I'm betting on it being a run of the mill 350 with that 2442 suffix. using the dial caliper measure from the bottom of the small end to the top of the big end and then measure the id of the big end and we'll more than likely discover that they are 5.7" rods, which will all but verify that's a 350. While you're at it with the dial caliper measure the rod journals and post everything you get. Get us all in on it.
Even if you keep it as a 350 it has to be bored, based on someone saying it had 1.540 ch quench killers. Machine shop pistons typically, which indicates it may have been bored once already.
guess it could be a short rod 383 but I'm not feel'in it. Ordered the dial caliper on Ebay huh?
I'll wait until the dial caliper comes in and quit guessing. What are the head casting numbers again?