Lifter / Lash Adjuster, Valve

Engines may be encountered with oversize tappets (all eight) and/or an oversized camshaft. Oversize tappets will be identified by a stamping .254 OT'' on the machined pad below the rocker arm rail and above the No.1 exhaust port. Oversize camshaft will be identified by a stamping .38O/C'' on the cover rail above the No. 4 exhaust port and by stamping .38 O/S'' on the distributor drive end of the camshaft.

Lifter Bore Diameter	.8754-.8766 Inch (in)
Lifter Diameter	0.874 Inch (in)
Lifter To Bore Clearance	.009-.0026 Inch (in) Note: Maximum, .005 inch.