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

G Force RCG-400K Transmission Crossmember, 1978-1983 G-Body, GM-3
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Price: 365.00 USD

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

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

This Part Fits

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)

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …

About this product

Product Identifiers

Brand
G-Force
Manufacturer Part Number
RCG-400K
eBay Product ID (ePID)
251988497

Additional Product Features

Notes
Description–Superduty Steel Powdercoated Double-Hump Crossmember for Dual Exhaust
Part Type
Frame
Sub Type
Transmission Crossmember

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G Force RCG-4L80K Transmission Crossmember,1978-1983 G-Body, GM-4

G Force RCG-4L80K Transmission Crossmember,1978-1983 G-Body, GM-4
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Price: 420.00 USD

G Force RCG-4L80K Transmission Crossmember,1978-1983 G-Body, GM-4

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

This Part Fits

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-4 Transmission Group:

  • Hydra-Matic 4L80 transmission
  • Hydra-Matic 4L80-E transmission
  • Hydra-Matic 4L85 transmission
  • Hydra-Matic 4L85-E transmission

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …

About this product

Product Identifiers

Brand
G-Force
Manufacturer Part Number
RCG-4L80K
eBay Product ID (ePID)
251926840

Additional Product Features

Notes
Description–Superduty Steel Powdercoated Double-Hump Crossmember for Dual Exhaust
Part Type
Frame
Sub Type
Transmission Crossmember

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G Force Crossmembers RCG-400 Crossmember For 1984-1988 G body TH400/200R4 NEW

G Force Crossmembers RCG-400 Crossmember For 1984-1988 G body TH400/200R4 NEW
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Price: 329.26 USD

G Force Crossmembers RCG-400 Crossmember For 1984-1988 G body TH400/200R4 NEW

Fitment and Product Information:

1984-1988 G body crossmember TH400/200R4

Brandname: G Force Crossmembers

Part Number: RCG-400

Product Details:

    Fits the following transmissions: TH400, 2004R. Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately. P/N GMTM.

    NOTE: Please see product specifications and view our G-Body Video in the tech tips section PRIOR to ordering your crossmember to ensure correct part selection.

    P/N RCG-400 installation notes:

    • 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.
    • 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.
    • The crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.
    • The RCG-400 is bolted to the rear set of frame holes on the driver’s side frame rail.
    •  1984 1985 1986 1987 1988 Monte Carlo Cutlass Malibu El Camino Regal GS Grand Prix TH400 2004R 200R4

    Additional information:

    • Fits Models:Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal, Century, LeMans, Caballero, Bonneville 
    • Fits Years: 84-88
    • Fits Transmissions: TH400, 2004

















The Wundercarparts 90 Day Warranty:

Wundercarparts offers a 90 day warranty against manufacturer defects on all items we sell! Additionally, most new items come with a seperate manufacturer warranty. Please message us through eBay for further information on manufacturer warranty, or to start a warranty claim.

Prop 65 Warning WARNING: This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Interchange Part Number
GFC_RCG-400
UPC
Does Not Apply
Manufacturer Part Number
RCG-400
Brand
G Force Crossmembers
Manufacturer Warranty
Unspecified Length

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G Force RCG-6L80 Transmission Crossmember, 84-88 G-Body, GM-6

G Force RCG-6L80 Transmission Crossmember, 84-88 G-Body, GM-6
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Price: 410.00 USD

G Force RCG-6L80 Transmission Crossmember, 84-88 G-Body, GM-6

G Force RCG-6L80 Transmission Crossmember, 84-88 G-Body, GM-6 G Force Crossmembers

G Force RCG-6L80 Transmission Crossmember, 84-88 G-Body, GM-6

Sku # 64084886

Mfr. Part # RCG-6L80

Brand

G Force Crossmembers

Details

Info

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.

  • Fits 1984-1988 G-Body
  • Crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom
  • On all 84-88 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.
  • 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.
  • The crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.
  • The primary frame change on this generation of vehicles is beginning 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 2 sets of frame holes for the crossmember on the driver side of the vehicle. G force has developed the frame extension (FE-100) to duplicate this longer frame on the early generation vehicles.

Application

This Part Fits

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-6 Transmission Group:

  • Hydra-Matic 6L80 transmission (6L80E) – Slip Yoke
  • Hydra-Matic 6L90 transmission (6L90E) – Slip Yoke

Charts

(PDF)

Specs

Finish

Black powdercoated

Transmission Mount Included

No

Notes

Please 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.

Tech Support

We’re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.

About

Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Brand
G Force Crossmembers
Manufacturer Part Number
RCG-6L80

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G Force Crossmembers RCG-350 Crossmember For 1978-1988 TH350 G body NEW

G Force Crossmembers RCG-350 Crossmember For 1978-1988 TH350 G body NEW
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Price: 312.94 USD

G Force Crossmembers RCG-350 Crossmember For 1978-1988 TH350 G body NEW

Fitment and Product Information:

1978-1988 TH350 G body crossmember

Brandname: G Force Crossmembers

Part Number: RCG-350

Product Details:

    Fits the following transmissions: TH350, Muncie, Powerglide, T-10, super T-10, Saginaw, TH200. Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately. p/n GMTM.

    p/n RCG-350 installation notes:

    • 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.
    • 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.
    • the crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.

    78 79 80 81 82 83 84 85 86 87 88 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 Monte Carlo Cutlass Malibu EL Camino Regal GS Grand Prix TH350 Muncie Powerglide Saginaw T10 super T-10 TH200 th250 200 250 350

    Additional information:

    Weight 30 lbs
    Dimensions 6 × 11 × 51 in
    Product Years

    1978-1988

    Product Years Abbreviated

    78-88

    Product Years Individual

    1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988

    Buick Models

    Regal

    Chevrolet Models

    El Camino, Malibu, Monte Carlo

    Oldsmobile Models

    Cutlass

    Pontiac Models

    Grand Prix

The Wundercarparts 90 Day Warranty:

Wundercarparts offers a 90 day warranty against manufacturer defects on all items we sell! Additionally, most new items come with a seperate manufacturer warranty. Please message us through eBay for further information on manufacturer warranty, or to start a warranty claim.

Prop 65 Warning WARNING: This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Interchange Part Number
GFC_RCG-350
UPC
Does Not Apply
Manufacturer Part Number
RCG-350
Brand
G Force Crossmembers
Manufacturer Warranty
Unspecified Length

Posted on Leave a comment

G Force RCG-T56 Transmission Crossmember, 1984-1988 G-Body, GM-5

G Force RCG-T56 Transmission Crossmember, 1984-1988 G-Body, GM-5
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Price: 360.00 USD

G Force RCG-T56 Transmission Crossmember, 1984-1988 G-Body, GM-5

G Force RCG-T56 Transmission Crossmember, 1984-1988 G-Body, GM-5 G Force Crossmembers

G Force RCG-T56 Transmission Crossmember, 1984-1988 G-Body, GM-5

Sku # 64084885

Mfr. Part # RCS10B-700

Brand

G Force Crossmembers

Details

Info

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.

  • Fits 1984-1988 G-Body
  • Black powder coat finish

Application

This Part Fits

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-5 Transmission Group:

  • Borg-Warner T-56 transmission
  • Tremec T-56 transmission
  • Tremec Magnum 11009 6-spd
  • Tremec Magnum 11010 6-spd
  • Tremec Magnum 11011 6-spd
  • Tremec Magnum 11012 6-spd
  • Tremec Magnum XL #12019 6-spd
  • Tremec Magnum XL #12021 6-spd

Specs

Notes

Please 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.

Tech Support

We’re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.

About

Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Brand
G-Force
Manufacturer Part Number
RCS10B-700

About this product

Product Identifiers

Brand
G-Force
Manufacturer Part Number
RCS10B-700
eBay Product ID (ePID)
251988417

Additional Product Features

Notes
Description–Transmission Crossmember
Part Type
Frame
Sub Type
Transmission Crossmember

Posted on Leave a comment

G Force Crossmembers RCG-700 Crossmember-700 R4 Trans Group For 1978-1988 G-body

G Force Crossmembers RCG-700 Crossmember-700 R4 Trans Group For 1978-1988 G-body
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Price: 322.97 USD

G Force Crossmembers RCG-700 Crossmember-700 R4 Trans Group For 1978-1988 G-body

Fitment and Product Information:

1978-1988 G-body crossmember-700 R4 Trans Group GM-2

Brandname: G Force Crossmembers

Part Number: RCG-700

Product Details:

    Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately.


    Installation notes:

    • 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.
    • 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.
    • the crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.
    • in some cases an rcg-700 installed with a t5 may require a custom transmission mount to maintain proper drive line angle.

    78 79 80 81 82 83 84 85 86 87 88 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 Monte Carlo Cutlass Malibu EL Camino Regal GS Grand Prix 700R4 7004r 4L60 4L60E TREMEC TKO TKO500 TKO600 500 600

    Specs:

    Weight 31 lbs
    Dimensions 6 × 11 × 51 in
    Product Years

    1978-1988

    Chevrolet Models

    El Camino, Malibu, Monte Carlo

    Product Years Abbreviated

    78-88

    Product Years Individual

    1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988

    Pontiac Models

    Grand Prix

    Buick Models

    Regal

The Wundercarparts 90 Day Warranty:

Wundercarparts offers a 90 day warranty against manufacturer defects on all items we sell! Additionally, most new items come with a seperate manufacturer warranty. Please message us through eBay for further information on manufacturer warranty, or to start a warranty claim.

Prop 65 Warning WARNING: This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Interchange Part Number
GFC_RCG-700
Manufacturer Part Number
RCG-700
UPC
Does Not Apply
Brand
G Force Crossmembers
Manufacturer Warranty
Unspecified Length

Posted on Leave a comment

G Force RCG-400 Transmission Crossmember, 1984-1988 G-Body, GM-3

G Force RCG-400 Transmission Crossmember, 1984-1988 G-Body, GM-3
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Price: 305.00 USD

G Force RCG-400 Transmission Crossmember, 1984-1988 G-Body, GM-3

G Force RCG-400 Transmission Crossmember, 1984-1988 G-Body, GM-3 G Force Crossmembers

G Force RCG-400 Transmission Crossmember, 1984-1988 G-Body, GM-3

Sku # 64084883

Mfr. Part # RCG-400

Brand

G Force Crossmembers

Details

Info

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.

  • Fits 1984-1988 G-Body
  • Bolts to the rear set of frame holes on drivers side frame rail

Application

This Part Fits

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

(PDF)

Specs

Notes

Please 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.

Reviews

Great product!!!!! Great fit!!!!!

Rated

Product Rating

by Miked821 on October 27, 2020

Summary: Fit great. Easy bolt in installation.

Yes, I recommend this product.

Fit great!

Rated

Product Rating

by STV442 on February 02, 2020

Summary: Fit great – a bit of loose weld slag trapped in the tubing but don’t think it will hurt anything. Just can hear it rattling around a bit

Yes, I recommend this product.

Tech Support

We’re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.

About

Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Brand
G Force Crossmembers
Manufacturer Part Number
RCG-400

Posted on Leave a comment

G Force RCG-4L80 Transmission Crossmember, 1984-1988 G-Body, GM-4

G Force RCG-4L80 Transmission Crossmember, 1984-1988 G-Body, GM-4
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Price: 360.00 USD

G Force RCG-4L80 Transmission Crossmember, 1984-1988 G-Body, GM-4

G Force RCG-4L80 Transmission Crossmember, 1984-1988 G-Body, GM-4 G Force Crossmembers

G Force RCG-4L80 Transmission Crossmember, 1984-1988 G-Body, GM-4

Sku # 64084884

Mfr. Part # RCG-4L80

Brand

G Force Crossmembers

Details

Info

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.

  • Fits 1984-1988 G-Body
  • Crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom

Application

This Part Fits

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-4 Transmission Group:

  • Hydra-Matic 4L80 transmission
  • Hydra-Matic 4L80-E transmission
  • Hydra-Matic 4L85 transmission
  • Hydra-Matic 4L85-E transmission

Charts

(PDF)

Specs

Notes

Please 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.

Reviews

Nice piece.. well built. Dont buy the cheaper ones

Rated

Product Rating

by Monster on April 15, 2021

Summary: Fit right in… 83 and prior remember to buy the extention.

Yes, I recommend this product.

Tech Support

We’re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help.

About

Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Brand
G-Force
Manufacturer Part Number
RCG-4L80K

About this product

Product Identifiers

Brand
G-Force
Manufacturer Part Number
RCG-4L80K
eBay Product ID (ePID)
251926840

Additional Product Features

Notes
Description–Superduty Steel Powdercoated Double-Hump Crossmember for Dual Exhaust
Part Type
Frame
Sub Type
Transmission Crossmember

Posted on Leave a comment

G Force RCG-350 Transmission Crossmember, 1978-1988 G-Body, GM-1

G Force RCG-350 Transmission Crossmember, 1978-1988 G-Body, GM-1
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Price: 305.00 USD

G Force RCG-350 Transmission Crossmember, 1978-1988 G-Body, GM-1

G Force RCG-350 Transmission Crossmember, 1978-1988 G-Body, GM-1 G Force Crossmembers

G Force RCG-350 Transmission Crossmember, 1978-1988 G-Body, GM-1

Sku # 64078831

Mfr. Part # RCG-350

Brand

G Force Crossmembers

Details

Info

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.

  • Fits 1978-1983 G-Body
  • Crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom

Application

This Part Fits

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-1 Transmission Group:

  • Turbo Hydra-Matic 350 (TH350)
  • Turbo Hydra-Matic 200 (TH200)
  • Turbo Hydra-Matic 250 (TH250)
  • Muncie transmission
  • Muncie M-21 transmission
  • Muncie M-20 transmission
  • Muncie M-22 transmission
  • Borg-Warner T-10 (AS-3)
  • Borg-Warner T-10 (Super T10)
  • Borg-Warner T-10 transmission
  • Borg-Warner T-10 transmission
  • Borg-Warner T-10 transmission
  • Richmond/Borg-Warner Super T10
  • Saginaw transmission
  • Saginaw transmission
  • Saginaw transmission
  • Powerglide transmission

Charts

(PDF)

Installation Tips

Specs

Notes

Please 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.

Reviews

Do yourself a favor and get one of these!

Rated

Product Rating

by Jay Horton’s Private Shop on December 01, 2021

Summary: This unit is heavy duty. Great looking welds and nicely coated. Slide it into place and dropped the bolts right in the holes; perfect fit with a little wiggle room for adjustment. I like it!

Cons: No cons. This thing is better than sliced bread

Yes, I recommend this product.

Would buy again

Rated

Product Rating

by BuzzBomb on April 19, 2021

Summary: Heavy and strong. Fit great

Yes, I recommend this product.

Would recommend

Rated

Product Rating

by Ryan on April 13, 2021

Summary: Perfect finishing touch for the Gbody.

Yes, I recommend this product.

Yes

Rated

Product Rating

by John on November 09, 2020

Summary: Worked out great, needs a diff mount to use with a turbo 350 trans.

Yes, I recommend this product.

Tech Support

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About

Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is …
Brand
G-Force
Manufacturer Part Number
RCG-350

About this product

Product Identifiers

Brand
G-Force
Manufacturer Part Number
RCG-350
eBay Product ID (ePID)
251958396

Additional Product Features

Notes
Description–Superduty Steel Powdercoated Double-Hump Crossmember for Dual Exhaust
Part Type
Frame
Sub Type
Transmission Crossmember