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This goes back to my thread about my car not running well on 91 octane. I just pulled a plug and got a picture of it. All the plugs look like this. I've looked at several charts on various Internet sites but none look like this. Thanks.

When I built my engine I measured everything except the cylinder volume and the combustion chamber volume. I don't have the stuff needed to measure liquid volume. But, here are the specs that I was able to measure; Bore: 4.08" Pistons are 0.020" above the deck. (The block required decking of...

I've been thinking about eliminating the PCV connection on my carburetor and just using breathers on the valve covers. The PCV system is a controlled vacuum leak. I'd rather just put fuel and air through the engine and not add an oil laden mist. Anybody else do away with the PCV valve and hose...

I use the Edelbrock manifold gaskets that block off the heat crossover port but, they burn through. It's happened twice so, obviously, I need to do something better. I don't drive the car in cold weather and don't need the heat under the manifold plenum. I've seen people stuff wadded up...

I just pulled the intake manifold off my 340 in preparation for pulling the engine and transmission. The bottom of the intake plenum is bone dry and clean. But, look at the intake ports on the heads. I haven't run the engine for two weeks. Yet, they are wet. Is it because of the PCV system...

I've got a set of "O" 2.02"/1.60" heads on my 340 now. I would love to get a new set of Edelbrock heads but don't want to spend that kind of money. So, I thought I'd gasket match the intake and exhaust ports and clean up the castings some in order to help the air flow and take full advantage of...

I know there have been countless threads about which oils are best, which have the highest levels of zinc, etc., etc. I switched to Valvoline VR-1 20w50 racing in my 340 Dart earlier this year. Just before I put it away for this winter I changed the oil and filter and sent an oil sample for...