Transmission-Crossmember;-Ls-Into-78-88-Gm-A--G-Body-Cars
Transmission-Crossmember;-Ls-Into-78-88-Gm-A--G-Body-Cars
Transmission-Crossmember;-Ls-Into-78-88-Gm-A--G-Body-Cars
Transmission-Crossmember;-Ls-Into-78-88-Gm-A--G-Body-Cars
Transmission-Crossmember;-Ls-Into-78-88-Gm-A--G-Body-Cars
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Trans-Dapt 6422 Transmission Crossmember; LS into 78-88 GM A & G-Body Cars

SKU: ds_FBLH_6422
Product Type: Automatic Transmission Mount Kit
2 sold in last 8 days
$452.99
Inventory:
$452.99
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Trans-Dapt Performance Products has been manufacturing products to assist gearheads install an LS engine into a wide variety of classic GM cars and trucks since 2001, when they released universal-use engine adapter plates. Since this early start in the LS engine swap market, Trans-Dapt has dramatically expanded its LS engine swap product line to include precise fitting, application specific engine and transmission mounting components.

This steel transmission crossmember kit has a 3-piece design, with a center segment that can be unbolted for quicker removal of the transmission. The crossmember is made in the USA, and is configured to aid in the installation of a T56, TH400, 4L60, 65, 70 or 4L80E transmission with an LS engine in 1978-81 GM A-Body, or 1982-88 GM G-Body cars that have the driver side frame rail extension for THM200-R4 transmissions. **For vehicles that DO NOT have the factory THM200R4 extensions, the use of Trans-Dapt # 6423 frame rail adapter is required (sold separately).

Unlike many of the kits on market that require you purchase separate adapters to accommodate the different transmission types, this kit includes adapters for any of the transmissions it is designed to fit. While this crossmember may work "ok" with other manufacturer's engine mounts, we recommend this crossmember be used with Trans-Dapt's LS into A/G-Body engine mounts, and Hedman Hedders' 1978-88 GM A/G-Body LS Engine Swap Headers.

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Trans-Dapt 6422 Transmission Crossmember; LS into 78-88 GM A & G-Body Cars

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Do you offer wholesale or jobber pricing?

Yes. Wholesale pricing is available for legitimate businesses that provide a valid business number or equivalent proof. Ongoing purchase volume is required to maintain discount eligibility. One-time personal buyers aren’t eligible.

Will this part fit my vehicle?

If a product page clearly lists fitment for your vehicle and the description leaves no reasonable doubt, we’ll cover the cost of return if it doesn’t fit. Exclusions apply if prior modifications cause the issue. When browsing self-serve, you’re responsible for confirming compatibility by checking manufacturer fitment data and notes. If unsure, contact us before ordering and we’ll verify it for you.

Do you offer technical support or installation advice?

We help where possible on a case-by-case basis. Most manufacturers include detailed instructions and tech support contacts. Because our catalog spans hundreds of brands, we can’t provide every torque spec or procedure, but we’ll connect you with the manufacturer if needed.

Do you offer price matching?

We don’t guarantee price matching, but we’re happy to review a legitimate in-stock offer from another Canadian retailer. The comparison must include all costs such as product price, shipping, taxes, and fees, and the item must be identical and available for immediate purchase. We won’t lose money to match unsustainable or out-of-stock pricing.

Can I exchange an item?

Yes. In-store exchanges happen on the spot when stock is available. For shipped orders, the original item must be returned first. Once received and inspected, we can issue a store credit toward the correct part or replacement. We can’t send a second item while the first is still in your possession without payment for both.

Are prices shown before or after tax?

All prices on the site are before tax. GST, HST, or PST is calculated at checkout based on your shipping address..

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