Pacemaker PH2540 Headers – Chrysler Valiant 340-360 V8 (VE, VF, VG, VH, VJ, VK, CL, CM)

Pacemaker PH2540 headers (extractors) are designed to suit Chrysler Valiant VE, VF, VG, VH, VJ, VK, CL and CM models fitted with 340 or 360 Mopar small-block V8 engines using J-Heads. These precision-engineered headers improve exhaust flow, increase torque, sharpen throttle response and deliver a stronger exhaust note. A great choice for Mopar small-block street builds, restorations and classic Chrysler Valiant V8 performance upgrades.

Key Features

• Mandrel-bent 42mm primary pipes, 45mm secondary pipes, and 63mm flanged outlets
• Thick machined flanges for durability and leak-free sealing
• Smooth merge collectors for improved exhaust scavenging and power delivery
• Pacemaker Blue heat-resistant coating rated to 800°C

Construction

• High-quality mild steel tubing for strength and durability
• Precision welded construction for consistent fitment
• Australian manufactured Pacemaker performance design

Additional Options

• Ceramic Coating: Available under product code PHC10
• Gasket: Recommended gasket DSF148

Fitment Notes

• J Heads are identified by a "J" stamped on pads above the spark plugs
• Automatic column-shift linkages may require modification
• Designed for automatic transmission vehicles only
• Will not fit CL models after engine number A221401167
• Protect painted surfaces and wrap headers during trial fitting
• Clearance may vary depending on engine mounts, steering or aftermarket components
• These headers are not pipe-over-cone design

What’s Included

• Pacemaker PH2540L left header assembly
• Pacemaker PH2540R right header assembly
• Header bolts [12]
• Tapered outlet cones with gaskets for exhaust connection

Recommended With

• Exhaust gasket set DSF148
• Matching intermediate pipes or exhaust system components may be available – contact us

Why Good Headers & Exhaust Systems Matter

• A Chrysler 360 V8 engine draws in approximately 12,500 litres of air per minute and expels around 37,500 litres of exhaust gas per minute at 5,000 rpm [@600°C]. Efficient header design allows this exhaust volume to exit the engine smoothly, improving overall engine performance.

Warranty & Compliance

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

Frequently Asked Questions

What vehicles do these headers suit?
Pacemaker PH2540 headers suit Chrysler Valiant VE, VF, VG, VH, VJ, VK, CL and CM models fitted with 340 or 360 Mopar small-block V8 engines.

How do I identify J Heads?
J Heads have the letter “J” stamped on raised pads above the spark plug holes.

Do these headers fit manual transmission vehicles?
No. Pacemaker PH2540 headers are designed for automatic transmission vehicles only.

Will column-shift automatic vehicles require modification?
Yes. Vehicles fitted with column-shift automatic linkages may require modification to ensure proper clearance.

Are gaskets included?
Header gaskets are not included. The recommended gasket for this application is DSF148.

Can these headers be ceramic coated?
Yes. Ceramic coating is available separately under product code PHC10.

Customer Support

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