Build a cleaner, stronger-breathing LS swap in your square body Chevy or GMC. These polished 304 stainless steel long tube headers are made for GM LS engine conversions in 1973-1987 Chevrolet C10, K10, C20 and K20 and GMC C1500, K1500, C2500 and K2500 pickups, 2WD and 4WD, plus 1973-1991 Chevrolet and GMC Suburban (half and 3/4 ton), 1973-1991 4WD Blazer (K5) and Jimmy, and 1973-1982 2WD Blazer and Jimmy. Mandrel-bent 1-3/4 inch primary tubes keep full diameter through every bend and feed 3 inch merge collectors, while CNC-machined flanges seal flat against LS cylinder heads.
This version includes basic fiber/graphite gaskets. Header bolts must be purchased separately.
FEATURES
• Fits 2WD and 4WD half and 3/4 ton pickups through 1987, plus Suburban, Blazer and Jimmy through 1991 with a Gen III / IV V8
• For 4.8L, 5.3L, 5.7L LS1, 6.0L and 6.2L engine conversions; not for factory 305 / 350 / 400, big block or 2014+ LT engines
• Polished 304 stainless steel with mandrel-bent 1-3/4 in. primaries, 3 in. merge collectors and CNC-machined flanges
• Needs LS conversion motor mounts and a custom exhaust from the collectors back; not for 1 ton or any 1972 and older vehicle
• A 4L80E, TH350 or TH400 may need the bellhousing ears trimmed for clearance; confirm year, model and engine in the chart
| Specification | Details |
|---|---|
| Product Type | LS Swap Long Tube Exhaust Headers |
| Brand | Certified Automotive Experts |
| Material | 304 stainless steel |
| Finish | Polished |
| Primary Tube Diameter | 1¾ inches |
| Collector Diameter | 3 inches |
| Collector Design | Merge collectors |
| Tubing | Mandrel-bent |
| Flanges | CNC-machined |
| Engine Type | Compatible LS-style V8 engines |
| Listed Engine Sizes | 4.8L, 5.3L, 5.7L LS1, 6.0L, 6.2L |
| Drivetrain Fitment | 2WD only |
| Intended Use | LS engine swaps |
| Vehicle | Model Years | Drivetrain |
|---|---|---|
| Chevrolet C10, C20, C30 pickups | 1967–1986 | 2WD |
| Chevrolet R10, R20, R30 Square Body pickups | 1987–1991 | 2WD |
| GMC C1500, C2500, C3500 pickups | 1967–1986 | 2WD |
| GMC R1500, R2500, R3500 Square Body pickups | 1987–1991 | 2WD |
| Chevrolet Blazer | 1967–1991 | 2WD |
| GMC Jimmy | 1967–1991 | 2WD |
| Chevrolet/GMC Suburban | 1967–1991 | 2WD |
| Question | Answer |
|---|---|
| Which engines are compatible with these headers? | Select LS-style V8 engines in 4.8L, 5.3L, 5.7L LS1, 6.0L, and 6.2L sizes. |
| Will these headers fit a 4WD truck? | No. They are designed for 2WD applications only. |
| Can I use these headers with a standard Chevy small-block or big-block engine? | No. They are designed specifically for LS engine swaps and do not fit standard SBC or BBC engines. |
| Will they fit 2014-and-newer LT engines? | No. They are not compatible with 2014-and-newer LT-series engines. |
| Will these headers fit with a 4L80E, Turbo 350, or Turbo 400 transmission? | Bellhousing ears may need to be trimmed for proper clearance when using these transmissions. |
| What are the primary and collector diameters? | The headers feature 1¾-inch primary tubes and 3-inch merge collectors. |
| What material are the headers made from? | They are made from polished 304 stainless steel. |
Before ordering: Confirm your vehicle's model year, 2WD configuration, LS engine swap setup, engine mount arrangement, and transmission clearance requirements to ensure compatibility.
WARNING: RACE / COMPETITION USE ONLY
This part is built and sold only for racing vehicles used solely in closed-course competition. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. Off-road or off-highway use is not competition use. Installing this part on a vehicle used on public roads may violate the federal Clean Air Act, 42 U.S.C. 7522(a)(3), and state law, and may result in civil or criminal penalties, failed inspections and loss of registration. Emissions laws vary by state. Check yours before you buy.
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. THE SALE, USE OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. 7522(a)(3)).
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$269.99
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