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1978-1983 G-Body Crossmember -TH400 with frame extension | RCG-400K

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$299.00
SKU RCG-400K

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  • Fits Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Hurst
  • Fits Years: 78-83
  • Fits Transmissions: TH400, 2004R
  • If you are looking for improved performance check out our next generation of lighter weight crossmembers, RCG-400KNG-BLK.
  • We recommend a polyurethane transmission mount. The G Force GMTM is sold separately.
  • The primary frame change on this generation of 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.
  • G force has developed a frame extension, FE-100, to duplicate this longer frame on the early generation vehicles. The RCG-400K is pre-packaged with the frame extension.
  • Note: Some 1983 Hurst Olds are known to have the 2004R transmission and thus the longer frame rail which do not require the FE-100 frame extension included in this Kit.

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
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B
Bill Novis

Very well made. Fits perfect and good instructions.

Product Description

  • Fits Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Hurst
  • Fits Years: 78-83
  • Fits Transmissions: TH400, 2004R
  • If you are looking for improved performance check out our next generation of lighter weight crossmembers, RCG-400KNG-BLK.
  • We recommend a polyurethane transmission mount. The G Force GMTM is sold separately.
  • The primary frame change on this generation of 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.
  • G force has developed a frame extension, FE-100, to duplicate this longer frame on the early generation vehicles. The RCG-400K is pre-packaged with the frame extension.
  • Note: Some 1983 Hurst Olds are known to have the 2004R transmission and thus the longer frame rail which do not require the FE-100 frame extension included in this Kit.

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, our crossmembers exceed 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. Our crossmembers are guaranteed to be a perfect fit.

SHOPTALK

See the G Force Crossmember Overview for more info.

This crossmember has been redesigned to accept the double slot bolt pattern of standard transmission mounts.

On all 78-88 G-Body crossmembers, the passenger side hump is the taller of the two.

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.

Years

1978 | 1979 | 1980 | 1981 | 1982 | 1983

Models

Buick: Regal
Chevrolet: El Camino, Malibu, Monte Carlo
Oldsmobile: Cutlass, Hurst
Pontiac: Grand Prix

Transmissions

TH400 | 2004R

Specifications

Weight: 37 lbs

Shipping Dimensions: 51 × 11 × 6 In

Finish: Black Powder Coated

Mounting Hardware: Included

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
B
Bill Novis

Very well made. Fits perfect and good instructions.