Advance Headers | Mild Steel Exhaust Extractors | Holden Torana LH LX Kingswood HT HG 253 308 V8 | A413
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Advance Headers | Mild Steel Exhaust Extractors | Holden Torana LH ...
Description
Description
Advance Headers High-Performance Mild Steel Exhaust Extractors for HOLDEN Torana LH-LX & Kingswood HT-HG 253 & 308 V8 Engines
The Advance Headers Performance Exhaust Extractors (A413) are precision-engineered for classic Australian Holden platforms running the legendary 4.2-Litre 253 and 5.0-Litre 308 iron-block V8 engines. Specially mapped to service both mid-sized muscle cars like the Torana LH-LX series and full-sized HT-HG Kingswood/Premier models, this heavy-duty tubular header upgrade eliminates the intense backpressure limitations of stock factory cast-iron log manifolds to unleash that iconic crisp, deep Aussie V8 rumbling note and maximize power routing.
PRODUCT CONTENTS:
- 1 x Heavy-Duty Mild Steel Performance Exhaust Extractor Header Set (Left & Right Bank Assembly)
Key Features:
- Tuned mandrel-bent primary piping pathways maintain uniform internal diameters, optimizing cylinder gas scavenging velocity and throttle response profiles across the rev range
- Substantially optimizes low-to-mid range torque acceleration—giving classic street cruisers, muscle restorations, and weekend drag cars a noticeable performance boost
- Heavy-duty mild steel construction structurally built to handle severe classic car engine bay thermal expansions and demanding high-performance heat cycles safely
- Thick, precision laser-cut cylinder head flanges maintain flush mating boundaries to guard permanently against face warping and high-pressure exhaust gas leaks
- Engineered with versatile cross-platform routing paths to step around tight classic steering boxes, subframe mounts, and underbody structural points cleanly
Specifications:
- Brand: Advance Headers
- Part Number: A413
- Material: Mild Steel (Standard Finish)
- Engine Suitability: Holden 253ci (4.2L) & 308ci (5.0L) Pushrod V8 Carburettor Engines Only
- Component Type: Performance Exhaust Extractors / Headers
- Estimated Fitting Time: 2.5 Hours
- Welding/Modification Required: No on standard floors/Torana (HT-HG models with column-shift automatic linkages require custom rod modification)
⚠️ Crucial Transmission & Linkage Fitment Compatibility Warnings:
1. Powerglide Transmission Exclusion: This extractor set (Part No. A413) will NOT fit vehicles equipped with a 2-speed GM Powerglide automatic transmission due to interference issues with the wide transmission case housing contours.
2. Torana Drivetrain Clearances: This kit is fully clearanced and configured to clear popular GM Turbo 350 (TH350) and Turbo 400 (TH400) automatic transmission conversions when fitted into LH and LX series Torana engine bays layout paths smoothly.
3. HT-HG Linkage Modification Note: If installing this product onto an HT or HG series Holden running a column-shift automatic transmission, the mechanical selector shift linkages must be modified/bent customly to clear the trailing primary tubes near the firewall block area.
Please Note: Professional installation by an exhaust specialist or qualified classic muscle automotive mechanic is highly recommended to guarantee proper system mapping and a perfect leak-free seal.
Important Information
- The image shown may not reflect the actual product design.
- Ensure your vehicle details match the application guide below before purchasing.
Vehicle Applications for A413 Performance Holden V8 Extractors
| Make | Model | Year Range Spec | Body Type | Chassis Series | Engine Details | Fitting Time | Drivetrain / Fitment Notes |
|---|---|---|---|---|---|---|---|
| Holden / G.M.H. | Torana (S / SL / SLR / SS) | 1974 – 1978 | 4-Door Sedan / 3-Door Hatchback | LH / LX Series Only | Holden 4.2L 253 & 5.0L 308 V8 Petrol | 2.5 Hours | RWD | Performance tubular design fits cleanly past steering setups. Accommodates Turbo 350 and Turbo 400 gearbox pathways perfectly. |
| Holden / G.M.H. | Kingswood / Premier / Brougham / Monaro | 1969 – 1971 | Sedan / Station Wagon / Coupe / Utility / Panel Van | HT / HG Series Only | Holden 4.2L 253 & 5.0L 308 V8 Petrol | 2.5 Hours | RWD | Unclogs restrictive factory cast manifolds. Column-shift auto linkages require minor physical alteration to clear. Strictly will NOT fit Powerglide transmissions. |
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