Another SHORT TERM possibility is a set of something I can't remember the name for: Basically it screws into where your spark plugs go and then your plugs screw into it. I used those things in a tired old engine with hotter plugs and it quit fouling so much.
52PU's suggestion about vavle seals might help too.
You are gonna have to rebuild sometime soon! Start shopping for parts on E-bay, I've seen gasket sets, cams, valves, rods, etc... for cheaper than elsewhere. Do searches under Chevy 235 AND chevrolet 235
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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