Jerry, you astound me. There are people that ASSEMBLE engines, ones that BUILD engines, and a few that MAKE engines. We are of the dying breed that do the latter. To make an engine for the pull tractor or truck a crankshaft main bearing bore is the first machine operation and then EVERYTHING is indexed off of this. The decks are 45* off TDC of the mandrel through the mains for 90* total; not 89.99999 or 90.00001 but 90. The cylinders are bored exactly perpendicular to the crank and bore spacing is exact. Even the front of the block, the bell housing surface, the pan rail and the top of the block are indexed off of the main mandrel. We then bore the wrist pin holes into rod blanks and piston blanks so center to center on rods and compression height on pistons is exact. The crankshaft is turned from a billet with each rod journal having the exact
center line separation, zero run out on thrust, flywheel, and crank snout, and our preferred journal to counter weight radii. Cam bore and lifter bores are indexed off the main mandrel. We make our own single plug or twin plug hemi heads with two or four valves. All is done on five axis mill and computer controlled everything and runs six figure in cost for TRUE blueprinting. Your Dad was doing this as close as his instruments could measure back in the 50's,truly ahead of his times and probably garnered championships along the way---amazing.
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