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Description
Pacemaker | Tri-Y Design Exhaust Headers | Holden HQ HJ HX HZ WB 304 5.0L EFI V8 | PH 5270 L/RPacemaker Tri Y Design Exhaust Headers Holden HQ WB 304 EFI V8 Conversion PH 5270 L R Specifically engineered for the classic Holden HQ WB series, these Pacemaker Tri Y exhaust headers are the perfect solution for 5. 0L EFI engine conversions. Whether you are running a complete VN VT Series 1 304 V8 or fitting EFI heads to your original 253 308 block, these headers optimize exhaust scavenging to deliver significant gains in mid range torque and
Pacemaker Tri-Y Design Exhaust Headers - Holden HQ-WB 304 EFI V8 Conversion - PH 5270 L/R
Specifically engineered for the classic Holden HQ-WB series, these Pacemaker Tri-Y exhaust headers are the perfect solution for 5.0L EFI engine conversions. Whether you are running a complete VN-VT Series 1 304 V8 or fitting EFI heads to your original 253-308 block, these headers optimize exhaust scavenging to deliver significant gains in mid-range torque and throttle response. Note: Confirmed fitment for both Manual and Automatic transmissions.
Features:
This product offers the following high-performance features:
- Tri-Y Header Design: Optimized for high-efficiency exhaust flow, providing the best balance of low-end torque and high-end power for the 5.0L EFI V8.
- Conversion Ready: Tailored specifically for HQ-WB chassis using VN, VP, VR, VS, or VT Series 1 engine components.
- Mechanical Clutch Compatible: Engineered to clear the HQ-style mechanical "Rat Trap" clutch system.
- Oxygen Sensor Ready: Integrated provisions for Oxy Sensors to support EFI engine management systems.
Product Specifications for PH 5270 L/R
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5270 | Gasket | DSF 63 |
| P/Steering | Yes | Primary Pipe | 1⅝" (41mm) |
| Air Con | Yes | Secondary Pipe | 1⅞" (48mm) |
| Oxy Sen | Yes | Outlet | 2¼" (57mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 2 Hrs | Design | Tri-Y Design |
Gearbox & Sump Compatibility:
- Gearboxes: Australian 4-speed (cable clutch), T5 (VN-VS), Toyota Supra 5-speed (Hatfield bellhousing), Trimatic, Turbo 350, Turbo 400, and Turbo 700 (with Hatfield rear cross member).
- Sumps: Will fit with High Energy Sump Part No. HE2101.
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
Vehicle Applications for PH 5270
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Monaro / Kingswood / Statesman | 1971 | 1984 | Sedan / Ute / Wagon | HQ-HJ-HX-HZ-WB | 304 5.0L EFI V8 (VN-VT S1) | Manual & Automatic | RWD |
Warranty Information
| 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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2275 reviews
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Product Reviews
★★★★★ 5
Profesionally Fit and Tailored outfit
Color: Black, Size: Large
Pretty professional and great outlook wearing it with a tie. Can be used in any environment but not in a warmth area with a Jacket. Feels pretty comfortable. Material was great indeed and pretty silky from the inside.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
pretty good for the price
Color: Brilliant Black, Size: Large
pretty darn good for the price. You can tell its cheap when you feel it and look close but its really not bad. Surprisingly it fit very well. (for reference Im 6' 1.5" 180 pounds and everything fit me good, except the pants that were a little baggy and the vest a little short) but for the price its good. Its nice enough you can wear it out and not feel like your wearing a Halloween costume or something.
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Reviewed in the United States on November 14, 2025
★★★★★ 5
Perfect for such a special occasion
Color: Brilliant Black, Size: Medium, Color: Brilliant Black, Size: Medium
I bought this suit for my son's graduation and was very satisfied. It looks elegant and modern, and the fit was excellent. The fabric is comfortable and of good quality—ideal for wearing for several hours. I received many compliments that day. Without a doubt, a very good choice for important and special events.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Feels Tailored, Perfect Fit, Fast Delivery, Zero Complaint
Color: Black, Size: Large
I honestly did not expect this level of quality ordering a suit online, especially on such short notice, but this completely exceeded my expectations.
First off, the fit is incredible. The jacket feels like it was tailored specifically for me, it wraps cleanly around the shoulders and arms without being tight, and tapers perfectly at the waist. I still have full range of motion, which is rare for a fitted jacket. The one-button design gives it a modern, sleek look that really stands out.
The pants are just as impressive. They fit perfectly, not too tight, not too loose, with a clean, straight fall that looks amazing with dress shoes. The length is spot on, and the overall structure makes it look very polished. I also appreciate the thoughtful details like secure closures, belt loops, and well-placed pockets.
The vest was the cherry on top. It fits clean and adds an extra level of sophistication to the whole outfit. Together, the full set gives a very sharp, put-together look without feeling overdone.
What really shocked me was the speed. I ordered this late at night and received it the next morning. That alone would have been impressive, but to combine that kind of delivery with this level of quality is next-level.
Overall, this suit looks, feels, and fits far better than I expected at this price point. If you're hesitant about buying a suit online, this is definitely one of those rare cases where it absolutely pays off.
Highly recommend.
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Reviewed in the United States on March 27, 2026
★★★★★ 3
One piece was true to size and the other wasn’t
Color: Brilliant Black, Size: XX-Large
Looked nice and perhaps decent quality for the price, but one piece fit while the other didn’t, like I forgot which, but either the jacket fit, but the pants were too big or small or vice versa . Had to return it.
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Reviewed in the United States on May 15, 2026