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Description
Pacemaker Performance Exhaust System with Tri-Y Headers for Holden VT Series 1 5.0L V8 Sedan 1997–1999 - PP5050-04 (Rear Pipe Only Variant)Pacemaker Performance Exhaust System with Tri Y Headers & Rear Pipe Only for Holden VT Series 1 Sedan (5. 0L V8) PP5050 04 Unleash maximum horsepower, relentless low to mid torque, and an aggressive, unfiltered muscle car bark from your iron block powerplant with the Pacemaker Sport Systems complete performance exhaust solution featuring dedicated Tri Y headers. Specifically engineered to maximize the distinct scavenging demands and raw roar of the
Pacemaker Performance Exhaust System with Tri-Y Headers & Rear Pipe Only for Holden VT Series 1 Sedan (5.0L V8) - PP5050-04
Unleash maximum horsepower, relentless low-to-mid torque, and an aggressive, unfiltered muscle car bark from your iron-block powerplant with the Pacemaker Sport Systems complete performance exhaust solution featuring dedicated Tri-Y headers. Specifically engineered to maximize the distinct scavenging demands and raw roar of the classic Holden 5.0L (304ci) V8 engine, this high-flow setup is precision-molded to clear the standard floor pan lines, chassis layout, and independent rear suspension geometry of the early VT Sedan platform. By replacing the traditional rear tail resonator assembly with an unrestricted, straight-through "Rear Pipe Only" section and pairing it with advanced multi-layered primary headers (Tri-Y design), it optimizes exhaust gas velocity to completely erase power-robbing backpressure under wide-open throttle. It is the ultimate match for drivers searching for maximum sound output and optimized scavenging performance from their classic V8 sports sedan. Note: Fits Holden VT Series 1 Sedan models (1997–1999) equipped with the 5.0L Holden V8 engine configuration; does not fit Series 2 Gen III LS1 builds.
Features:
Precision-manufactured in Australia to deliver the absolute peak in raw acoustic output and flow efficiency for the classic VT Commodore V8 sedan platform.
- Tri-Y Header Engineering: Advanced multi-secondary layout designed explicitly to boost low-to-mid range torque retention and accelerate overall exhaust gas clearance out of the cylinder head.
- Rear Pipe Configuration: Built with a straight-through rear assembly that deletes the traditional tail resonators for maximum exhaust bark and completely unrestricted flow.
- Premium Materials: Constructed completely from durable Exhaust Grade 409 Stainless Steel for superior longevity under high thermal stress.
- Mandrel Bent Tubing: Heavy-duty pipe structure ensures a smooth, constant internal diameter to optimize gas velocity and prevent restriction.
- High-Velocity Center Section: Features optimized center core performance mufflers to manage gas tracking while preserving a deep, unbaffled acoustic layout.
- Direct Bolt-On Layout: Engineered as a comprehensive, vehicle-specific full bolt-up kit that mounts directly onto existing factory hangers—no custom fabrication required.
| Product Specifications for PP5050-04 | |||
|---|---|---|---|
| Brand | Pacemaker Sport Systems | Part # / SKU | PP5050-04 |
| Product Type | Full Header & Performance Exhaust System Kit | Header Configuration | 8-Cylinder Tri-Y (Try-Y) Extractors |
| Material | 409 Grade Stainless Steel | System Exit Configuration | Rear Pipe Only (No Tail Resonators) |
| Engine Compatibility | 5.0L V8 Holden Iron-Block (304ci) | Body Configuration | Sedan Only |
Important Fitment Notes:
- Specifically engineered to fit Holden VT Series 1 Sedan platforms powered by the original Australian 5.0L V8 iron-block engine configuration (1997–1999).
- Series Specific Engine Fitment: This product only fits the early Series 1 production run featuring the traditional Holden V8. It will not fit VT Series 2 or subsequent platforms equipped with the 5.7L Chevrolet Gen III LS1 aluminum V8 block.
- Sedan Specific Chassis Layout: This configuration features tailor-formed exhaust pipe lengths, specific bend profiles, and bracket placements designed precisely to mount cleanly under the standard sedan floor pan. It will not adapt correctly to Ute or Station Wagon models.
- The "Rear Pipe Only" deletion of the rear resonator assembly creates a significantly louder, unfiltered acoustic profile compared to full-muffler or traditional resonated setups.
- Direct bolt-on design reuses vehicle-specific factory hanger positions. No custom fabrication or cutting is required.
- Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance, clean engine bay sealing, and tight seals under the floor.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Commodore / Calais | 1997 | 1999 | Sedan Only | VT Series 1 Only | 5.0L V8 (Holden 304) | Executive / SS / Berlina V8 | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Sports Exhaust Systems | Five (5) years. |
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4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Making Sense of the Tactics Deployed in the Social Media War
Format: Hardcover
Singer and Brooking’s book, pulls together in one place the various threads of information about cyberthreats from the last few years, weaving them into a coherent, memorable, and understandable(!) whole. All these authors provide exhaustive lists of sources. It’s incumbent on responsible people to understand the tactics of information warfare, because, “[recent Senate hearings] showed that our leaders had little grasp on the greatest existential threat to American democracy,” said Leigh Giangreco in the Washington Post.
These ill-intentioned manipulators understand the human brain is hard-wired for certain reactions: to believe in conspiracy theories (“Obama isn’t an American”); to be gratified when we receive approval (“likes”!); to be drawn to views we agree with (“confirmation bias”). If we feel compelled to weigh in on some bit of propaganda or false information, social media algorithms see this attention and elevate the issue—“trending!”—so that our complaints only add to the virality of disinformation and lies. “Just as the internet has reshaped war, war is now radically reshaping the internet,” the authors say.
Contrary to the optimism of the Silicon Valley entrepreneurs who saw social media as a positive, democratizing force, this new technology is being used to destructive effect at many levels of society. At a local scale, for example, it bolsters gang violence in Chicago; at a national scale, it contributed to the election of fringe politicians; at a regional scale, it facilitated the emergence of ISIS; and at an international scale, it undergirds the reemergence of repressive political movements in many countries.
How to be a responsible citizen in this chaos? Like it or not, “we’re all part of this war,” the authors say, “and which side succeeds depends in large part on how much the rest of us learn to recognize this new warfare for what it is” and how ready we are for what comes next.
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Reviewed in the United States on January 14, 2019
★★★★★ 4
A Must-Read for the Internet Age (Even If It’s a Little Terrifying)
Format: Kindle
If you’ve ever found yourself doomscrolling through Twitter (sorry, X—ugh), arguing with a stranger in the comments section, or wondering why that ridiculous meme is suddenly everywhere, LikeWar is the book that explains why. And let me tell you, it does so in a way that’s as entertaining as it is unnerving.
P.W. Singer and Emerson T. Brooking take a deep dive into the battlefield of social media, where wars aren’t just fought with bullets but with hashtags, viral videos, and AI bots pretending to be real people (or worse, real people pretending to be bots). They connect dots between everything from military psy-ops to online disinformation campaigns, showing how social media has become the new frontline of modern warfare.
The book is packed with fascinating stories—from ISIS using social media to recruit followers like an influencer pushing protein powder, to political campaigns that make you question reality itself. And while the subject matter is serious, the authors keep things engaging with sharp writing, eye-opening insights, and just enough humor to keep you from spiraling into existential dread.
So why four stars instead of five? Well, while LikeWar is undeniably eye-opening, it occasionally gets a little too caught up in explaining things at length. Some sections feel a bit stretched, like that one friend who insists on telling a story with every single detail included. A tighter edit in some places might have made it even stronger.
That said, this book is a must-read for anyone who wants to understand how the internet shapes the real world—whether you’re a journalist, a policymaker, or just someone trying to figure out why your uncle keeps sharing weird conspiracy theories on Facebook. It’s insightful, timely, and slightly terrifying, but in the best way possible.
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Reviewed in the United States on March 17, 2025
★★★★★ 5
A Must Read That Belongs on Every Political, Social, or Military Strategist's Shelf
Format: Hardcover
LikeWar is the manual for warfare in the 21st century, a worthy successor to Singer's Ghost Fleet, and excellent debut work for Brooking. It belongs on the shelf of anyone who wants to seriously understand how war will be fought and social policy developed in the era of Facebook and Twitter.
There is a particularly urgent need for this book at a time when most tacticians have their eyes firmly fixed on enhancing cybersecurity through the protection of systems and hardware. While this is undeniably important, LikeWar reminds us that the information that is transmitted over that infrastructure is no less, and possibly quite a bit more important than the infrastructure itself. This message has never been more urgent than today when democratic nations struggle with balancing the need for an open civil society against the risks of foreign subversion and influence. This is the next great battle. It will be fought in the trenches of Facebook and the swamps of Twitter - wise commanders will bring LikeWar with them as field guide.
LikeWar stands out for its incredible scope and accessibility. Its coverage is comprehensive - everything from the 2016 election to the IDF's influence tactics are explored, analyzed, and fit into a comprehensive thesis about the changing face of war. Read LikeWar and you will have a confident grasp of the major developments in this new theater of combat. Yet the book remains eminently readable - this combat guide does not require a reader to slog through the bone-dry prose of a TRADOC manual or an academic paper. It is quick and engaging yet thorough at the same time.
In short, Singer and Brooking have written a manual for combat in the new millennium that is both engaging and substantial enough to leave their reader a master of the new face of battle.
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Reviewed in the United States on October 3, 2018
★★★★★ 5
Its Good!
Format: Paperback
Move over action-packed thrillers, because LikeWar is the real deal – a mind-bending exploration of the internet's collision with war and politics! It's like a rollercoaster ride through livestreamed terrorist attacks, Twitter wars, and viral misinformation – the online world has become the ultimate battleground!
Who knew that social media could turn average folks into global warriors, with former World of Warcraft addicts foiling war crimes from thousands of miles away? And let's not forget the unexpected warriors – rapper-turned-jihadist PR czars and Russian hipsters waging infowars against the West – it's like a cyber soap opera!
But wait, there's more – China even has a smartphone app to police its citizens' thoughts – talk about big brother on steroids! LikeWar is like a crash course in the web's darkest corners, exposing the truth and burying it at the same time. So buckle up, folks, because the future is networked, and LikeWar is the ultimate guide to surviving the social media battlefield!
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Reviewed in the United States on July 26, 2023
★★★★★ 5
Out of Control with Technology
Format: Hardcover
I found the book very interesting! The authors did a great job of discussing the benefits of different social media sites. While the sites were intended for good use, there is always a downside. Each of the sites were exploited over time for a use other than intended. While this is by no means a surprise, it is amazing how others were quick to use the sites for illegal purposes. The history of how some of the sites were developed was interesting too. Of additional interest was the amount of notes included in the book. A third of the book is devoted to this alone. It shows the level of thoroughness the authors took to allow readers to delve deeper into topics discussed in each chapter. The most pressing question for social media: What is the next level of advancement?
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Reviewed in the United States on July 28, 2024