Yella Terra Holden V8 253/308 Dash-3 Hi-Port Bare Alloy Cylinder Heads — Pair — ABH 308-3

ABH 308-3 is Yella Terra’s bare Dash-3 Hi-Port alloy cylinder-head pair for early carburetted Holden 253/308-style V8 builds. The raised intake-port architecture is intended to improve available port area and airflow compared with the original iron-head arrangement.

Dash-3 bare pair

• Pair of semi-finished alloy cylinder heads.
• Raised intake-port position; Yella Terra states up to approximately 40% greater port area than standard.
• Designed around early pre-injection Holden V8 architecture.
• Provision for 7/16 UNC screw-in studs or compatible shaft-rocker systems.
• Intake manifold position must match the raised-port head arrangement; manifold-spacer/repositioning requirements must be checked for the exact intake.

Bare / semi-finished component: Final seats, guides, chamber volume, surfacing and valvetrain geometry require engine-builder completion and verification.

Supplier

Yella Terra

Product System

• Engine Parts

Supplier Part Number

ABH 308-3

Built by Boost & Tune Support

BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.