Pacemaker | 1 3/4" 4-into-1 Competition Headers | Holden HQ–WB Small Block Chev 283–400 V8 | PH5325 L/R
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Warranty Included: This premium product is backed by a manufacturer’s warranty for your peace of mind.
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Pacemaker | 1 3/4" 4-into-1 Competition Headers | Holden HQ–WB...
Description
Description
Pacemaker 1 3/4" 4-into-1 Competition Headers - Holden HQ-WB Small Block Chevrolet V8 - PH5325 L/R
Unleash true competition-grade performance from your small block chevrolet engine swap with these premium Pacemaker Tuned 4-into-1 headers. Specifically engineered for Holden HQ through WB models converting to Small Block Chevrolet V8 power (283, 302, 305, 307, 327, 350, 400), these headers offer maximized exhaust scavenging and high-RPM power transmission. Note: Designed specifically for standard deck blocks; will not clear column automatic or Powerglide automatic transmissions.
Features:
This product offers the following high-performance features:
- Tuned 4-into-1 Design: Engineered with mathematically matched 1¾" (44mm) primary pipes leading to a high-flowing 3" (76mm) collector path to deliver maximum top-end horsepower and throttle response.
- Slant Plug Compatibility: Cleverly routed architecture ensures complete clearance with both standard straight and performance slant-plug cylinder heads.
- Mandrel-Bent Tubing: Formed using precise CNC mandrel bending techniques to ensure uniform pipe diameter lines and completely eradicate restrictive exhaust choke points.
- Heavy-Duty Structural Flanges: Precision laser-cut mounting plates provide an absolute flush sealing face to eliminate standard warpage risks under extreme heat configurations.
- Power Steering Clearance: Engineered layout preserves absolute clearance and operating safety with original factory power steering boxes.
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5325 | Gasket | DSF 9 |
| P/Steering | Yes | Primary Pipe | 1¾" (44mm) |
| Air Con | No | Secondary Pipe | - |
| Oxy Sen | N/A | Outlet | 3" (76mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 2 Hrs | Design | 4 into 1 Tuned |
Important Notes:
- Will clear aftermarket slant-plug cylinder heads.
- Will NOT fit models running a column automatic setup or Powerglide automatic transmissions. Fits Turbo 400 automatic transmissions smoothly.
- Will NOT clear premium performance raised port aftermarket cylinder heads.
- Will only mount properly with standard factory original engine mounting spacers or specialized PACEMAKER spacers (Part Number: Pemp 350). Note: Spacers must be located on the correct sides of the engine bay configuration (Right Hand spacer stands 1¾” high, Left Hand spacer stands 1¼” high).
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Kingswood / Monaro / Ute | 1971 | 1984 | Sedan / Wagon / Ute / Van / One Tonner | HQ-WB | Small Block Chev V8 (283-400) | Engine Conversion | RWD |
| Product | Warranty Period |
|---|---|
| Pacemaker Headers | Two (2) years. |
| Pacemaker King Brown 4x4 Exhaust systems | Five (5) years. |
| Pacemaker Sports exhaust systems | Five (5) years. |
| Fabrication products and accessories | One (1) year. |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
