10185071 - Hydraulic Roller Camshaft -GM ZZ4 Crate Engine

This hydraulic roller tappet is used on the 350 ZZ3 & ZZ4 engines.

The duration at lash point in degrees (intake/exhaust) is 275/280

Duration at .050" tappet lift (intake/exhaust) is 208/221

Maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 474/510.

Valve lash is zero/zero and lobe centerline is 112 degrees.

Lifters not included.

Use with Timing chain kit- 12371043

Pushrod Kit- 12371041

Lifter Kit- 12371042

Valve Spring Kit- 12495494

Retainer Kit-12495492