Worst part about a 318 that I have seen is they dont have replaceable valve guides.So then you can get somebody to put bronze bushings in them,or drill them out and put new valve guides in not sure how they do it.Makes working on the heads a little more expensive.The blocks on the few I had apart had very little ring groove.They might not be as good as a 350 Chevy but they are probably as good as a 283 Chevy or a 289 Ford and will probably run twice as far maybe only needing rings and a valve job when you have to fix it.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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