Help identifying pistons and cylinder heads
Look under the head, valve side pictured below you’ll find some numbers. The air injection ports, the small holes under the exhaust ports point to a smog gear head. IIRC, they started that in the later ‘70’s. I’ve seen them plugged with JB Weld, aluminum foil, but the best way to seal them up is tap to a 1/4-20 and use Allen head studs sitting below the surface and with red loctite to keep them there.
The head will port out reasonably well. Accept the next valve size up EZ. If it’s a 1/88/1.60 head, you can go 2.02 no problem.
Look under the head, valve side pictured below you’ll find some numbers. The air injection ports, the small holes under the exhaust ports point to a smog gear head. IIRC, they started that in the later ‘70’s. I’ve seen them plugged with JB Weld, aluminum foil, but the best way to seal them up is tap to a 1/4-20 and use Allen head studs sitting below the surface and with red loctite to keep them there.
The head will port out reasonably well. Accept the next valve size up EZ. If it’s a 1/88/1.60 head, you can go 2.02 no problem.