Yes it is, also when removing the intake manifold be careful of the heater hose fitting toward the front of the engine they commonly break inside the manifold which in some cases require extracting the broken piece and re tapping the threads
is it just a problem w/the manifold gasket or w/the manifold itself. had a lincoln(perish the thought) once and it had a pipe under the manifold that cracked and leaked like a sieve-plastic manifold-replaced w/a cast older manifold and that fixed it. is this similar?
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