00 – $ 4,200. Thick, 2. Material Type: Mild Steel Schoenfeld Suzuki GSXR Headers, 1-3/8 Inch Primary w/Muffler. Many aftermarket heads also utilize the stock Big Block Chevy bolt pattern. 2 inch primary. The primary tube size is 1-3/4" and the collector Hooker 2105-1HKR Long Tube Headers, 10 Inch Length, Ceramic Coated Primary Tube Diameter: 2" $659. Quick Shop. , Steel, Temporary Paint, Chevy, 396, 402, 427, 454, Kit. Flange Stubs: Included with our LS7/LSX header kit are (8) formed stubs to help speed up your fabrication process. ) and get Free Shipping on Orders Over $109 at Summit Racing! Jun 16, 2021 · Most of our techs agree that a street application 350 will benefit well from a header with 1 1/2” to 1 5/8” diameter primary tubes and 2 1/2 or 3 inch collectors. SBC Stahl header flanges. Adapters. Features 2 inch tube diameter. Exhaust Header Long Tube; 1. JEGS offers a wide selection of exhaust manifolds and exhaust headers from brands such as Hedman, Hooker, JBA, Pace Setter, Doug's Headers, JEGS Description. Header Size: Bigger Isn’t Always Better. 1150-1250 HP. These flange stubs are formed to the exact flange shape and come in 1 5/8" or 1 3/4" primary tube sizes Nov 15, 2013 · We completed the lineup with a set of Hooker Block Hugger shorty headers, also in a 1-inch primary tube diameter. 000 in. 2-1/4 Inch. Our test engine is a high-performance street big-block Chevy based upon a stock Flowtech 11553FLT Upright Headers, Big Block Chevy. 95 /set. Port Size: 1. It is also missing hardware. Choose Your Primary Tube Diameter. Kooks 2-Inch x 3-Inch Long Tube Headers and GREEN Catted Connection Kit (20-22 Mustang GT500) $3,156. #SBPT-200 SB Pro Tour header for stock chassis with stock steering box. Port Size: 1 7/8" or 2" Flange Stubs: Included with our SB2 header kit are (8) formed stubs to help speed up your fabrication process. Our Turbo Headers are constructed from an American made 304 Stainless Steel and are fully purge TIG welded with 3/8” thick header flanges on our off the shelf Flowtech 11702FLT SB Chevy Lakester Header, 1-5/8 Inch Primaries,Black. Outlet, Chevy, Camaro, BBC, 1967-1969, Pair Find Summit Racing™ SBC Header Weld-Up Kits and get Free Shipping on Orders Over $109 at Summit Racing! Do it yourself with help from Summit Racing™ and our SBC header weld-up kits. 99 /kit. They also work great when using Raised Port Heads on a Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch and 2-1/2 Inch collector diameters in 10" - 8. 5 in. What this size does is creates a faster removal of spent gas and also develops just enough backpressure for a broad torque response. It will be higher at (nearly) any crank position. Series race cars with Chevy power. Exhaust Port Shape: Round. These header flanges are specifically made for the SBC Stahl Pattern 2" Round Port head. 1/3/4 inch primary. Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. 09/113. 95 Flowtech 12165FLT Small Block Ford Turbo Headers, Polished 304 Hooker 2001HKR Block Hugger Header, SB Chevy, 1. The turndowns are expanded on the inlet side to easily slip over 3-1/2" O. 1-5/8" primary tubes and 2-1/2" collectors aid in fitting tight clearance applications. 5" lengths. Our selection of 1968 Chevy Camaro big block headers are available in Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch, 2-1/2 Inch collector diameters in 10" - 9. Exhaust Port Shape: Oval. Material: Mild Steel. “We’ve seen 950 horsepower pro Also for Smith Racecraft, Martz & Checkered Racing front clips. If you drive it on the street much a larger tube may hurt low end power. Line: FLT. We incorporate Double Slip Merge collectors on higher HP & extreme abuse applications to help reduce thermal stress which causes header failure. These come painted black for corrosion LS Up and Forward. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Ball and socket flange and Ball and Primary Tube Diameter: 2" $319. Find Headers Block hugger Header Style, 1 3/4 in. ) and get Free Shipping on Orders Over $109 at Summit Racing! Header Drag Race 1967-1969 BBC Tall Deck Camaro 2. Specify Desired Flange Style. RMRE manufactures several header flanges for both small block and big block Chevrolet cylinder heads. , Chevrolet, GMC, Small Block LS, Pair Part Number: HOK-70101503HKR Not Yet Reviewed Sep 24, 2018 · Machined from Everlast 304L stainless steel, Stainless Works headers use ¼-inch CNC laser-cut flanges mated to 1 1/2-inch-diameter primary tubes. Sold as a kit. Hedman Hedders & Trans-Dapt Performance Products are two of the hot rod industries original manufacturers, dating way back to 1954. #10 · Jul 8, 2014. Advertisement. 1 7/8 inch primary. We have the adapter plates in stock. Earls Classic Hose and Hose Ends. Collector, Steel, Painted, Ford, Mustang, Big Block Chevy Swap, Pair Part Number: HOK-6234HKR Not Yet Reviewed Headers, Husler® Dyno Weld-Up Kits, 2 1/8 in. 4L/454 Headers 2 1/4 in. Our kits are delivered with eight CNC mandrel-bent primary tubes and two collectors crafted from 16-gauge aluminized steel. Universal Fit, Block Hugger Header Tube Type, Steel. Primary Tube O. Collector, Steel, Black Painted, Each. Primary, 3 1/2 in. 625 Inch Tube Size Tight-Fit Small Block Chevy Block Hugger Headers, Raw Primary Tube Diameter: 1-1/2" $729. If you put a 2 1/4-, 2 1/8- or even 2-inch header on a relatively stock 350 Chevy, there will be no exhaust velocity at the collector. When the exhaust valve cracks, the flow rate is off the chart until the pressure drops. 1979-1993 Ford Mustang with a 351(9. Headers are available without collector reducers, which can be fastenened to the Headers in a variety of ways (Slip fit). 125 in. Quick Browse our catalog of 386 Sprint Car Headers hand picked by the experts at Speedway Motors. $ 1,950. Primary Tube Outside Diameter (in. 99]. 5 Deck) Small Block Ford for the Following Cylinder Heads: Dart & World 210 & 225 / Pro Topline 3" Inline Bolt Pattern Headers are one of the top performance parts added to vehicles. Header Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch, 4-1/2 Inch collector diameters in 12" - 8. These flanges are CNC machined from 5/16″ thick mild steel to provide a proper fit. 00 Learn More. Headers, Fenderwell, 1 7/8 - 2 in. 95 Included are: Flanges:2 American made precision laser cut 3/8 thick header flanges to fit the D-Port LS7/LSX. Chevy C10 Pickup Headers in-stock with same-day shipping. (16) Header Tube Type: Shorty. All Hose Groups. Camaro/Firebird 82-92 Small Block Chevy Stainless Long Tube Headers 1-3/4". 84" cylinder bore space heads. #SBPT-200A version can be made for factory AC. Add to compare Compare. We carry over 250 different header flange designs, so if you Description. 42. 75 Inch Primary. Flanges, 2. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange and Ball and socket). So you need a minimum of a 3” collector. $778. Turbo Manifolds. $343. 72 Monte Carlo (3865 lb Street/sStrip Orange Monster) 6. These headers have 1 3/4 inch primary tubes and come with a weld-on, gasketless ball/socket style collector adapter. These small block Chevy tight fit headers work well on early hot rods with narrow frame widths due to the slim 4" distance from the flange to outermost point. This will cause the engine to fall on its face. Primaries, 3. (93) BBK 1-7/8-Inch Long Tube Headers; Titanium Ceramic (11-23 Mustang GT) $799. For racing applications such as circle track Headers, Racingheart, Long Tube, 2 1/8 in. Speedway 1982-97 Chevy S10 Small Block V8 Swap Headers, Raw Finish. We don't sell cheap 1964 Chevy Chevy II Headers made from thin, low-grade materials, but without our 1964 Chevy Chevy II Categories/ Plumbing AN Fittings and Hose. Jumpstart Your Next Project! Bring your custom exhaust headers together with header collectors! Summit Racing Equipment has the best selection of trusted brands. Primary Tube Diameter: 1-1/2" $407. Primary Tube Diameter: 1-1/2" $322. From $1,452. Header Collector, 4 Into 1, Slip-on, 1. 1 7/8" Primary Tube Header Kit: 450-550 Horse Power 2" Primary Tube Header Kit: 550-650 Horse Power 2 1/8" Primary Tube Header Kit: 650-800 Horse Power Add A Transitional Merge Collector For That Extra Performance Edge Header Flanges, 304 Stainless Steel, 3/8 in. Known primarily for exhaust headers, engine mounts, carburetor spacers and adapters, and chrome and aluminum customizing accessories, these two pioneering companies have 1000's of components to help your GM, Ford or MOPAR car or truck run stronger and look cooler. Primary Tubes, 3. Available with special D-Port flange for D-port cylinder Find Headers 1 3/4 in. Patriot Exhaust H8062 Headers, 67-69 Camaro BB, Raw, 2 Inch (1) Header Tube Type: Big Block Chevy Weld Up Header Kit, 2 In Primary, 3. Part Number: HED-65670 Not Yet Reviewed For street cars, primary diameters generally range between 1-1/2- to 1-7/8-inch diameter primary tubes, while racing applications can occasionally call for 2-inch primaries. 600-750. Jun 17 - Jun 19. The full-length header design offers an easier exhaust connection than shorter, block hugger designs. These Long Tube Big Block Chevy Headers for 67-69 Camaro and 68-74 Nova are designed for use with a 572 Tall Deck Engine using cylinder heads that use the factory Big Block Chevy bolt pattern. Header Tube Type: Long Tube. 750-850. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Ball and socket, Slip fit and Slip-on). . These double Speedway Motors offers many types of headers for 1967 Chevy Camaro, including Full-length, Mid-Length, Shorty and Tri-Y. To get 4 tube into 2 1/2” the tubes can be max 1 1/4” into the collector. 0 in. Therefore, no vacuum is created at the collector. /set. Whether on or off the track, headers provide more horsepower and improved exhaust sound. Answered by: jshook. 848" D-Port. Part Number: SUM-670201-SS Not Yet Reviewed May 10, 2020 · Vega$69. We don't sell cheap 1968 Chevy Camaro Headers made from thin, low-grade materials, but without our 1968 Chevy Camaro weld-up kits you can still save money. For LS1 engines 2 inch tube diameter Gaskets included Sold as a kit Aug 21, 2020 · 1-5/8" will "support" far more than 500 hp, it will simply suffer worse pumping loss. Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U. Also in Plumbing AN Fittings and Hose. This one requires an adapter plate mounted to a 23 deg. Application Specific Parts. 95 /kit. Hardline. 25" lengths. Kooks 2-Inch Long Tube Headers with High Output GREEN Catted OEM Connections (15-23 Mustang GT) $3,651. Weld Up Header Kits & Accessories. 625 Find CHEVROLET Chevy small block Gen III/IV (LS-based engines) Headers 2 in. 75" lengths. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Slip fit and Ball and socket flange). Silver ceramic block hugger headers featuring 1-5/8 primary tubes for 1964-up Chevelle, El Camino, and pickup truck applications with small block Chev Part Number: SNH-CC10AP158SEC Not Yet Reviewed Speedway Motors offers affordable headers for Small Block Chevy (SBC) engines. Primaries, 3 in. It retains the same 2-inch primary size and 2-1/2-inch collector size for awesome flow. Kooks Headers improves your vehicles exhaust performance instantly. Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch and 2-1/2 Inch collector diameters in 10" - 8. 99. Vapor Guard. Opening the valve 5 degrees earlier may erase it. Check Vehicle Fit. 53 USD. This precision laser cut SBC Stahl Pattern 2" Round Port header flange is cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U. Summit Racing™ SBC header weld-up kits are available in short and long tube styles Primary Tube Diameter: 2-1/8" $1,337. Speedway Motors offers many types of headers for Sprint Car, including Full-length, Chassis, Block Hugger, Shorty, Mid-Length, Roadster, Lake Style, Fenderwell, 4 to 1, Upswept, Circle Track, Tri-Y, Zoomie, Crossover, Long Tube and 180 Degree. ) and get Free Shipping on Orders Over $109 at Summit Racing! Natural, 3-Bolt Flange Small Block,Chevy SBC Stahl header flanges Small Block Chevy Header Flanges. These flange stubs are formed to the exact flange shape and come in 1 7/8" or 2" primary tube Hedman Hedders & Trans-Dapt Performance Products are two of the hot rod industries original manufacturers, dating way back to 1954. Jan 8, 2004 · We swapped out the 1 5/8-inch headers for 1 ¾-inch long-tube headers and found additional low-end power from 3,000 through 3,800 rpm, with increases of roughly 4 to 6 lb-ft of torque and horsepower. Tight-Fit Small Block Chevy Block Hugger Headers American Racing Headers Gen 1 Camaro/Firebird and Gen 2 Nova Headers CABB-67218312HR Headers, Stainless Steel, Natural Finish, 3/8 in. ) and get Free Shipping on Orders Over $109 at Summit Racing! Use your Summit Racing SpeedCard today, and get up to 10% back - Get Details! Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Camaro Gen 2 LS Swap 1970-1981 Headers. Patriot Exhaust H8092 Big Block Chevy Header Kit, 2-3/8 Inch. $351. American Racing Headers 2nd Generation Camaro/Firebird and Nova X-Body Headers CAG2LS-70200300HR Headers, Stainless Steel, Natural Finish, 3/8 in. Flowtech 11553FLT Upright Headers, Big Block Chevy. Headers, Long Tube One-piece, Steel, Silver Ceramic Coated, Round Port, Buick, Chevrolet, Oldsmobile, Pontiac, Small Block LS, Pair Part Number: DOU-D3349 5. The unique design of the collector sets Stainless Works headers apart from other manufacturers. Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch, 2-1/2 Inch and 2 Inch collector diameters in 10" - 8. “In our research we’ve discovered that 1-7/8-inch primaries cover about 95 percent of the engines that are built,” said Browning. 1050-1150 HP. Overview. 72BBMonte. 850-950 HP. Header Tube Type: Chassis Patriot Exhaust H8055-1 Tri-5 Header, 55-57 SBC, CC, 1-5/8 Inch Correctly matching exhaust port size to primary tube diameter helps maintain exhaust gas velocity Hooker 2129HKR Super Competition Long Tube Header, 10 Inch Length. 605x category This is Garage Sale priced because it has small scratches and dings. Made in the Part #: 43011FLT. The long-tube tri-y pipes are then attached to 2 1/2-inch collectors with three-bolt collector flanges. I agree with Davey and Billy. Speedway Motors offers many types of headers for 1964 Chevy Chevy II, including Full-length, Fenderwell, Chassis, Mid-Length and Tri-Y. Universal sprint style design. So the primary tube are smaller or reduced before the collector. 625 Inch Primary Tube; 3 Inch Collector; Mild Steel; Black Painted; Ceramic Coated; Includes Premium Gaskets And Hardware; For Race Use Only. 950-1050 HP. Speed-Seal and Speed-Flex. 125 Inch Ceramic Coated. Locate the cubic inch of your engine in the left hand column, then look across that row to the horsepower range that your engine falls into to see what size tubes should be used. ” Choosing a primary-tube diameter can follow these simple rules: Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch and 2-1/2 Inch collector diameters in 10" - 8. We don't sell cheap 1962 Chevy Chevy II Headers made from thin, low-grade materials, but without our 1962 Chevy Chevy II weld-up The C12 is a full-length, 1-5/8″ or 1-3/4″ primary tube header for performance engines in 1964-Up Chevrolet Chevelle, Malibu, Monte Carlo, and El Camino (GM A-Body) applications. These headers come with gaskets and header bolts for easy installation. D. Diameter Round Port, Chevy, Big Block, Pair. Engineered for maximum flow, these kits feature equilized port exit angle, large radius mandrel bends and true equal length primary tubes. GPHeaders’ Stainless Steel Turbo Headers are available for most popular applications such as Big and Small Block Chevys, Big and Small Block Fords and LS engines. Flange Style: Standard. Dynatech 701-31011 Left Header Chevy Street Stock, Stepped. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Ball and socket flange, Ball and Jun 7, 2024 · Weld up your own headers. ) and get Free Shipping on Orders Over $109 at Summit Racing! Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch and 2-1/2 Inch collector diameters in 10" - 8. JEGS offers a wide selection of header kits from top manufacturers such as Dynatech, Hooker Headers, Patriot Exhaust, Schoenfeld, JEGS, and more. Our Turbo Headers are constructed from an American made 304 Stainless Steel and are fully purge TIG welded with 3/8” thick header flanges on our off the shelf headers. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Slip fit, Ball and socket flange, Slip Shop 1987 Chevy S10 Headers and Exhaust Manifolds and get Free Shipping on orders over $149 at Speedway Motors. $599. Feb 9, 2011 · C4 Tech/Performance - 2" inch primary & 3-1/2- 4" Collector Headers - Are there any available headers for a C4 with 23 degree or 18 degree SBC cylinder heads that have 2 inch primary tubes X 27-28 inches in length and have 3-1/2 to 4 Inch exaughst collectors ? Shop from 22 1964 Chevy Chevy II Headers hand picked by the experts at Speedway Motors. But McJacks . Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Ball and socket and Slip fit). S. These flanges fit the stock 4. Round tube holes from 1 3/4” to 2 1/8” available. Material Type: Mild Steel. head. Each exhaust header kit is made from high quality materials and assembly so you can Feb 16, 2022 · It’s like it’s falling out into space. T. Color: 2" x 3-1/2" Stainless Steel Long Tube Headers. 75 in. The long tube headers have 3 inch slip-on style collectors. Replacing or upgrading your exhaust manifolds or headers is necessary for both engine performance and sound. exhaust tubing. Shipping is not included. Find CHEVROLET Chevy small block Gen I Headers 1 7/8 - 2 in. 75 mph 1. 95 Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch, 2-1/2 Inch collector diameters in 10" - 9. 5 In Collector (15) Header Flanges: 2 American made precision laser cut 3/8 thick header flanges to fit the Chevy SB2 heads. Our selection of 1967 Chevy Camaro big block headers are available in Primary Tube Diameter: 2-1/8 to 2-1/4 to 2-3/8" $1,372. Dynatech kits are complete weld-up drag race header packages great for most popular NHRA, IHRA and E. 5 In Collector (15) Header Jan 7, 2016 · C1 1955-’62 McJacks 1-3/4-Inch Small-Block Ceramic/Copper Coated Header. Find Headers 1 1/2 in. Speedway Motors offers many types of headers for 1962 Chevy Chevy II, including Fenderwell, Full-length, Chassis, Shorty and Mid-Length. Outlet, Chevrolet, Camaro, LS1 Swap, 1970-81, Pair Hooker 2001HKR Block Hugger Header, SB Chevy, 1. Simple math. There are many factors that go into choosing the right pipe diameter—engine size, horsepower, intended use of Schoenfeld Header Collectors SO73041. Tube Size (in): 1-5/8 Inch. and are machine surfaced. 304 stainless steel header builder kit includes two 3/8 inch thick laser-cut flanges (to be specified by customer), twelve J-bends (one 6-inch long leg and one 12-inch long leg), two formed collectors and two filler diamonds to connect the tubes together. NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS Header kit for LS1 engines. ) and get Free Shipping on Orders Over $109 at Summit Racing! Save up to 10% on the Powersports Parts you Need! Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Jun 14, 2012 · Consider these five points: 1. Weld up header kits are a great way to add power and performance to your vehicle. Shop Flowtech Exhaust 350 Chevy Small Block V8 Headers and get Free Shipping on orders over $149 at Speedway Motors. These header flanges are specifically made for Big Block Chevy heads. 0 out of 5 stars ( 2 ) Patriot Exhaust H8062 Headers, 67-69 Camaro BB, Raw, 2 Inch (1) Header Tube Type: Big Block Chevy Weld Up Header Kit, 2 In Primary, 3. No AIR Tubes, No Cats, Comes with 2-1/2" or a 3" od slip joint header collector. Headers are made of raw mild steel and mandrel bent for a professional look and better performance. That does not compute unless the tubes are less that 1 1/2” diameter. 00 in. Apr 19, 2024 · The Jegs 555-30066 header will fit a '90 C1500 with small block Chevy. $223. 32 60 ft. 95. We don't sell cheap 1967 Chevy Camaro Headers made from thin, low-grade materials, but without our 1967 Chevy Camaro weld-up kits you can still save money. HP. Our Small Block Pro Tour headers are available in tube sizes up to 2”. Headers are available with or without collector reducers, which can be fastenened to the Headers in a variety of ways (3-bolt flange, Ball and socket and 2-bolt Header collector diameter and length are also tuning elements to consider, which is why we offer 3 Inch, 3-1/2 Inch and 2-1/2 Inch collector diameters in 10" - 8. Chevy G-Body LS Swap 1978-1988 Headers. All headers and kits are designed to use Shop from 13 1962 Chevy Chevy II Headers that deliver on our promise of quality. One of the main considerations in choosing a set of headers is the diameter of the primaries, which are the pipes that connect directly to the exhaust ports. 5. 625 Inch Primary Tube; 3 Inch Collector; Mild Steel; Black Painted; Includes Gaskets And Hardware; For Race Use Only; Without Angle Plug Heads; With Exhaust Manifold Mounted Alternator; Use Bracket Part Number: 10031FLT. Collector, Brodix 18 Degree Flange, S-10/Sonoma, Small Block, Pair Part Number: SCH-199VAB18 Not Yet Reviewed Part #: 11100. 1 1/2” plus 1 1/2” equal 3”. You need an 800 hp 540 or larger to see benefits of 2 1/8" headers. Find Header Collectors 2 in. Speedway Motors offers many types of headers for 1968 Chevy Camaro, including Full-length, Mid-Length, Shorty and Tri-Y. 2982 posts · Joined 2011. They are available for several different SBC heads and various primary tube sizes for use with and without adapter plates. Did you find what you are looking for? Shop Chevy C10 Pickup Headers and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. Tight-Fit Small Block Chevy Block Hugger Headers, Stainless Steel Competition Long Tube Header, 10 Inch Length 162 SB Chevy IMCA Headers, 1-3/4 Primary, 3-1/2 Jul 6, 2014 · 7. Find CHEVROLET 7. Correctly matching exhaust port size to primary tube diameter helps maintain exhaust gas velocity for better volumetric efficiency, which is why we offer 1981 Chevy Corvette long tube headers tube diameters ranging from 1-5/8", 1-7/8", 1-3/4" As partners in your passion, we aim to supply the 1981 Chevy Corvette big block headers you need to get Jul 26, 2017 · Ultimately, we settled on a 2-1/8-inch straight primary dimension to go with a 4-inch collector, and since Kooks did not offer a shelf-stock header for our application, we chose to order the Race Header Builder kit [Kooks PN WK2880 with flanges, $899. Hedman’s long-tube headers are available with 1 3/4, 1 7/8 or 2 inch primaries or a 1 7/8 to 2 inch stepped version for unbeatable torque and horsepower gains. ) and get Free Shipping on Orders Over $109 at Summit Racing! Save up to 10% on the Powersports Parts you Need! Headers, LS Engine Swap, Long Tube, Steel, Temporary Non-high Temperature Paint, 1 3/4 in. Header Tube Type: Dynatech 701-16512 Right Header, 1. 90 Day Limited Warranty. fs ub lp ck bt kj fl qj tq qr