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Transmission Crossmember; LS into 78-88 GM A & G-Body Cars - Trans-Dapt Performance - 6422
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.
Resources
Installation InstructionsSpecifications:
| Bolts/Studs Included | Yes |
| Bracket Finish | Black Paint |
| Bushing Color | Black |
| Bushing Material | Rubber |
| California Proposition 65 | WARNING: Cancer. For more info visit www.P65Warnings.ca.gov |
| Contents | Crossmember, Transmisson pad, transmission adapter brackets, mounting hardware |
| Dampening Type | Pad |
| Description_ASM | 1978-1981 Buick Century 4.8 Liter RWD, 1978-1981 Buick Century 5.3 Liter RWD, 1978-1981 Buick Century 6.0 Liter RWD, 1978-1987 Buick Regal 4.8 Liter RWD, 1978-1987 Buick Regal 5.3 Liter RWD, 1978-1987 Buick Regal 6.0 Liter RWD, 1978-1987 Chevrolet El Camino 4.8 Liter RWD, 1978-1987 Chevrolet El Camino 5.3 Liter RWD, 1978-1987 Chevrolet El Camino 6.0 Liter RWD, 1978-1983 Chevrolet Malibu 4.8 Liter RWD, 1978-1983 Chevrolet Malibu 5.3 Liter RWD, 1978-1983 Chevrolet Malibu 6.0 Liter RWD, 1978-1988 Chevrolet Monte Carlo 4.8 Liter RWD, 1978-1988 Chevrolet Monte Carlo 5.3 Liter RWD, 1978-1988 Chevrolet Monte Carlo 6.0 Liter RWD, 1978-1987 GMC Caballero 4.8 Liter RWD, 1978-1987 GMC Caballero 5.3 Liter RWD, 1978-1987 GMC Caballero 6.0 Liter RWD, 1978-1981 Oldsmobile Cutlass 4.8 Liter RWD, 1978-1981 Oldsmobile Cutlass 5.3 Liter RWD, 1978-1981 Oldsmobile Cutlass 6.0 Liter RWD, 1978-1987 Oldsmobile Cutlass Supreme 4.8 Liter RWD, 1978-1987 Oldsmobile Cutlass Supreme 5.3 Liter RWD, 1978-1987 Oldsmobile Cutlass Supreme 6.0 Liter RWD, 1982-1986 Pontiac Bonneville 4.8 Liter RWD, 1982-1986 Pontiac Bonneville 5.3 Liter RWD, 1982-1986 Pontiac Bonneville 6.0 Liter RWD, 1981-1987 Pontiac Grand Prix 4.8 Liter RWD, 1981-1987 Pontiac Grand Prix 5.3 Liter RWD, 1981-1987 Pontiac Grand Prix 6.0 Liter RWD |
| Description_DEF | Automatic Transmission Mount Kit |
| Description_DES | Transmission Crossmember; LS into 78-88 GM A & G-Body Cars |
| Description_EXT | LS Engine Swap Transmission Crossmember; LS into 78-81 GM A-Body & 1982-88 G-Body Cars (equipped with a driver [left] side, 200R4 framerail extension) |
| Description_INV | TRANS-DAPT TRANSMISSION CROSSMEMBER |
| Description_MKT |
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. |
| Description_SHO | TRANSMISSION MOUNT |
| Drop Distance | No Drop |
| Engine | Chevy LS Series |
| Fastener(s) Included | Yes |
| Finish | Temporary Black Shipping Paint. This coating is not intended To Be Final Finish. |
| Finish Type | Temporary Black Shipping Paint |
| Installation Hardware Included | Yes |
| Installation Notes | Cars without 200R4 framerail extension require Trans-Dapt 6423. Sold separately! |
| Kit Type | with RUBBER Pads |
| Level1 | Level 1: Transmission |
| Level2 | Level 2: Service Kits |
| Material | Rubber/Steel |
| Materials | 0.114 in. mild steel tubing |
| Mount Material | Rubber |
| Mounting Bracket Included | Yes |
| Mounting Hardware Included | Yes |
| Mounting Type | Bolt-On Design |
| Package Contents | Crossmember, Transmisson pad, transmission adapter brackets, mounting hardware |
| Product Type | Transmission Mounts |
| Replacement Mount Pads | 9442 |
| Transmission Compatibility | 4L60E |
| Transmission Compatibility | 4L65E |
| Transmission Compatibility | 4L70E |
| Transmission Compatibility | 4L80E |
| Transmission Compatibility | T-56 |
| Transmission Compatibility | TH400 |
| Transmission Mount Type | Crossmember |
| Transmission Type | T56, TH400, 4L60E, 4L80E |
| Welding Required | No |
Special Order Policy & Cancellations
Special order parts are defined by Grudge Motorsports, LLC as any product, auto part, performance part, tool, accessory, etc., that we do not currently have in stock, that are on backorder, or that we do not stock as a shelf item which may be due to lack of popularity or the part has various options that make each order unique. This does not mean the part is not currently available. Many manufactures keep less popular parts they produce in stock and can process orders we submit quickly. If the manufacturer has the item in stock it will normally drop ship directly to you within 5-7 business days depending on your location and the type of shipping required. Otherwise the factory may have to produce or final finish a part which typically ships in 3-6 weeks but can take up to 12 weeks or more for certain parts.
There is NO guaranteed delivery date for any special order and manufacturers often change the expected ship date several times. Contact us before making a purchase if you want to get more info on an estimated ship date which will help avoid cancellation issues.
ALL SALES ON SPECIAL ORDERS ARE FINAL. NO CANCELLATIONS, REFUNDS, OR RETURNS WITH EXCEPTION TO DAMAGED UPON RECEIPT OR RECEIVED A PRODUCT DIFFERENT THAN PRODUCT ORDERED. THE ORIGINAL MERCHANT TRANSACTION FEE (3-7% depending on your payment method) IS NON-REFUNDABLE AND WILL BE DEDUCTED FROM ALL RETURNED ORDERS.
Special orders are sent directly to the manufacturer and usually drop ships directly from them in many cases but occasionally ships to one of our distribution centers and then shipped to the shipping address provided at purchase. In these cases we work extra hard to expedite getting the order shipped quickly.
Updates on special orders are available upon request only and we do not provide phone support for special order status updates. If you need help with an order start by selecting the Orders link on our site or the Order Support button in the email received a time of purchase and submit the appropriate form. We will NOT respond to random emails or phone calls requesting status, returns, or cancellation.
Customer Order Support
Use these quick links if you need to review the Terms & Conditions, Return Policy, or Special Order Policy agreed to at time of purchase.
Select the appropriate buttons below to view your account, check the status of your order, start the return process if you received a damaged or incorrect part, or even request to cancel a special order you placed. Just click the button below.
