IML: 440 sunken valves
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IML: 440 sunken valves




Pulled the heads off of my 72 Imperial today. I have got several sunken exhaust valves which probably means the seats are gone.Could notice the different heights when the rocker arms were removed. Half the valve seals are useless.How do you get the drivers side exhaust manifold to clear the studs? Removing the engine mount bolts and jacking the engine makes things worse. Remove the engine mount and drop the engine? That is what I am thinking. Timing chain was trash but the nylon teeth were still on the sprocket at 105,000 miles. Very little carbon. This engine is stamped H 440 with 1 and 24 under this. Any idea what this means besides the 440 designation?


Robin Giesbrecht
1972 Imperial




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