G Force RCG-400K Transmission Crossmember, 1978-1983 G-Body, GM-3
G Force RCG-400K Transmission Crossmember, 1978-1983 G-Body, GM-3
G Force Crossmembers

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#64078833

G Force RCG-400K Transmission Crossmember, 1978-1983 G-Body, GM-3

  • Overall length measures a total of 51"
  • Kit includes the required frame extension
  • Made entirely of steel with a powder coated finish
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$380.00

/each

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Product Summary

2004R, TH400, Steel, Powder Coated

  • Overall length measures a total of 51"
  • Kit includes the required frame extension
  • Made entirely of steel with a powder coated finish
  • Will work with the GM-3 Transmission Group (see list)
  • Specially designed to fit the 1978-1983 G-Body vehicles
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Key Specs

MFG. Part #RCG-400K
BrandG Force Crossmembers
Material TypeSteel
FinishPowder Coated
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G Force Crossmembers RCG-400K Details

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 slight interference instances, they have been able to gently lift the floor pan with the assist of a floor jack and a wood cushion, thus providing the required clearance for installation. On all 78-88 G body crossmembers, the passenger side hump is the taller of the two, and on some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.

1984 models and the implementation of the 2004R transmission required positioning the crossmember further to the rear of the vehicle. This is evidenced by 2 sets of frame holes for the crossmember on the driver side of the vehicle. G force has developed the frame extension (p/n FE1-00) to duplicate this longer frame on the early generation vehicles. RCG-400k is pre-packaged with the frame extension.

Note: while this change was platform wide beginning in 1984, some 1983 Hurst Olds are known to have the 2004R transmission and thus the longer frame rail.

  • Fits 1978-1983 G-Body
  • Includes frame extension

Application

Since different transmissions can share the same overall lengths as well as other measurements, they can also share some transmission crossmembers. G-Force has grouped the transmissions together that can share the same crossmember.

This Crossmember fits the GM-3 Transmission Group:

  • Turbo Hydra-Matic 2004R (TH2004R)
  • Turbo Hydra-Matic 400 (TH400)
  • Turbo Hydra-Matic 375 (TH375)

Charts

G Force Crossmembers RCG-400K Specifications

KEY SPECS
MFG. Part #RCG-400K
BrandG Force Crossmembers
Material TypeSteel
FinishPowder Coated
GENERAL
Sold in QuantityEach
NotesPlease note that G-Force crossmembers do not include the G-Force logo sticker as shown in the picture. This decal is shown for brand reference only.

Ratings & Reviews

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Built to last

5.0

2 years ago

Fernie

Murrieta, CA

I did an engine swap on my 82 Buick Regal. We swapped it to a 383 stroker and TH400 and this crossmember has been great

Would Recommend

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Fitment

  • 3.2 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 3.2 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 200

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 200

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 200

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 200

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 200

  • 2-Piece Rear Main Chevy 200

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

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