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raceron1120 · 07-29-2019, 02:07 PM

The heads are ECK-B, according to the yblock tech page they are 55 TBird 292 cid. The heads used on the rebuild are ECZ-B or -C.
I have a room with a bunch of Yblock stuff including 2 or 3 assemblies. One complete motor is a 272, dark red almost burgundy/maroon color. Another is red, I think it's a 292 but didn't dig down to find the casting #s on it. 3rd one is a boat-anchor
'54 239, also red. Unknown if they are unmolested originals, or rebuilt/replacements.

07-29-2019, 02:07 PM	#18
raceron1120 Senior Member Join Date: May 2010 Location: Ellsworth Michigan Posts: 1,807	Re: original paint y blocks The heads are ECK-B, according to the yblock tech page they are 55 TBird 292 cid. The heads used on the rebuild are ECZ-B or -C. I have a room with a bunch of Yblock stuff including 2 or 3 assemblies. One complete motor is a 272, dark red almost burgundy/maroon color. Another is red, I think it's a 292 but didn't dig down to find the casting #s on it. 3rd one is a boat-anchor '54 239, also red. Unknown if they are unmolested originals, or rebuilt/replacements.