| Pontiac Engine >> ELIMINATION OF END BOLTS ON EXHAUST MANIFOLDS |
Elimination Of End Bolts &
Locks From Exhaust Manifolds On
GM (Pontiac) Engines Except Super Duty
All GM (Pontiac) engines after serial number 191552, except the super duty engine, will have the front and rear end bolts and locks omitted from both right and left side exhaust manifolds.
The drilled holes in the exhaust manifolds have not been removed, and the cylinder heads will still have drilled and tapped holes. These end bolts and locks have been removed to improve the durability of the exhaust manifolds.
Caution: Do not install bolts or locks in these end holes.
The AERA Technical Committee
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