[TRADERMIKE 2012]

One more picture of the Cylinder Bore measured @ the top, middle and bottom of each Cylinder. We measured the approx. Stroke and the legend depicts the Head Bolts, Coolant passage open and closed with a plug. The closed ones mean that someone has been into these Heads doing the Pontiac water Jacket mod. I think. The Head Gaskets look like they were installed in 1968, one year after the Motor was cast from the factory. We on the PY forum believe that this motor was modified after the original sale, we don't know if the Engine was ever installed in a Vehicle or not. Since I have additional #'s and letters scribed into the pass. side left Head area in front, conscientious is that the owner at that time purchased over- the- counter, the Tri-power Intake Manifold and Carbs., plus Installed the 1956 Tri-power Cam as the racers would do in those days. Since the 1967 Pontiac 428 ci Engine should have the Quadra jet Carb. and the 4bbl Intake Manifold plus the 066, 067 or 068 type Cam. I was told upon buying this 1967 Pontiac TA with the 1967 Tri-power 428 ci HO engine was taken out of a wrecked truck that went over a mountain in the Carolinas while Bootleggers were on the job.

P.S. I don't see any water passages that are closed off on the Heads, perhaps all the necessary work was done at the Block, if that is at all possible? I need some research on this point. Someone knew what they were doing with this particular Engine, perhaps a race car drive? Otherwise, how did this Motor end up shining?