Skip to content

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

$324.00
SKU RCG-400K

Notify me when back in stock

  • Fits Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Century, LeMans, Caballero, Bonneville
  • Fits Years: 78-83
  • Fits Transmissions: TH400, 2004R
  • If you are looking for improved performance check out our lighter weight, next generation of this crossmember, RCG-400KNG-BLK. What is a lightweight crossmember? Find out here.
  • 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 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
Jay Walls
TH-400 Crossmember w/frame extension

This is the second one of bought the first one was 20 years ago and still in my car. Got this one for my wagon build and was easy install just like 20 years ago. I have 2 other builds in the future and will be ordering them when the that time comes
Thanks

B
Bill Novis

Very well made. Fits perfect and good instructions.

Product Description

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

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
Jay Walls
TH-400 Crossmember w/frame extension

This is the second one of bought the first one was 20 years ago and still in my car. Got this one for my wagon build and was easy install just like 20 years ago. I have 2 other builds in the future and will be ordering them when the that time comes
Thanks

B
Bill Novis

Very well made. Fits perfect and good instructions.

    Product Tags:
  • 1978 Buick Century
  • 1978 Buick Regal
  • 1978 Chevrolet El Camino
  • 1978 Chevrolet Malibu
  • 1978 Chevrolet Monte Carlo
  • 1978 GMC Caballero
  • 1978 Oldsmobile Cutlass
  • 1978 Pontiac Bonneville
  • 1978 Pontiac Grand Prix
  • 1978 Pontiac LeMans
  • 1978-1983
  • 1979 Buick Century
  • 1979 Buick Regal
  • 1979 Chevrolet El Camino
  • 1979 Chevrolet Malibu
  • 1979 Chevrolet Monte Carlo
  • 1979 GMC Caballero
  • 1979 Oldsmobile Cutlass
  • 1979 Pontiac Bonneville
  • 1979 Pontiac Grand Prix
  • 1979 Pontiac LeMans
  • 1980 Buick Century
  • 1980 Buick Regal
  • 1980 Chevrolet El Camino
  • 1980 Chevrolet Malibu
  • 1980 Chevrolet Monte Carlo
  • 1980 GMC Caballero
  • 1980 Oldsmobile Cutlass
  • 1980 Pontiac Bonneville
  • 1980 Pontiac Grand Prix
  • 1980 Pontiac LeMans
  • 1981 Buick Century
  • 1981 Buick Regal
  • 1981 Chevrolet El Camino
  • 1981 Chevrolet Malibu
  • 1981 Chevrolet Monte Carlo
  • 1981 GMC Caballero
  • 1981 Oldsmobile Cutlass
  • 1981 Pontiac Bonneville
  • 1981 Pontiac Grand Prix
  • 1981 Pontiac LeMans
  • 1982 Buick Century
  • 1982 Buick Regal
  • 1982 Chevrolet El Camino
  • 1982 Chevrolet Malibu
  • 1982 Chevrolet Monte Carlo
  • 1982 GMC Caballero
  • 1982 Oldsmobile Cutlass
  • 1982 Pontiac Bonneville
  • 1982 Pontiac Grand Prix
  • 1982 Pontiac LeMans
  • 1983 Buick Century
  • 1983 Buick Regal
  • 1983 Chevrolet El Camino
  • 1983 Chevrolet Malibu
  • 1983 Chevrolet Monte Carlo
  • 1983 GMC Caballero
  • 1983 Oldsmobile Cutlass
  • 1983 Pontiac Bonneville
  • 1983 Pontiac Grand Prix
  • 1983 Pontiac LeMans
  • 2004r crossmember
  • 78 Buick Century
  • 78 Buick Regal
  • 78 Chevrolet El Camino
  • 78 Chevrolet Malibu
  • 78 Chevrolet Monte Carlo
  • 78 GMC Caballero
  • 78 Oldsmobile Cutlass
  • 78 Pontiac Bonneville
  • 78 Pontiac Grand Prix
  • 78 Pontiac LeMans
  • 79 Buick Century
  • 79 Buick Regal
  • 79 Chevrolet El Camino
  • 79 Chevrolet Malibu
  • 79 Chevrolet Monte Carlo
  • 79 GMC Caballero
  • 79 Oldsmobile Cutlass
  • 79 Pontiac Bonneville
  • 79 Pontiac Grand Prix
  • 79 Pontiac LeMans
  • 80 Buick Century
  • 80 Buick Regal
  • 80 Chevrolet El Camino
  • 80 Chevrolet Malibu
  • 80 Chevrolet Monte Carlo
  • 80 GMC Caballero
  • 80 Oldsmobile Cutlass
  • 80 Pontiac Bonneville
  • 80 Pontiac Grand Prix
  • 80 Pontiac LeMans
  • 81 Buick Century
  • 81 Buick Regal
  • 81 Chevrolet El Camino
  • 81 Chevrolet Malibu
  • 81 Chevrolet Monte Carlo
  • 81 GMC Caballero
  • 81 Oldsmobile Cutlass
  • 81 Pontiac Bonneville
  • 81 Pontiac Grand Prix
  • 81 Pontiac LeMans
  • 82 Buick Century
  • 82 Buick Regal
  • 82 Chevrolet El Camino
  • 82 Chevrolet Malibu
  • 82 Chevrolet Monte Carlo
  • 82 GMC Caballero
  • 82 Oldsmobile Cutlass
  • 82 Pontiac Bonneville
  • 82 Pontiac Grand Prix
  • 82 Pontiac LeMans
  • 83 Buick Century
  • 83 Buick Regal
  • 83 Chevrolet El Camino
  • 83 Chevrolet Malibu
  • 83 Chevrolet Monte Carlo
  • 83 GMC Caballero
  • 83 Oldsmobile Cutlass
  • 83 Pontiac Bonneville
  • 83 Pontiac Grand Prix
  • 83 Pontiac LeMans
  • all
  • Buick
  • chevrolet
  • chevy
  • cross memeber
  • crossmember
  • crossmemeber
  • g force
  • g force performance
  • G-Body
  • gbody
  • gforce
  • gforce performance
  • gmc
  • Make_Buick
  • Make_Chevrolet
  • Make_GMC
  • Make_Oldsmobile
  • Make_Pontiac
  • Model_Bonneville
  • Model_Caballero
  • model_century
  • Model_Cutlass
  • Model_El Camino
  • Model_Grand Prix
  • Model_LeMans
  • Model_Malibu
  • Model_Monte Carlo
  • Model_Regal
  • olds
  • Oldsmobile
  • Part Type_Crossmembers
  • Platform_G-body
  • Pontiac
  • rcg
  • RCG-400K
  • RCG400K
  • transmission crossmember
  • Transmission Group_GM-3
  • Transmission_2004R
  • Transmission_TH400
  • Year_1978
  • Year_1979
  • Year_1980
  • Year_1981
  • Year_1982
  • Year_1983