I bought a Chev 235 that the previuos owned salvaged out of a truck he bought for parts. Compression is very good at 145 to 155. If fires up and idles nice we decent oil pressure.
But rev it up and it smokes pretty bad. Like hope the neighbors don't call the fire department. With fresh plugs it blacken'd all 6 fairly quickly. I tried running it for about 3/4 hr with seam foam in the oil,gas, and down the carb. No improvement. There was oil dripping from the exhaust, but that could be from all the sea foam down the carb.
Running 10-30 oil. It has hydraulic lifters, block number says a 58-62. Any ideas? I'm putting the motor in a 29 Olds coupe which is a big enough project, I was hoping to not have to tear the motor down right now. Any ideas ? I'm supprised with the compression being that good that it push that much oil past the rings.