I have a 1967 (A 22 7) 3959512 block, which is the casting number for 62-7 327s. Now, here is what I know (after more than 35yrs jacking with old Chevys). ALLLLLLLLLLLLL 67-earlier small blocks have small journals, with ONE EXCEPTION----------1967 SS350 Camaros had a large journal block. ALLLLLLL 67-earlier SBs have a crankcase vent hole in the rear next to the dist hole. Right? ALLLLLLLLLLLL 67-earlier SBs have the filter pad cast/machined for a filter canister. Right?
Well, here is what I have:
1967 3959512 block (Jan 22)
BIG journal block
Crankcase vent hole in rear
Filter pad cast/machined for SPIN-ON filter
UNFORTUNATELY----------the block has been surfaced, so the code is gone from the stamp pad.
It has been bored .040, which, of course, means someone has been in there before.
IT CAME WITH A BIG JOURNAL---------FORGED, YES, I SAID FORGED, BIG JOURNAL 327 crank. Did ANYTHING besides 68 L-79 327s and some trucks get a BIG journal 327 crank? I can't find a date on the crank.
So, engine guys who know more than me, what is this block? Was it from a 67 SS350???? Or something else? Its not that big of a deal, I'm just curious. I'm going to build a 383 out of it (or I guess 385 since its .040 over).