not use the front mount like the 216 but use 2 side front mounts. This can be changed without great difficulty although you may have to remove the front timing cover and parts to get to the front mounting plate (the plate is the same shape but may not have the holes in place for the front mount as used on the 216).