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 - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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