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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
4.5 ★★★★★
Based on 223 reviews
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Product Reviews
★★★★★ 1
Bought a "Used like new" watch. Doesn't keep time
Color: Black/Black/Black/Fast-Wrap
I've had this for a few weeks. Since then, it's lost about 30 seconds. I'm not sure if it's this specific unit that has the issue or the mechanism itself. It's a shame because it's a killer looking watch.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Another Great Timex !
Color: Brown/Brown/Natural, Color: Brown/Brown/Natural
Great beater watch. Lime on hands glows for 15 mins. Indigo is brite. Legibility is great. Fits small wrist well. Great watch!
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Reviewed in the United States on April 14, 2026
★★★★★ 3
Light, retro watch
Color: Brown/Brown/Natural
This is a light, comfortable and retro-stylish watch. A mixture of plastic, canvas, and faux-leather makes a good match for a college professor's tweed jacket with leather shoulders and elbow patches. It looks and feels cheap but it's actually a pretty good watch.
Mine has a high contrast face making it easy to read. The hands have lume on them but it only glows for a few minutes. There is an indiglo feature when you press the winder so that's great. The day window is tiny and almost unreadable even with reading classes but other than that it is very functional.
You can adjust the time and day independently (so you don't have to wind through 100+ hours to get the right day displayed). The winder setting to select between time and day adjust is very finicky. Fortunately you only need to adjust the day 5 times a year.
The weakest part is the build quality. I'm not expecting Rolex, but the case corrodes really badly and the strap is short and the stitching failed so it fell off my wrist in about 6 months. I replaced the strap with a better one but the case corroded so badly I tossed it within a year.
Other than looking cheap, poor build quality, and being thicker than I would like, I think this is a good watch.
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Reviewed in the United States on June 17, 2025
★★★★★ 5
A nice, comfortable watch.
Color: Black/ Green
A nice inexpensive everyday watch. It is accurate, a nice size for my wrists. You barely feel it as it is so light. it has a nice clear face Andy only gripe is that I wished it had slightly better loom. Other than that it is a great watch for the money and this is coming from someone with 30+ watches in my collection in all price ranges. It has earned its way into my regular watch rotation.
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Reviewed in the United States on August 14, 2025
★★★★★ 4
Good Watch for use in water.
Color: Black/ Green
Here's the deal. It's an excellent plastic watch. If you don't abuse it, it should last years. The advantage of metal bodies and crystal faces, is that they're lot more resistant to scratches compared to plastic, BUT they weigh a lot more than plastic watches. I love the size of this watch while at the same time, it surprisingly light on the wrist. Therefore it doesn't move all around like a heavy steel watch. I hardly know Im wearing this plastic watch. Also, I went snorkling offshore for a week with this watch, no leaks, no problems. It will stand up to water fine. So, if you don't abuse it, its a pleasure to wear, lightweight, waterproof, doesnt slip around, looks good. I imagine the battery should last 3-5 yrs like my last plastic quartz watch. For the price, its a very good watch.
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Reviewed in the United States on April 11, 2025
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