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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Pacemaker | Small Block Chev V8 283-400 | Holden HQ-WB 1 3/4" Tri-Y | PH5320 L/RPacemaker Chevrolet 283 400 Small Block V8 Holden HQ WB PH5320 L R Engineered for performance and durability, these Pacemaker Tri Y headers are designed to suit Holden HQ through WB models fitted with Small Block Chevrolet V8 engines ranging from 283 to 400 cubic inches. These headers provide excellent ground clearance and optimized exhaust scavenging for both street and strip applications. Note: Spacers must be fitted on the correct side; RH spacer
Pacemaker Chevrolet 283-400 Small Block V8 - Holden HQ-WB - PH5320 L/R
Engineered for performance and durability, these Pacemaker Tri-Y headers are designed to suit Holden HQ through WB models fitted with Small Block Chevrolet V8 engines ranging from 283 to 400 cubic inches. These headers provide excellent ground clearance and optimized exhaust scavenging for both street and strip applications. Note: Spacers must be fitted on the correct side; RH spacer is 1¾” high, LH spacer is 1¼” high.
Features:
This product offers the following high-performance features:
- Tri-Y Design: Specifically tuned to enhance mid-range torque and overall engine breathability.
- Transmission Compatibility: Precision fitment for Turbo 400 and Powerglide automatic transmissions.
- Heavy Duty Construction: Built to withstand the heat and vibration of high-displacement SBC V8 motors.
Product Specifications for PH5320 L/R
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5320 | Gasket | DSF 9 |
| P/Steering | Yes | Primary Pipe | 1¾" (44mm) |
| Air Con | Yes | Secondary Pipe | 2" (51mm) |
| Oxy Sen | N/A | Outlet | 2¼" (57mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 2 Hrs | Design | Tri-Y |
Important Notes:
- Will fit Turbo 400 and Powerglide automatic transmissions.
- Will not fit slant plug heads or raised port heads.
- Will only fit with original engine mounting spacers or PACEMAKER spacers (Part # Pemp 350).
- RH spacer must be 1¾” high; LH spacer must be 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:
Vehicle Applications for PH5320 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| HOLDEN | Kingswood / Belmont / Statesman / Monaro | 1971 | 1984 | Sedan / Ute / Wagon / Van / Coupe | HQ-HJ-HX-HZ-WB | Small Block Chev (283-400) | 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
4.9 ★★★★★
Based on 148 reviews
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Product Reviews
★★★★★ 5
Rustic Wall Shelves That Just Work
Size: 17inch, Color: Black
I bought these six floating shelves to add some storage and a cohesive look to a few walls around the house. The set has a rustic real wood vibe with an industrial edge, and the black finish keeps things feeling clean and understated. It turned out to be a practical way to create space without committing to a bulky cabinet, and I appreciated having multiple pieces to arrange in different rooms.
Installation was straightforward. The package includes 12 brackets, wall anchors and screws, plus clear directions, so I could get them up without much hassle. It takes about eight minutes to mount each shelf, and the hardware feels solid. The shelves can hold around 20 pounds each, which is plenty for everyday items like books, a plant, an alarm clock, or framed photos.
In use, the look is exactly what I wanted: sturdy, simple, and able to blend with existing decor across the bedroom, bathroom, kitchen, and living room. The real wood surface and the exposed metal brackets give a cohesive, rustic vibe that elevates plain walls and makes it easy to rotate items in and out.
One small note is that the boards are 17 inches long and about an inch thick, so planning spacing and wall space matters a bit. The brackets being visible is part of the look, not a flaw, but it means accurate mounting is important. Overall I am very pleased with the set and it earns a solid five stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2026
★★★★★ 5
Great shelves
Size: 17inch, Color: Light Walnut, Size: 17inch, Color: Light Walnut
I love how these look in the nook in my bathroom. I needed 6 inch shelves and this was way easier than ripping 8 inch from the hardware store
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
★★★★★ 5
Great
Size: 36inch, Color: Light Walnut, Size: 36inch, Color: Light Walnut
Got the job done very light weight but durable great condition installation was super easy
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Reviewed in the United States on April 29, 2026
★★★★★ 4
Not a bad buy
Size: 36inch, Color: Light Walnut, Size: 36inch, Color: Light Walnut
Very Light weight, they look great though. Fairly easy to put together. Came with all parts I’ll be it scattered and the screws don’t look sturdy but I won’t be using the ones that it came with. Overall, fair price, quality is fair as well.
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Reviewed in the United States on January 16, 2026
★★★★★ 5
Love these shelves!
Size: 48inch, Color: Light Walnut
These are incredible for the price! Feel & look like wood. Easy-ish to install - just take your time, measure twice & use a level. Very sturdy! Great hardware & instructions. Now my daughter wants some for her apt.
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Reviewed in the United States on February 22, 2025