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Our truck has the 1980's updated Zenith carb on it (see photos), and it still runs somewhat rich, especially at idle or low rpm. Even so, both a friend and my son have followed the truck at speed and it still stinks and makes a huge heat cloud under and around the bottom of the truck, like a...

If you have all the parts and pieces ready, and don't have to wait for the machine shop to surface the manifolds, it should take no more than 4-6 hours with two men or a real good hoist setup. The combined assembly is very heavy, so it takes two guys to lift and hold it in position both in and...

Some more photos. Shows original intake after we took the broken exhaust off it.

Ever since we got the truck, the exhaust manifold center outlet has been broken, and it was slowly getting worse. Finally, this spring I removed the unit from the spare parts truck and had it cleaned up at the local machine shop. We installed it yesterday in the misty rain.