Tests to measure iron levels include: 1  Serum iron. 2  This test measures the amount of iron in your blood. 3  The level of iron in your blood may be normal even if the total amount of iron in your body is low. 4  For this reason, other iron tests also are done. 5  Serum ferritin.
one symptom of a cracked manifold will be a visible crack that you can see on the manifold s surface to look for a crack look closely at the manifold particularly where it bolts up to the motor and where the most heat will be
Chevy now has a new manifold and gasket out to address this problem. They supposedly had to do it to meet the leakage requirements on the new. engines. I just did the manifolds on my '89 454 and so far, it is dead. quiet.