Head 3227 (66mm)

When you’re building a performance-oriented engine, the cylinder head is where the magic happens. The Head 3227 (66mm) is a premium, high-spec component designed to be the crowning glory of your 66mm bore setup. Engineered to optimize airflow and withstand the higher thermal loads of a modified engine, this head ensures that your machine breathes deeper and hits harder.

Why the Head 3227 is the Ultimate Performance Upgrade:
Optimized Combustion Chamber: Specifically designed for a 66mm bore, the 3227 features a revised combustion chamber shape that maximizes "tumble" and "swirl," leading to a more efficient burn and instant throttle response.

Superior Heat Management: Cast from high-grade aluminum alloy with enhanced finning (or cooling jackets), this head dissipates heat rapidly—essential for maintaining peak power during high-speed highway hauls or track days.

Precision-Machined Valve Seats: Every 3227 head comes with factory-perfect valve seats, ensuring a zero-leak seal and consistent compression from the very first start.

High-Flow Porting Ready: The intake and exhaust ports are cast with extra material thickness, allowing tuners the room to perform custom porting and polishing for even greater volumetric efficiency.

Built for Endurance: Designed to handle the aggressive lift of performance camshafts and the increased pressure of heavy-duty valve springs without warping or fatigue.

Specifications at a Glance:
Model Code: 3227 (Product SKU: RSP14735)

Bore Compatibility: 66mm (Ideal for 66mm Piston Kits)

Material: High-Strength Lightweight Alloy

Application: Performance rebuilds and Big Bore conversions.