JEGS 555-514078 Vortec Cast Iron Cylinder Head Features:

• OE-Style Cast Iron
• Fits all 1955-2002 Chevy small blocks except LT1, LT4, and LS-style engines
• Utilizes fast-burn combustion chambers and high-velocity intake and exhaust ports
• Performs great right out of the box and can be mildly ported and milled up to 0.040 inch
• Requires a Vortec-style intake manifold & gaskets to complete installation
• Specifications: 1.840 in. intake Valve, 1.500 in. exhaust valve, 170cc intake ports, .475 in. max lift, straight spark plug design, 3/8 in. rocker arm studs, 58cc combustion chambers, 1.250 in. O.D. valve springs
• Hardened Exhaust seats
• 3-angle valve finish
• CNC-machined guides and seats
• Assembled in USA

JEGS 555-514078 Vortec Cast Iron Cylinder Head Notes:

 This Cast Iron Vortec Cylinder Head for Small Block Chevy with 170cc Intake Runners is a bolt-on replacement for the 1996-2002 Chevy 305 5.0L Engine. 

Replaces GM OE Part Numbers 12552520, 12557113, 12558059

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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