Description
Sharing from ErikRose: LONGTUBE HEADERS ON THE CAMMED SILVERADO 5.3L SOUNDS LIKE A NASCAR
🎥Installation Video
Flashark Long Tube Headers & Y-Pipe for 1999-2006 Chevy/GMC Silverado/Avalanche/Sierra 1500 4.8L/5.3L/6.0L with Optional Cold Air Intake
Engineered specifically for 1999-2006 Chevy Silverado & GMC Sierra (GMT800), this Stainless Steel Header & Y-Pipe kit is the ultimate upgrade for 4.8L, 5.3L, and 6.0L Vortec V8 engines.
Fix the infamous "Chevy Tick" and broken manifold bolts permanently. By replacing restrictive stock manifolds with high-flow Long Tubes (and optional Cold Air Intake), you eliminate backpressure to unlock 20-25+ HP and a deep, aggressive growl.
Vehicle Fitment:
- 1999-2006 Chevrolet Silverado 1500 4.8L, 5.3L, 6.0L 2WD
- 1999-2006 GMC Sierra 1500 4.8L, 5.3L, 6.0L 2WD
- 1999-2006 Avalanche 1500 1500 4.8L, 5.3L, 6.0L 2WD
*Perfectly designed long tube headers to enhance your truck's performance, with optimized fitment for 4.8L, 5.3L, 6.0L engines in 1999-2006 models.
Note:
- If using a larger 4L80E transmission the bellhousing ears may need to be trimmed for proper clearance.
- Purchase Instructions: Professional installation is highly recommended. While these exhaust systems fit perfectly in most cases, minor modifications may occasionally be required for an optimal fit.
Features:
1.100% Brand new, never been used.
2. Made of high quality T-201 or T-304 or T-409 stainless steel.( According you requirements)
3. TIG welded CNC machine flan
4. Increase high flow air, instantly gain 10 to 15 Hp. / Tq.
5. Improve Sound, Horsepower & Torque
6. Mandrel-Bent For Maximum Performance
7. TIG Weld & Polished Stainless Steelge.
8. Polished finish surface.
9. Direct bolt-on, no modification needed.
10. High-quality aftermarket parts.
11. Professional workmanship.
12. Strict quality control during the process.
13. The item is the same as the picture shown.
14. All necessary hardware, bolts, and gaskets
These long tube headers are engineered for durability and performance, ensuring your 1999-2006 4.8L, 5.3L, and 6.0L engines operate at their peak. With our headers, you can expect a noticeable improvement in exhaust flow, enhanced engine sound, and increased horsepower.
Specifications:
| Item | Specs |
|---|---|
| Color | Black / Silver |
| Finish | Mirror Polished |
| Inlet/Outlet | 1.83" / 2.84" |
| Connection | 2×4-1 Manifold to 3" Y-pipe |
| Craft | TIG Weld, CNC Flange |
| Install | Bolt-on |
Packing List:
1 Set Long Tube Exhaust Header with Y-pipe
Why Upgrade to Flashark Long Tube Headers?
The factory 4.8L, 5.3L, and 6.0L Vortec manifolds are notorious for restricting power and cracking over time. We engineered this system to be the permanent fix.
1. The "Silverado Tick" Killer (Repair & Durability) Stock manifolds warp and snap bolts, causing annoying exhaust leaks. Flashark headers feature heavy-duty TIG-welded flanges that dissipate heat and won't warp.
- Result: No more broken studs, and no more ticking noise.
2. Unlock True LS Power & Sound (Performance) Your Gen III Vortec engine wants to breathe. By eliminating backpressure, you get a 10-20+ HP boost and improved throttle response.
- Bonus: Transforms your quiet truck into a deep, aggressive American V8 rumble.
3. Complete "Bolt-On" System with Y-Pipe Don't get stuck with headers you can't connect. Our kit includes a matching 3-inch Y-Pipe, connecting directly to your exhaust system.
- The Benefit: Saves you hundreds of dollars in custom welding work at a muffler shop.
About the GM Gen III Vortec V8 Platform (4.8L / 5.3L / 6.0L)
The Chevy 5.3L V8 (along with the 4.8L and 6.0L) are legendary engines found in the GMT800 Silverado and Sierra. Known for their reliability and potential, they are great all-rounders. However, the stock cast iron exhaust manifolds are the primary bottleneck, restricting airflow and limiting the engine’s output.
Upgrading to Flashark Long Tube Headers releases this chokehold, boosting horsepower, torque, and throttle response across all three engine sizes. Whether you drive a 4.8L work truck or a 6.0L beast, these headers are designed to unlock the true potential of your Vortec engine.
FAQ
Q1: Will these headers fit my 1999–2006 Silverado/Sierra 1500?
A1: Yes — these long tube headers fit 1999–2006 Chevy/GMC Silverado and Sierra 1500 2WD models with 4.8L, 5.3L, and 6.0L engines.
Note: Some early 2500 models may have clearance issues due to older chassis design.
Q2: Do these headers work with 5.3L 4WD models?
A2: Flashark Long Tube Headers are designed for 2WD models, but some customers have successfully installed them on 5.3L 4WD models with minor modifications. Depending on your setup, slight adjustments may be needed to ensure a perfect fit.
Professional installation is strongly recommended to ensure proper fitment and performance.
Q3: Do these long tube headers improve 5.3L performance?
A3: Yes, installing Flashark Long Tube Headers on your 5.3L engine can provide noticeable performance gains, adding 10-15 HP and torque. You’ll see improved acceleration, better mid-range power, and enhanced towing capabilities.
Q4: Will these work with 5.3L Silverado headers?
A4: Flashark headers are a great fit for 5.3L Silverado models. By upgrading to long tube headers, you’ll significantly improve exhaust flow, boosting horsepower and enhancing engine efficiency. You’ll also enjoy a deeper, sportier exhaust sound.
Q5: Will these headers fit my 2005 Silverado 5.3L?
A5: Yes, Flashark Long Tube Headers are designed to fit the 2005 Silverado 5.3L. They offer a perfect fit with a direct bolt-on installation, improving horsepower, throttle response, and sound. Minor adjustments may be needed in some cases depending on aftermarket parts.
Q6: Do I need a tune after installing these long tube headers?
A6: A tune is not required for basic fitment, but:
- A tune is recommended to maximize horsepower gains.
- A tune may be required to avoid check engine lights depending on your O2 sensor configuration and local emissions requirements.
Q7: Will these work with a 4L80E transmission?
A7: Yes, but when using a larger 4L80E transmission, the bellhousing ears may need to be trimmed for proper clearance.
Q8: Will these headers cause clearance issues?
A8: Only in two situations:
- Early 2500 models.
- 4L80E transmission without trimming.
Q9: Do these headers require cutting or welding?
A9: In most cases, these headers and Y-pipe bolt on directly. However, depending on your existing exhaust setup, a slight modification to the exhaust system may be required for the perfect fit.
Q10: Do these headers improve horsepower?
A10: Yes. Customers typically gain 10–15 HP and torque thanks to improved exhaust flow.