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Description
Pacemaker | Tuned Competition Headers | Holden HQ-WB 253-308 V8 | PH 5225 L/RPacemaker Tuned Competition Headers Holden HQ HJ HX HZ WB 253 308 V8 PH 5225 L R Maximize the power output of your classic Holden V8 with these Pacemaker Tuned Competition headers. Designed for the HQ through WB series fitted with 253 and 308 V8 engines, these headers feature a "Tuned" length design. This configuration is engineered to provide superior exhaust gas scavenging, resulting in significant horsepower and torque gains across the mid to high
Pacemaker Tuned Competition Headers - Holden HQ-HJ-HX-HZ-WB 253-308 V8 - PH 5225 L/R
Maximize the power output of your classic Holden V8 with these Pacemaker Tuned Competition headers. Designed for the HQ through WB series fitted with 253 and 308 V8 engines, these headers feature a "Tuned" length design. This configuration is engineered to provide superior exhaust gas scavenging, resulting in significant horsepower and torque gains across the mid-to-high RPM range—perfect for street machining and competitive use.
Features:
This product offers the following high-performance features:
- Tuned Design: Specifically calculated primary pipe lengths to optimize engine breathing and peak performance.
- High-Flow Primaries: Large 1¾" (44mm) primary pipes leading into a 3" (76mm) outlet for maximum exhaust flow.
- Mandrel Bent: Precision mandrel-bent tubing ensures consistent diameter throughout the bend for unrestricted flow.
- Transmission Versatility: Compatible with various performance gearboxes including Turbo 400 and Ford Toploader (with Hatfield bell housing).
Product Specifications for PH 5225
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5225 | Gasket | DSF 9A |
| P/Steering | Yes | Primary Pipe | 1¾" (44mm) |
| Air Con | No | Secondary Pipe | - |
| Oxy Sen | N/A | Outlet | 3" (76mm) |
| E.G.R | N/A | Fitting Time | 2½ Hrs |
| Design | Tuned | Y Branch | N/A |
Important Notes:
- Transmission Fitment: Will fit Turbo 400 and Ford Toploader gearbox (with Hatfield bell housing).
- Clutch Compatibility: Will fit with HZ type cable clutch and Hydraulic Clutch conversions. Will NOT fit HQ type mechanical clutch.
- Exclusions: Will NOT fit column change automatic or manual vehicles. Will NOT fit Powerglide Auto.
- Air Conditioning: This part is not compatible with Air Conditioning systems.
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 5225 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Kingswood / Monaro / Belmont | 1971 | 1980 | Sedan / Coupe / Wagon / Ute | HQ, HJ, HX, HZ | 253, 308 V8 | Floor Shift Man & Auto | RWD |
| Holden | Statesman / One Tonner | 1980 | 1985 | LWB Sedan / Cab-Chassis | WB | 253, 308 V8 | Floor Shift Man & Auto | 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 2452 reviews
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Product Reviews
★★★★★ 2
Fun but not for rough play.
Color: Orange
The ball contented our “golden” Jaxson for about 15 minutes. He then thought it was a regular ball and it’s just a little delicate for a big dog. I just wrote it off as a loss. Great idea but should be more durable.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Long lasting charge!
Color: Orange
My 50 pound goldendoodle absolutely loves this ball. It keeps a charge for a long time. It turns off
When it’s not being used and we play with it every day.!
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Reviewed in the United States on March 24, 2026
★★★★★ 5
dog ball
Color: Blue
This ball is perfect for keeping my dog active and entertained. It's made of strong, durable material, ideal for games of fetch. It doesn't break easily and is light enough for him to carry in his mouth without any problem.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Great toy. Definitely worth it.
Pattern Name: Classic Squeaky Tug, Pattern Name: Classic Squeaky Tug
This is a great toy. I bought this for my dachshund, and it's still going strong after 2.5 years. The string part came off after a few months, but that's fine. This is always her go-to toy.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Perfect so far!
Pattern Name: Classic Squeaky Tug
My dog has a habit of tearing up toys in just a few minutes, so far, this toy has lasted a few days, the rope is already showing signs of wear.
I wish there was a way to attach a new rope when this one goes...
She is a mid-sized dog with a LOT of energy, and she's very destructive, digging, chewing on things she's not supposed to, etc.
This helps with that, she can play with it for a long time, we don't have to always 'check' to see if she is tearing something up.
She loves grabbing it by the rope and swinging it around the sides of her head, it doesn't hurt her, and she LOVES this toy. Out of ALL of the toys that we have bought her, and that she loved, THIS ONE has been top dog to her. We love watching her play with it, it also wears her out and she'll then take a nap, which is always good.
Oh yeah, the size if PERFECT for a mid-sized to a large dog, I'm not sure about any smaller dogs. She can squeak the squeaker on it fine too, but not at first, she had to 'find out' how to do it on her own.
As far as chewing it into little pieces like one person has said, I can't attest to that, and I hope that is not the case.
I will return if she does end up chewing it into pieces, because she in known far and wide for that! :)
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Reviewed in the United States on December 2, 2023