If you don't change plug wires I would buy a spare set and carry them with you. Depending on the vintage many 454's are known for high exhaust temperatures. Even if you do change plug wires I would save a couple of the long ones (so you can use them on any cylinder) for spares. I'd suggest taking a close look at the exhaust manifold gaskets (and entire system) for leaks and take ant necessary action. I have even had to remove exhaust manifolds from my 454's and have them remachined flat to get a good seal.
I drove 454 powered dually pickup's for years but finally had to give them up due to gas prices.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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