It's an antique 67 or 68 396 cubic inch BBC. Probably a 325 or 350 HP.
If you're planning to put it in a S10 there are lighter better choices than a 52 year old BBC.
Fully assembled they're heavy unless you plan to buy expensive aluminum heads for it.
The cost of those heads would buy you a nice 5.3, 5.7, or 6.0 LS engine that is lighter, more powerful, and more efficient.
@Lonnie P the guy want 500 for the block, crank, and the orange heads. I don’t think it’s worth it in hopes of finding the dude with the matching car. Not to mention the he could be the guy with the matching car. Haha. I could see hot that could pay off tho. Thanks for the input
If you can't find a good 454 core where you're located, come on down!
Small bore shrouds valves and inhibits flow. When GM made the "next" block, bore was 4.250". Combine that with the crank in the one you're looking at makes a 427, the most "legendary" engine Chevy ever built.