The best LQ4 long tube headers depend on the vehicle receiving the swap. Of these options, the Mustang headers explicitly list the 6.0L LQ4, while several truck-oriented choices are designed for LS swaps in classic Chevy and GMC platforms. Compare chassis fitment, primary tube size, included hardware, and stated exclusions before buying. The table summarizes each option and its clearest use case; confirm the exact year, body style, engine configuration, and clearance requirements against the product listing.
| Product | Best suited for | Notable detail |
|---|---|---|
| Mustang LS Swap Headers | 1979–2004 Mustang LQ4 swaps | 1-7/8-inch primaries; 3-inch collector |
| Polished C10/K10 Headers | Classic GM truck swaps | Gaskets and 12-piece bolt kit included |
| 304 Stainless Truck Headers | Specified 2WD Chevy and GMC trucks | Does not fit OBS body style |
| Silverado LS Swap Replacement | Listed Chevy Silverado/C-series applications | Polished, full-length design |
| Ispeedytech C10 Headers | Listed 1960–1998 Chevy/GMC trucks | LS swap application |
Mustang LS Swap Long Tube Headers
Best for: A 1979–2004 Ford Mustang Fox Body or SN95 build using an LQ4 or another listed LS engine. This is the clearest match for LQ4 buyers because the stated compatibility specifically includes the 6.0L LQ4/LQ9, along with 4.8L, 5.3L, LS1, LS2, LS3, and L92 engines.
The headers use 1-7/8-inch mandrel-bent stainless steel primaries and a 3-inch collector. The listing describes the long-tube layout as supporting exhaust scavenging and engine breathing; actual results depend on the overall build and setup.
Limitation: These are for LS engine swaps, not factory Ford engines. Verify the exact Mustang year and swap configuration before purchase.
Polished C10 and K10 Swap Headers
Best for: Owners building an LS-swapped 1960–1987 Chevy or GMC C10/K10, or a listed 1988–1991 Square Body 2WD or 4WD truck. The specified 1-3/4-inch primaries and formed 3-inch merge collector make the product details useful for comparing exhaust dimensions.
This option includes multi-layer steel gaskets and a 12-piece header bolt kit. The listing also provides a fitment and clearance video intended to help buyers assess installation on a test truck. Those details make it a practical choice for buyers who want hardware included and a visual reference before ordering.
Limitation: The listed applications are specific to truck platforms and years. Check the listing’s fitment information and video against the exact vehicle and swap; do not assume every LQ4 installation has identical clearance.
304 Stainless Headers for Classic GM Trucks
Best for: LS swap builds in the specified 1960–1987 Chevy and GMC 2WD trucks, including C10, C20, and C30 models. The listing also mentions 1988-and-up 2WD Square Body trucks. Its 304 stainless steel construction, CNC-machined flanges, TIG-welded joints, and mandrel-bent tubes are the stated construction and design features.
Choose this option if the listed truck application and materials align with your build. The product description emphasizes corrosion resistance and airflow-oriented tube bends, but it does not provide primary diameter or collector measurements in the supplied details.
Limitation: The listing explicitly says it does not fit OBS body style. Confirm what the seller means by the applicable Square Body years before ordering, particularly for later trucks.
Polished Silverado LS Swap Headers
Best for: Buyers considering a full-length, polished header for the listed Chevy Silverado, C10, or C1500 applications. The provided product details describe a long-tube replacement and name LS1, LS2, LS3, LS6, and LS7 engines across the stated 1960–1998 range.
This is a straightforward option to compare when appearance and a polished finish matter. However, the supplied engine list does not name the LQ4, and the broad year and vehicle description should not be treated as proof of fitment for every truck or swap combination.
Limitation: Confirm LQ4 compatibility, chassis year, and required clearances with the seller before purchase; those details are not established by the provided feature list.
Ispeedytech C10 Long Tube Headers
Best for: Buyers researching an LS swap for the listed 1960–1998 Chevy and GMC Silverado, Sierra, C10, or C1500 applications. The product name identifies LS swap use and lists LS1, LS2, LS3, LS6, and LS7 engines.
This product may be worth comparing if your truck falls within the named vehicle range. The available product data does not specify materials, tube dimensions, included gaskets, or bolt hardware, so those details should be checked on the listing before deciding.
Limitation: LQ4 is not among the engines named in the supplied information. Verify compatibility for an LQ4 swap rather than inferring it from the LS swap label.
Buying Guide: How to Choose LQ4 Long Tube Headers
Does the listing name your engine and vehicle?
Start with the exact engine and chassis. The Mustang option explicitly names the LQ4 and its Mustang year range. Truck options describe LS swap applications, but the supplied engine lists do not consistently include LQ4. Ask the seller to confirm fitment for your specific truck, engine, and installation before ordering.
Which dimensions and materials matter?
Compare primary tube diameter and collector size when provided. The Mustang headers list 1-7/8-inch primaries and a 3-inch collector; the polished C10/K10 option lists 1-3/4-inch primaries and a 3-inch outlet. The other supplied descriptions do not provide those measurements. Stainless steel grade, flange construction, and finish can also guide comparison, but they do not establish vehicle fit by themselves.
What should you verify before buying?
- Confirm the vehicle’s model year, body style, drivetrain, and swap configuration against the listing.
- Check clearance information and whether the seller identifies any excluded body styles.
- Review whether gaskets and header bolts are included; only the polished C10/K10 listing explicitly names both.
- Ask about missing specifications, including LQ4 fitment, tube size, collector size, and installation clearance.
Frequently Asked Questions
Which listed headers explicitly fit an LQ4?
The Mustang LS swap headers explicitly list the 6.0L LQ4/LQ9 and 1979–2004 Mustang Fox Body and SN95 applications. Confirm the exact vehicle configuration before purchase.
Are all LS swap headers compatible with an LQ4?
No. An LS swap label alone does not confirm LQ4 fitment. Check the product’s engine list and vehicle-specific fitment details.
Do the Mustang headers fit a factory Ford engine?
No. The listing says they are designed for GM LS engine swaps and are not designed for factory Ford engines.
Which option includes gaskets and bolts?
The polished C10/K10 listing specifies multi-layer steel gaskets and a 12-piece header bolt kit.
Can the 304 stainless truck headers fit an OBS truck?
The listing explicitly says the headers do not fit OBS body style. Verify the truck’s body style before ordering.