If it's already .060 over and has too much taper you are unlikely to be able to bore any farther without issues as the cylinder walls start to get real thin. The only one I would buy is the original block for my wife's GTS and that would be just to have it.
it's not necessarily scrap, but economy starts to become a factor as well as limits of the block-- taper, strength, heat control, etx.
I agree toolman, I think it may be a 318 out of a truck or van, by the shape of the oil pan. I would also assume the heads are from a later SB and not a 340. No X,J,O or U castings on the heads.
Could also be a Van pan, I have one and the best part of it is, they are 6 Qt. pans, not 5 as in a car. I think having the "J" heads, it could be a 360. which can in the vans and trucks in the 2 BBL platform. I found many "J" heads that way. I made a comment, not seeing a head marking earlier, but retrack that now after seeing a close-up of the heads. I installed the windage tray from my 340 when installing the deep pan as in photo. You just need to use the same pick-up as in the truck or van pan.
I found 2 340s in salvage yards transplanted into trucks and one in a van. Always check numbers
same here. i found a 340 in a van with a 2bbl intake on it. i was looking for mini starters and just happened upon it. never know what you'll find lurking about...
The photo in post #16 says J heads. J's are 188/160 valve heads and are open chambered. 70-71 360 or 72 340/360. The OP needs to do his homework or not pay much for it because of the unknowns. How about the numbers on the block, drivers side front below the cylinder head on the deck surface.
I had a 70' 340 in my van, but took the motor and Trany out for a rainy day, then scraped the van in 2020 when I moved. That is how I know it is a van or truck 6 qt. oil pan. Remember, the 360 is different and will not work on the other small blocks. The truck or van pan will not work on a stock A,B or E body. Sump is different.
NO JOKE!!!!! A friend called me one day and asked if I would help him move his "Henery J" to the other side of his property. This is what it looked like. Part of the frame was still there, but that was it. Motor and Trany gone.
