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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
4.2 ★★★★★
Based on 2414 reviews
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Product Reviews
★★★★★ 4
Instructions are useless
Size: 1 Panel
The instructions are poorly written and not very helpful. The divider itself is easy to assemble, and honestly, it would’ve been quicker if I had skipped the directions altogether. Once put together, though, it works as intended.
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Reviewed in the United States on February 20, 2026
★★★★★ 5
This was the best
Size: 1 Panel
This divider is great for creating a little privacy or separating a small area without taking up much space. The fabric is thick enough to block visual clutter, and the frame is lightweight but stable once it’s opened. It folds flat for storage, which is convenient if you only need it occasionally. Assembly was straightforward, and it was the perfect size. It’s a practical piece for apartments, studios, or home offices where you want a quick, temporary partition.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Good privacy screen
Size: 1 Panel, Size: 1 Panel
This is a good privacy screen that's easy to assemble and looks nice. Be a little careful moving it, as the corners can twist. It's sturdy once in place, and the thick material is completely opaque. If the folds bother you, you might want to iron it, but I'm happy with it as is.
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Reviewed in the United States on March 30, 2026
★★★★★ 3
Lightweight divider that works well for video call backgrounds
Size: 1 Panel
This divider works fine for what it is, but it’s definitely on the lightweight side.
Setup was very easy and only took a few minutes. The frame is fairly light, so it’s easy to move around or reposition if needed. That said, the tradeoff is that it’s not especially sturdy. It stands fine on its own but I wouldn’t expect it to handle much bumping or movement.
I mainly bought it to use as a background for Zoom calls when I’m working from my den, and for that purpose it works great. The fabric panel blocks the room behind me and gives a cleaner background on camera.
It’s not huge though. To keep the camera from seeing around it, I have to position it directly behind my chair. If you’re expecting it to divide a large room or create a big privacy barrier, it may feel a bit small.
Overall, it does the job and works well for temporary setups or video call backgrounds, but the lightweight frame keeps it from feeling like a premium divider.
The product description and photos are accurate.
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Reviewed in the United States on March 12, 2026
★★★★★ 2
Sent Wrong Pieces
Size: 1 Panel, Size: 1 Panel
I really, really wanted to like this - and, in theory, I really, really should have! The instructions were easy to follow and assembly took about five minutes. The assembled screen is lightweight and easy to move. It was a great size and exactly what I was looking for except....I wasn't sent the correct pieces. Instead of receiving 4 elbow pieces and 4 feet, I received 2 elbow pieces and 8 feet - meaning that the bottom part of the fabric just hangs there and, overall, the divider is extremely unstable because there is no horizontal support on the bottom. Thankfully, there are Velcro tabs on the side of the fabric so I can use it if I don't plan to move it even 1 cm, but otherwise, what I received is not usable for what I needed it for. Additionally, the fabric is made of polyester and catches animal hair very easily. Had I received the correct pieces, this would be a good buy for the money. Unfortunately, overall, I'm disappointed.
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Reviewed in the United States on February 28, 2026