I have a chance to buy a standard 312 block and crank.  I am going to check it out soon and was wondering a fair price to offer.  I think it will be only the block with maybe the rods, and the crank.  According to the seller it has been cleaned and magnafluxed.   I don't have a dial bore gauge, is there a quick way to measure bore, and journals.  I was thinking some calipers to give me a rough estimate.  I know the Id#'s and sizes to look for, anything else I should check out?  Appreciate any help.  Was going to rebuild my 292 but might go with 312 if checks out.

Check the main bolt threads for cracks, some engines were over torqued and cracked the block in this area. Good cranks for a 312 go for 250 to 300, if all parts a good, i would pay as much as 400 if i needed the parts, less if it is just for future use.

Gary Ryan San Antonio.TX.

Thanks.