Best Header Clearance Crossmembers

1. Hooker Headers 12644HKR-1: G-Body Ls Swap Transmission Crossmember, Black

The Hooker Headers 12644HKR-1 is a G-Body LS swap transmission crossmember designed for 78-88 GM A/G Body cars. It’s built to handle 4L60/4L65/4L70/4L80/TH400/2004R/T56 transmissions. This part ensures a perfect fit for your LS engine swap.

It features welded steel construction for strength and durability. The design uses CAD modeling and FEA analysis for optimal performance. It’s updated from the older 12644HKR part for better results.

This crossmember provides the right engine/transmission angle, which is critical for U-joint working angles. Use it with Hooker 12643HKR engine mounts for the best setup. It’s a reliable choice for your LS swap project.

2. Hooker Blackheart BHS549 4L80E Transmission Swap Crossmember

The Hooker Blackheart BHS549 is a 4L80E transmission swap crossmember designed for classic trucks. It fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD, and 1973-1982 Blazer/Jimmy 2WD.

This crossmember works with LS/Gen-V LT swaps and pairs with BHS540 engine mounting brackets. It’s made of welded steel with a black powder-coated finish for strength and style.

Easy installation, optimal strength, and high exhaust clearance make this part a top choice for your swap project.

3. Hooker Headers BHS545: 1987-96 Dodge Dakota Transmission Crossmember

The Hooker Headers BHS545 is a transmission crossmember made for 1987-96 Dodge Dakota trucks. It comes with everything you need for a smooth install. This part is built to last and fits perfectly.

It has a black coating that stops rust and adds strength. This protective layer keeps it looking good and working well for years.

The kit includes all parts like brackets and fasteners. No guessing or extra trips to the store—just bolt it on and go.

4. Doug’s Transmission Crossmember 70-81 GM F Body 4.8-6.2L LS Engine Swap Mild Steel, Black SKC104

Doug’s Transmission Crossmember SKC104 gives your GM F-Body a strong and simple fit. It works clean and smooth with your LS engine swap.

This crossmember is made from mild steel for solid support. It fits 1970–1981 GM F-Body cars with ease.

It installs fast. It stays firm. It keeps your swap simple.

5. Hooker Headers BHS507: 99-04 Mustang Transmission Crossmember

Hooker Headers BHS507 is a strong crossmember for 99-04 Mustang builds. It uses fabricated steel for solid support. It looks clean with a black powder coat.

The bolt-in design makes it easy to fit. Hardware is included for a fast start.

It helps with TKO 500/600, TR-3550, Powerglide, TH350, 4L60E, and 4L70E swaps. It is a smart choice for Coyote and LS swaps.

6. Hooker Headers BHS550: T56 Transmission Crossmember Kit

Hooker Headers BHS550 is a T56 transmission crossmember kit for many classic GM trucks and SUVs. It fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD, and 1973-1982 Blazer/Jimmy 2WD.

It is made for 1973-1987 C10 LS/Gen-V LT swap parts. It also works with BHS540 engine mounting brackets and 12621HKR.

This kit uses CAD modeling and FEA analysis for a smart fit. It aims for strength, light weight, safety, and a clean look.

7. Hooker Headers BHS548: 4L60E Transmission Crossmember Kit

Hooker Headers BHS548 is a 4L60E transmission crossmember kit made for 1973-1987 C10/C15 2WD, 1979-1987 C20 2WD, and 1973-1982 Blazer/Jimmy 2WD. It gives your swap a clean fit and a strong hold.

It works with 1973-1987 C10 LS/Gen-V LT swap parts. Use it with BHS540 engine mount brackets. It also works with 12621HKR.

This kit is built with CAD modeling and FEA analysis. That helps give good strength, low weight, and safe support.

8. Hooker Headers BHS542: 1997-04 Dodge Dakota 2Wd Transmission Crossmember

Upgrade your 1997-2004 Dodge Dakota 2WD with the Hooker Headers BHS542. This transmission crossmember lets you install a Gen III Hemi engine easily. It’s designed for a perfect fit without hassle.

Works with 2003 & up 5.7L, 6.1L, 6.2L, or 6.4L engines. Use it with 8HP70, 8HP90, or other transmissions (adapter bracket sold separately). The black coating adds durability and corrosion resistance.

No firewall or brake booster modifications needed. Provides clearance for Hellcat superchargers and factory brake boosters. Eliminates guesswork for a smooth engine swap.

9. Hooker Transmission Crossmember Adapter, Blackheart, Bolt-On, Steel, Black Powder Coat, Mopar Gen III Hemi, 8HP70, Each

The Hooker Transmission Crossmember Adapter is a bolt-on solution for Mopar Gen III Hemi engines. It works with the Blackheart Transmission Crossmember for a seamless fit.

This adapter makes Gen III Hemi swaps into 66-70 B-Body Mopars easy and trouble-free. It fits the 8HP70 transmission and sets the driveline angle correctly. Use it with BHS531 engine brackets for proper U-joint operation.

Made from heavy-duty steel, it’s black powder-coated for durability and style. It handles up to 3” exhaust and includes mounting bolts. Works with Hooker transmission mounts (sold separately).

10. Trans-Dapt 42011 Engine Conversion Kit, Crossmember/Gaskets/Hardware/Headers/Mounts/Oil Pan/Pickup Tube, Compatible with GM LS-Series/GM F-Body 1967-69 / GM X-Body 1968-74, Kit

The Trans-Dapt 42011 Engine Conversion Kit is a complete solution for upgrading your classic car. It includes everything you need: crossmember, gaskets, hardware, headers, mounts, oil pan, and pickup tube. This kit is compatible with GM LS-Series engines and fits GM F-Body 1967-69 and GM X-Body 1968-74 vehicles.

Made in the United States, this kit weighs 61 pounds and comes in a 26.5″ x 21.25″ x 14.5″ package. The part number is 42011, making it easy to identify and order.