Pacemaker Headers PH2500 – Chrysler Valiant Slant Six (AP5, AP6, VC, VE, VF)

Pacemaker Headers PH2500 (extractors) are a great performance upgrade for Chrysler Valiant Slant Six engines in the AP5, AP6, VC, VE and VF range. Featuring a tuned-length design with mandrel-bent tubing, these headers are made to improve exhaust flow, throttle response, and mid-range torque while maintaining excellent drivability for classic street cars and restorations.

Key Features

• Mandrel-bent 38mm primary pipes, 51mm secondary pipes, and 57mm outlets
• Tuned-length header design to optimise scavenging and torque delivery
• Thick machined flanges for dependable sealing and durability
• Pacemaker Blue heat-resistant coating rated to 800°C

Construction

• High-quality mild steel tubing, precision welded for strength and accuracy
• Australian made for consistent fitment and long service life

Additional Options

• Ceramic Coating: See product code "PHC40"

Fitment Notes

• Suits Chrysler Valiant Slant Six engine configurations
• Clearances may vary with non-original mounts, steering components, or modified engine bays
• Check starter motor and surrounding component clearance during installation

What’s Included

• Pacemaker Headers SKU: PH2500

Recommended With

• Gasket: See product code "DSF005"
• Exhaust Mounts: See product code "UNB002" / "RT1"
• Matching exhaust system or intermediate pipes may be available – contact us

Why Good Headers & Exhaust Systems Matter

• A 225ci Slant Six engine draws in approximately 7,840 litres of air per minute and expels around 23,520 litres of exhaust gas per minute at 5,000 rpm [@600°C], showing why efficient header design plays such an important role in engine performance.

Warranty & Compliance

• Backed by Pacemaker’s 2-year manufacturer warranty
• No emissions compliance note required for these pre-1986 applications

Frequently Asked Questions

Will these headers fit all Chrysler Valiant Slant Six models listed?
These headers are designed to suit the AP5, AP6, VC, VE and VF Chrysler Valiant Slant Six applications listed above. If your vehicle has been modified, please confirm fitment before ordering.

Are gaskets included?
Please check the listing details and Recommended With section. For this application, the recommended gasket is product code DSF005.

Are these tuned-length headers?
Yes. Pacemaker PH2500 headers use a tuned-length design to help improve exhaust scavenging, mid-range torque, and throttle response.

Can these headers be ceramic coated?
Yes. Ceramic coating is available separately under product code PHC40.

Customer Support

For phone orders, advice, or part enquiries – contact us: