Enginetech ES668 Stage S Hydraulic Flat Tappet Camshaft Ford 4.2L 255 5.0L 302

The Enginetech ES668 is a Stage S hydraulic flat tappet replacement camshaft designed for Ford small-block engines, including the 4.2L (255 CID) and 5.0L (302 CID) V8 applications spanning the 1972–1991 model years. Enginetech manufactures this camshaft to OEM-equivalent specifications, making it an ideal stock replacement for engines requiring a camshaft refresh during a rebuild or overhaul.

Key Features:

• Hydraulic flat tappet design — compatible with standard hydraulic lifters; no special valve train components required
• Cam lift: 0.237 in.
• Intake lobe centerline: 103°
• Exhaust lobe centerline: 111°
• Overlap: 50°
• Valve lash (intake): Hydraulic (zero lash)
• Valve lash (exhaust): Hydraulic (zero lash)
• Compatible with Ford 4.2L 255 CID and 5.0L 302 CID small-block V8 engines
• Direct-fit OEM-style replacement — no modifications required
• Engineered for stock rebuild and engine restoration applications

The ES668 is a direct OEM-replacement camshaft intended for stock engine rebuilds. It is designed to restore proper valve timing and engine performance to factory specifications. Use with flat tappet (flat follower) hydraulic lifters. Also available as part of the Enginetech ECK668 camshaft and lifter kit.