I would know this if 60yrs ago, anyway my boy got a CList $75 Late 239.
It was suppose to be froze up, but not just couple stuck valves. I tore
into it Sat nice and clean, valves are Ford no ridge bore measures std
with .0035 wear no cracks anywhere. question I know my 8RTs and 8BA's
but whats a ECM 6030 D Ford script heads? Is this Foreign or Merc. something.
I have not measured the stroke yet. It has truck pan -fat belts- late bell
housing. Also the seller has a crate of new Ford water pumps with double
pulleys??? never seen double pulleys on pumps or ECM heads maybe this is
industrial or something. pumps have Ford scripts also..
I think I'm going back for some pumps $20 and they are truck pumps.
any ideas sam

 

ECM sounds like a late Merc head, same era as the EAB Ford. I don't have any catalog to confirm. Sounds like a score overall, if it's a Merc engine, but Merc heads are near worthless on anything else.

 

Thanks but I do have Mercury heads on the shelf and say 8CM with
Mercury written on them. They say Merc heads are higher comp.
whats confusing it says ECM 6030 D and says Ford on them???
sam

 

Merc heads have larger combustion chambers than Fords, putting Merc heads on a Ford 239 lowers the compression ratio. On a Merc engine, they result in the same C.R. as a Ford 239 with Ford heads. Putting Ford heads on a Merc engine boosts C. R.

8CM is the Merc series corresponding to the 8BA ('48 - '50). ECM is the '52-'53 Merc 255 series corresponding to the EAB Fords, as far as I know.

 

It would be great if you could identify the water pumps. If they are for 54 high mount pumps guys could use them.

 

not for 54 Abe definatly flathead truck wide belts.