Advance Headers | Mild Steel Engine Swap Extractors | Holden FX-HG Torana LC-UC Blue/Black 6-Cyl | A85B
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Advance Headers | Mild Steel Engine Swap Extractors | Holden FX-HG ...
Description
Description
Advance Headers High-Performance Mild Steel Exhaust Extractors for Holden FX to HG & Torana LC to UC Blue & Black Engine Conversions
The Advance Headers Conversion Exhaust Extractors (A85B) are heavy-duty, multi-fit tubular manifolds custom-engineered for classic Australian Holden passenger cars and Torana platforms undergoing a modern inline 6-cylinder powerplant upgrade. Purpose-built to clear the structural complexities of early early-model chassis setups when retrofitting the later-generation, high-flowing 12-port Holden "Blue" and "Black" motor families, this premium manifold is manufactured from heavy-gauge mild steel to ensure exceptional thermal performance. By removing the restrictive factory cast log manifold architecture, this mandrel-bent assembly drastically drops engine backpressure, smoothing exhaust scavenging lines to maximize low-to-mid range torque and deliver a crisp, iconic street exhaust note.
PRODUCT CONTENTS:
- 1 x Heavy-Duty Mild Steel 6-Cylinder Performance 12-Port Conversion Extractor Assembly
Key Features:
- Engineered with a highly adaptive multi-fit packaging matrix to drop into narrow early engine bays (FX through HG) and compact Torana platforms (LC through UC) cleanly
- Specifically clearance-mapped to seal onto late-run 12-port head configurations without interfering with steering column paths or subframe rails
- Tuned mandrel-bent primary piping pathways ensure completely uniform internal flow geometry, optimizing gas velocity and removing restrictive factory log traps
- Heavy-duty mild steel construction structurally built to handle intense under-bonnet thermal expansion cycles and typical high-torque inline-6 vibrations safely
- Thick, precision laser-cut cylinder head flanges maintain a flat, ultra-stable mating footprint to permanently guard against face distortion, thermal warping, and gas leaks
- Engineered for an exceptionally fast workshop turnaround, featuring an estimated baseline installation window of just 1.5 hours
Specifications:
- Brand: Advance Headers
- Part Number: A85B
- Material: Mild Steel (Standard Finish)
- Engine Suitability: Holden 12-Port Inline 6-Cylinder Blue & Black Petrol Engines Only (2.8L / 3.3L / 4.2L / 5.0L Swaps onto early bodies)
- Cylinder Head Configuration: Fits 12-Port Head Patterns Only
- Component Type: Engine Swap Performance Exhaust Extractors / Headers
- Estimated Fitting Time: 1.5 Hours
- Welding Required: No (Direct Bolt-On Configuration to Cylinder Head Face)
⚠️ Crucial Cylinder Head Architecture & Engine Variant Alignment Warnings:
1. Strictly 12-Port Blue & Black Blocks Only: This product (Part No. A85B) is designed and flange-mapped exclusively for the 12-port layout native to Holden Blue and Black motor families. Because the exhaust port configurations, bolt index points, and manifold configurations are completely distinct, these headers will NOT fit standard early 9-port Red motors.
2. Engine Swap Tolerances: Formed to navigate past steering components and crossmembers across multiple early chassis generations. However, due to the variance in aftermarket engine swap conversion mounts, careful alignment with local steering shaft links should be double-checked before fixing the collector setup down.
Please Note: Due to the custom nature of retrofitting later 12-port engines into early vintage bodies, professional installation by an experienced classic car specialist or exhaust restoration workshop is highly recommended.
Important Information
- The image shown may not reflect the actual product design.
- Ensure your vehicle details match the application guide below before purchasing.
Vehicle Conversion Applications for A85B Performance Engine Swaps
| Make | Model Range | Chassis Compatibility Range | Body Type | Chassis Series | Engine Conversion Details | Fitting Time | Conversion & Fitment Notes |
|---|---|---|---|---|---|---|---|
| Holden | Early Passenger / Kingswood / Monaro | 1948 – 1971 (Chassis Profiles) | 4-Door Sedan / 5-Door Station Wagon / Utility (Ute) / Panel Van / Coupe | FX / FJ / FE / FC / FB / EK / EJ / EH / HD / HR / HK / HT / HG Series | Holden 12-Port Blue or Black Inline 6-Cylinder Retrofit Swaps | 1.5 Hours | RWD | Mandrel-bent upgrade conversion routing mapped to snake past vintage steering boxes and original chassis firewalls cleanly. Designed for 12-port heads only. Fits auto and manual models. |
| Holden | Torana / Sunbird | 1969 – 1980 (Chassis Profiles) | 2-Door Coupe / 4-Door Sedan / 3-Door Hatchback | LC / LJ / TA / LH / LX / UC Series Only | Holden 12-Port Blue or Black Inline 6-Cylinder Retrofit Swaps | 1.5 Hours | RWD | Clearance-profiled primary pipes dodge tight Torana rack and pinion paths and engine bay crossmembers efficiently. Excludes early 9-port Red motors. |
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