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Description
Pacemaker | Competition Headers | Holden HK-HT-HG Small Block Chev V8 283-400 | PH5305 L/RPacemaker 4 into 1 Competition Headers Holden HK HT HG Small Block Chev V8 PH5305 L R Maximize the performance of your Small Block Chevrolet powered classic Holden with these Pacemaker Competition Headers. Specifically engineered for the HK, HT, and HG series, these 4 into 1 tuned headers are designed to provide superior exhaust flow for engines ranging from 283 to 400 cubic inches. Whether you are running a street machine or a track oriented build,
Pacemaker 4-into-1 Competition Headers - Holden HK-HT-HG Small Block Chev V8 - PH5305 L/R
Maximize the performance of your Small Block Chevrolet-powered classic Holden with these Pacemaker Competition Headers. Specifically engineered for the HK, HT, and HG series, these 4-into-1 tuned headers are designed to provide superior exhaust flow for engines ranging from 283 to 400 cubic inches. Whether you are running a street machine or a track-oriented build, these headers deliver the high-flow efficiency your V8 demands.
Features:
This product offers the following high-performance features:
- Tuned 4-into-1 Design: Precision-engineered primary lengths ensure optimal exhaust scavenging and maximum power output.
- Slant Plug Compatibility: Designed to clear slant plug cylinder heads, providing flexibility for various performance head setups.
- High-Flow 3" Outlet: Large 76mm outlet minimizes backpressure, allowing your SBC motor to breathe freely.
- Automatic Transmission Fitment: Compatible with Powerglide and Turbo 400 automatic transmissions (see important notes regarding T400).
Product Specifications for PH 5305
| Feature | Value | Feature | Value |
|---|---|---|---|
| Part # | PH 5305 | Gasket | DSF 9 |
| P/Steering | No | Primary Pipe | 1¾" (44mm) |
| Air Con | N/A | Secondary Pipe | - |
| Oxy Sen | N/A | Outlet | 3" (76mm) |
| E.G.R | N/A | Y Branch | N/A |
| Fitting Time | 3 Hrs | Design | 4 into 1 (Tuned) |
Important Notes:
- Will fit slant plug heads and Powerglide automatic transmissions.
- Will fit Turbo 400 automatic only if the vehicle floor has been modified/cut for correct fitment.
- Requires original engine mounting spacers or PACEMAKER spacers (Part # PEMP 307). Spacers must be fitted to the correct side (RH is 1/4” higher than LH).
- Fits LH hydraulic clutch conversions only.
- Will not fit: Column automatic models or vehicles equipped with Power Steering.
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 PH5305 L/R
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Kingswood / Monaro / Belmont | 1968 | 1971 | Sedan / Coupe / Ute / Wagon | HK, HT, HG | Small Block Chev V8 (283-400) | Manual & Floor 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
4.5 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 4
Would buy again
Size: Small Size
Puppy loves this ball. She managed to tear the fuzzy part open fairly quickly but once it was all the way torn the ball inside that makes the noise is as pictured and she can still play with it regardless of the fuzzy part being taken off. Easy to keep track of as it's a tad bigger than a softball. Puppy loves it and it keeps her entertained.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
How much my dog enjoys playing with it hours of fun
Size: Small Size
This is a very nice product.My dog has enjoyed playing with it very much.He really has a good time.That keeps him occupied for quite some time.A friend Of mine bought 1 for his dog and he enjoys it as well a very good product
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Reviewed in the United States on March 26, 2026
★★★★★ 1
Great turned to not so great
My Doberman (80 pounds in 7 months) puppy absolutely loved this ball. He loves anything noise making so this ball was perfect. Unfortunately, about 2 hours of nonstop play the cover was falling apart. There was no saving in. My pup is rough on toys and this one couldn’t handle it. I let him play without the cover for a little bit but the plastic is VERY hard. I’m not sure what type of plastic it is, but it’s very hard, no your average plastic. It was clunking around and banging into everything possible.
I would love to give it more stars as it might have been perfect for other dogs, or maybe I just got a dud. But having to take the ball away from him was almost heart breaking. Those sad puppy dog ever and him looking everywhere for it. Barking nonstop because, well he want his ball….and being a puppy he is still learning. Had the cover held up for even 24 hours it would have been great. So I have a sad puppy and a lighter pocketbook. It was fun while it lasted.
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Reviewed in the United States on December 27, 2024
★★★★★ 2
Lasted less than a week.
Size: Small Size
This ball was delivered on March 7. It was fun while it lasted, but Today, less than one week later, the squeaker which was the unique fun part of this ball, is dead. The ball is still intact, the soft cover still on it, so our corgi never got to the squeaker - it just stopped making sound. Given the point of this ball is to engage a dog to chase after like it was squealing prey, the death of the squeaker is very disappointing.
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Glow in the dark dog ball
If u shine a bright light on these balls they glow for 15 min. My dog has a double coat and I live in fl so I play outside at night and this glow ball fits the bill. Lots of fun. The ball is made well and so far has survived the jaws of my king shepherd. Im happy with my purchase and have also purchased them for family and friends
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Reviewed in the United States on June 10, 2025