Fox Mustang Magazine Issue 10 | Page 44

RESTORATION 4 The 5.0’s heads and block are magnafluxed to detect cracks that can’t be seen by the unaided eye. 6 Each journal is measured with a digital micrometer to assure correct tolerances. This spec is the same for each rod. Each one ends up the same size. Ditto on the crank journals — they’re a consistent size for each one. 44 FOXMustangMagazine.com 5 The stroke of the crankshaft is measured to verify it is within tolerance. This measurement will help to ensure that the piston height will be correct for the rod-and-piston combination used. 7 Blocks, like heads, are magnafluxed to check for the tiniest of cracks. Main caps are also checked for cracks. If cracks are found, they are often in the lifter valley, main saddles, or even on the outside of the block. Cylinder heads can crack between valves.