hi

I thought I remembered checking out an old thread that went into depth about the painted letters, usually A B C or D on the side of the block designating cylinder size

can anyone find that for me?
I cant

thanks

It is first mentioned here.
https://board.moparts.org/ubbthreads/show...part=4&vc=1

Then it's discussed a little further on the next page. I'm not sure if there was a thread dedicated to it or not.

The letters weren't always painted on the side, they were sometimes stamped in the pan rail.

IIRC, a C bore was spot on dimension while A and B were a few ten thousandths undersized and D and E were a few ten thousandths oversize. Pistons were marked to match the bore size.

Have a 66 hemi block - each letter is stamped in the pan rail - have 3 wedge blocks - none have any markings painted or stamped

I saw a 70 GTX 6 barrel block with it on the side, my 95 Neon block even has it, but in the end.

2.2/2.5 were painted.

Wow, that's neat. Recall seeing the painted letters on blocks but didn't know, specifically, what they meant.