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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 1204 reviews
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Product Reviews
★★★★★ 5
Cute jeans
Size: 12, Color: Washed Blue, Size: 12, Color: Washed Blue
Bought these jeans for my daughter and they fit great! The material is thick, which is nice even in warm weather. They look just like the photo and have a great length to them. Very comfortable and stretchy . She loves them!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2025
★★★★★ 5
FANTASTIC FIT
Size: 16 Plus, Color: Washed Blue
I'm a 4'7" , 65 year old woman. Due to abdominal issues I needed jeans that give that extra something on the waist. I've tried on just about every brand of jeans ranging in size from adult/junior 6 to 12. If they fit on the legs the waist was huge. If they fit on the waist the legs and butt had enough room for me and a friend. I was resigned to wearing yoga pants and leggings with big shirts. My son mentioned that he loved the Amazon basics men's dress slacks, so I figured why not. First I looked at women's and juniors, and I knew from the measurements that I was still stuck. Then I remembered that about 15 years ago I'd buy girls pants (I was a size 12 in kids at the time) Looking at the sizes I knew a 12 was way too small, then I saw the 16 plus. With hesitation I bought them. Well glory be miss Agnes, THEY FIT. Comfortable, real jeans again. Sure, I have to take them up about 6 inches, but that's fine, not a problem. I'm just so happy to have real jeans again !!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 30, 2023
★★★★★ 5
Love them!
Size: 7 Slim, Color: Washed Blue
I did but expect these jeans to fit so well and look so nice on my daughter. Hands down the best jeans I’ve purchased for her, much better fit and quality than the other stores! The length is perfect, but it’s a little snug in the waist. Still a great fit with some stretchiness! Great value!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 25, 2025
★★★★★ 5
Great pair of Jean and great price!
Size: 14, Color: Washed Blue, Size: 14, Color: Washed Blue
I can’t believe these were only $13. They feel and look like quality jeans, very basic/simple boot cut. My daughter says they’re stretchy and comfortable. I ordered her a size 14 (12’s fit her waist but are always too short) She’s 11 years old, 5’ tall, about 80lbs. The waist adjusters were great for the perfect fit.
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Reviewed in the United States on August 9, 2025
★★★★★ 5
Love the Options
Size: 10 Slim, Color: Medium Wash
I love that there are slim and plus sizes. Allows me to find the perfect fit for my girls!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
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