Quote:
Originally Posted by deuce_roadster
If the shop that did the machine work was not familiar with flatheads, they could have machined the decks as if they were both at the same angle. I know of a block that was ruined this way.
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The decks are BOTH at a 45 degree angle, but the valve angles are asymmetrical. The passenger side valves are at 49.5 degrees, whereas the driver side valves are at 52 degrees. Cam and cylinder bores are centered in block....crankshaft is offset 0.265" to the passenger side of center. The crank offset has to do with the DeSaxe principle. DD