Usage:
Early 3408 and 3412 Engines
There have been problems with broken studs and exhaust leaks on early 3408 and 3412 Engines. The Service Magazine articles that follow tell of changes to prevent the broken studs and leaks. The March 2, 1981 article tells of changes for 3408 Engines. Change the article to show that the parts are also adaptable to 3412 Engines in all applications.
August 27, 1979 - Page 8
"Exhaust Manifold And Air Lines Groups Changed To Prevent Exhaust Leakage".
November 17, 1980 - Page 4
"New Exhaust Manifold Group And Air Lines Groups Used To Prevent Exhaust Leakage".
December 1, 1980 - Pages 2 and 3
"Exhaust Manifold And Air Lines Groups Changed To Prevent Exhaust Leakage And Damage To Manifold Gaskets And Mounting Studs".
February 2, 1981 - Pages 3 and 4
"New Exhaust Manifold Has Slilp-Joint Connections".
March 2, 1981 - Page 2
"Two New Exhaust Manifold Available For Replacement Of Single Rear Manifolds To Prevent Broken Studs".