If you have the EBU block, that is the big cam journal 1954 version of the 239.  Not the best because cams are hard to find  and there are problems with using a later intake..

The EBV is the later version that has the cam journals the same as the later Y blocks (272,292, etc).  Basically, they were 55 truck blocks based on John Mummerts data.  The EBV may have been available in late 54, but John's info does not show that..

Don't get confused with Cleveland vs Detroit blocks..  While relevant, The casting letters with the 6015 after them (EBU, EBV) are going to tell you what year/size the block is.  There are exceptions to this rule regarding 292/312 blocks in the later years as the 312 blocks had the same letters as a 292.. 


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ