Pacemaker | Tuned Competition Headers | Holden HQ-WB 253-308 V8 | PH 5225 L/R

Pacemaker Tuned Competition Headers - Holden HQ-HJ-HX-HZ-WB 253-308 V8 - PH 5225 L/R

Maximize the power output of your classic Holden V8 with these Pacemaker Tuned Competition headers. Designed for the HQ through WB series fitted with 253 and 308 V8 engines, these headers feature a "Tuned" length design. This configuration is engineered to provide superior exhaust gas scavenging, resulting in significant horsepower and torque gains across the mid-to-high RPM range—perfect for street machining and competitive use.

Features:

This product offers the following high-performance features:

• Tuned Design: Specifically calculated primary pipe lengths to optimize engine breathing and peak performance.
• High-Flow Primaries: Large 1¾" (44mm) primary pipes leading into a 3" (76mm) outlet for maximum exhaust flow.
• Mandrel Bent: Precision mandrel-bent tubing ensures consistent diameter throughout the bend for unrestricted flow.
• Transmission Versatility: Compatible with various performance gearboxes including Turbo 400 and Ford Toploader (with Hatfield bell housing).

Important Notes:

• Transmission Fitment: Will fit Turbo 400 and Ford Toploader gearbox (with Hatfield bell housing).
• Clutch Compatibility: Will fit with HZ type cable clutch and Hydraulic Clutch conversions. Will NOT fit HQ type mechanical clutch.
• Exclusions: Will NOT fit column change automatic or manual vehicles. Will NOT fit Powerglide Auto.
• Air Conditioning: This part is not compatible with Air Conditioning systems.

Important Information

• The image shown may not reflect the actual product
• Shipping times may vary depending on destination and stock availability

Vehicle Applications:

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