Product Description
- Fits Models: GM RWD G-Body; Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Century, LeMans, Caballero, Bonneville
- Fits Years: 84-88
- Fits Transmissions: 4L80, 4L85E
- We recommend a polyurethane transmission mount. The GMTM is sold separately.
- If you have a 78-83 vehicle G Force has developed a frame extension, GF-FE100 to duplicate the factory driver side longer frame rail. The frame extension is sold separately, or can be purchased in a kit, RCG-4L80K, which includes both the crossmember and the frame extension.
- The primary frame change on the 1978-1988 generation of GM G-Body vehicles begins with 1984 models and the implementation of the 2004R transmission which required positioning the crossmember further to the rear of the vehicle. This is evidenced by two sets of frame holes for the crossmember on the driver side of the vehicle.
- Note: Some 1983 Hurst Olds are known to have the 2004R transmission and thus the longer frame rail which does not require the GF-FE100 frame extension that is included in this Kit. Some 1984 El Caminos retained the early frames and do require an GF-FE100 frame extension to run this crossmember.
The G Force Patented Transmission Crossmember
Performance Engineered from Start to Finish
Performance
Engineered
Engineered and independently tested to withstand the rigors of the track, each crossmember exceeds the demands of even the most challenging roads.
Easy Installation.
It’s Foolproof!
Our unique bolt-to-frame design eliminates cutting and welding. The distinctive double-hump accommodates true dual exhaust. A G Force crossmember is guaranteed to be a perfect fit.
SHOPTALK
See the G Force Crossmember Overview for more info.
On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.
For all 78-88 G body crossmembers the passenger side hump is the taller of the two.
This generation of vehicle is prone to body bushing compression, even with some southern vehicles. If the floor pan is too close to allow installation, it may be necessary to replace the body bushings. Some customers have reported that with instances where there is slight interference they have been able to gently lift the floor pan with the assistance of a floor jack and a wood cushion to create enough clearance for installation.
This crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.See the G Force Crossmember Overview for more info.
This crossmember is installed with the G Force label facing the rear of the vehicle. However, another determining feature is the crossmember center tube which has a 1/2″ drain slot that is positioned on the bottom and on the passenger side next to the hump weldment.
This crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.
To use the provided 7/16″ hardware it is necessary to enlarge holes in your frame rails with a 1/2″ drill. If you choose to use the stock size 3/8″ hardware, it is strongly recommended to use new Grade #8 fasteners to compensate.
Discover more about the G Force Crossmember product line on these pages-
On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.
For all 78-88 G body crossmembers the passenger side hump is the taller of the two.
This generation of vehicle is prone to body bushing compression, even with some southern vehicles. If the floor pan is too close to allow installation, it may be necessary to replace the body bushings. Some customers have reported that with instances where there is slight interference they have been able to gently lift the floor pan with the assistance of a floor jack and a wood cushion to create enough clearance for installation.
This crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.See the G Force Crossmember Overview for more info.
This crossmember is installed with the G Force label facing the rear of the vehicle. However, another determining feature is the crossmember center tube which has a 1/2″ drain slot that is positioned on the bottom and on the passenger side next to the hump weldment.
This crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.
To use the provided 7/16″ hardware it is necessary to enlarge holes in your frame rails with a 1/2″ drill. If you choose to use the stock size 3/8″ hardware, it is strongly recommended to use new Grade #8 fasteners to compensate.
Discover more about the G Force Crossmember product line on these pages-
Years
1984 | 1985 | 1986 | 1987 | 1988
Models
| Buick: | Regal, Century |
| Chevrolet: | El Camino, Malibu, Monte Carlo |
| GMC: | Caballero |
| Oldsmobile: | Cutlass |
| Pontiac: | Grand Prix, LeMans, Bonneville |
Transmissions
4L80 | 4L85E
Specifications
Weight: 32 lbsShipping Dimensions: 51 × 11 × 6 In
Finish: Black Powder Coated
Mounting Hardware: Included
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Product Tags:
- 1984 Buick Century
- 1984 Buick Regal
- 1984 Chevrolet El Camino
- 1984 Chevrolet Malibu
- 1984 Chevrolet Monte Carlo
- 1984 GMC Caballero
- 1984 Oldsmobile Cutlass
- 1984 Pontiac Bonneville
- 1984 Pontiac Grand Prix
- 1984 Pontiac LeMans
- 1984-1988
- 1985 Buick Century
- 1985 Buick Regal
- 1985 Chevrolet El Camino
- 1985 Chevrolet Malibu
- 1985 Chevrolet Monte Carlo
- 1985 GMC Caballero
- 1985 Oldsmobile Cutlass
- 1985 Pontiac Bonneville
- 1985 Pontiac Grand Prix
- 1985 Pontiac LeMans
- 1986 Buick Century
- 1986 Buick Regal
- 1986 Chevrolet El Camino
- 1986 Chevrolet Malibu
- 1986 Chevrolet Monte Carlo
- 1986 GMC Caballero
- 1986 Oldsmobile Cutlass
- 1986 Pontiac Bonneville
- 1986 Pontiac Grand Prix
- 1986 Pontiac LeMans
- 1987 Buick Century
- 1987 Buick Regal
- 1987 Chevrolet El Camino
- 1987 Chevrolet Malibu
- 1987 Chevrolet Monte Carlo
- 1987 GMC Caballero
- 1987 Oldsmobile Cutlass
- 1987 Pontiac Bonneville
- 1987 Pontiac Grand Prix
- 1987 Pontiac LeMans
- 1988 Buick Century
- 1988 Buick Regal
- 1988 Chevrolet El Camino
- 1988 Chevrolet Malibu
- 1988 Chevrolet Monte Carlo
- 1988 GMC Caballero
- 1988 Oldsmobile Cutlass
- 1988 Pontiac Bonneville
- 1988 Pontiac Grand Prix
- 1988 Pontiac LeMans
- 4l80e in g body
- 84 Buick Century
- 84 Buick Regal
- 84 Chevrolet El Camino
- 84 Chevrolet Malibu
- 84 Chevrolet Monte Carlo
- 84 GMC Caballero
- 84 Oldsmobile Cutlass
- 84 Pontiac Bonneville
- 84 Pontiac Grand Prix
- 84 Pontiac LeMans
- 85 Buick Century
- 85 Buick Regal
- 85 Chevrolet El Camino
- 85 Chevrolet Malibu
- 85 Chevrolet Monte Carlo
- 85 GMC Caballero
- 85 Oldsmobile Cutlass
- 85 Pontiac Bonneville
- 85 Pontiac Grand Prix
- 85 Pontiac LeMans
- 86 Buick Century
- 86 Buick Regal
- 86 Chevrolet El Camino
- 86 Chevrolet Malibu
- 86 Chevrolet Monte Carlo
- 86 GMC Caballero
- 86 Oldsmobile Cutlass
- 86 Pontiac Bonneville
- 86 Pontiac Grand Prix
- 86 Pontiac LeMans
- 87 Buick Century
- 87 Buick Regal
- 87 Chevrolet El Camino
- 87 Chevrolet Malibu
- 87 Chevrolet Monte Carlo
- 87 GMC Caballero
- 87 Oldsmobile Cutlass
- 87 Pontiac Bonneville
- 87 Pontiac Grand Prix
- 87 Pontiac LeMans
- 88 Buick Century
- 88 Buick Regal
- 88 Chevrolet El Camino
- 88 Chevrolet Malibu
- 88 Chevrolet Monte Carlo
- 88 GMC Caballero
- 88 Oldsmobile Cutlass
- 88 Pontiac Bonneville
- 88 Pontiac Grand Prix
- 88 Pontiac LeMans
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