So I checked out the crank this morning and it is a cast crank #3462387 which is late 72' -73' 340 . I did take some pictures but will try to upload them later . The crank flange looks as thou someone had a difficult time removing a flex plate or flywheel . They used a cutting torch ,cutting part way throu the flange between two bolt holes .
The pistons are #3671155 and using a vernier height gage the pistons look to be approx. 65 thousands of an inch below the deck at TDC .
