Thought I would try local before eBay.
I only need the block or possibly the shortblock
Looking for casting numbers:
340220
364776
473478
3782870
3925521
3937726
3955276
3969858
10069284
Prefer a virgin 
I think my dad had a 454 block laying around, I will check with him tomorrow.
I think he said it was an ls6 block out of a chevelle from around ~1970 or so. Are those the tall deck ones?
Tall decks were in buses and medium duty trucks (ie:dumps . . .) 366’s and 427’s…I need a 427 one.
If it’s an LS6, it’s a short deck. Also if it’s a LS6, I can’t afford it. 
If you can, send me the casting number and the block stamping. I have a good reference book and I can give you the history on it.
thanks
good luck on your search