Small Block Ford Bellhousing/Block Bolt Pattern Blueprint - Dimensions in Inches

This document is a CAD-style dimensional blueprint titled "View Looking Forward," showing the bolt hole, dowel pin, and bore locations on the face of an engine block or bellhousing pattern. All positions are dimensioned in inches relative to two reference lines: the cam bore centerline (vertical) and the crankshaft bore centerline (horizontal). The drawing locates two dowel pins, multiple bolt holes, the cam bore, the crankshaft bore, and a large 4.1000" diameter circle (likely a starter or accessory opening) positioned 7.0748" to the right of the vertical centerline and 2.5130" below the crankshaft centerline. Key dimensions include top bolt holes 3.8500" either side of centerline and 9.9600" above the crank centerline; dowel pins at 6.7600" right and roughly 7.4400"/7.9900" left of centerline at heights of 4.1100", 5.2500", and 2.8000"; and lower holes at 8.4500" left and 8.4700" right of centerline. Additional dimensions include 8.7181", 0.8400", 0.3607", 0.4400", 5.1262", and 6.4696". A reader can use this drawing to fabricate an adapter plate, verify bolt pattern compatibility, or locate dowel pins on a matching engine block face. Uploaded to a 1990 Ford Mustang gallery alongside small block Ford block pattern drawings.