Measuring the Cylinder for Oversize
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Adjust the micrometer to a dimension slightly smaller than the bore size. Refer to Engine Mechanical Specifications (LC8 VIN B) , or Engine Mechanical Specifications (L96 VIN G) .
- Insert the J-8087 gauge into the micrometer and zero the bore gauge dial.
Use the J-8087 gauge and measure the cylinder bore for oversize.
Slide the bore gauge up and down throughout the length of the cylinder bore. Measure the bore, both parallel and perpendicular to the centerline of the crankshaft, at the top, center, and bottom of the bore. A cylinder bore that exceeds the maximum diameter must be serviced with an oversized piston. Refer to Engine Mechanical Specifications (LC8 VIN B) , or Engine Mechanical Specifications (L96 VIN G) .