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

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#64084884

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

  • Fits the GM-4 Transmission Group (see list)
  • This crossmember is specifically designed for the 1984-1988 G-Body vehicles
  • Crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom
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$375.00

/each

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Product Summary

4L80E, 4L85E, E40D, Steel, Powder Coated

  • Fits the GM-4 Transmission Group (see list)
  • This crossmember is specifically designed for the 1984-1988 G-Body vehicles
  • Crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom
See more details

Key Specs

MFG. Part #RCG-4L80
BrandG Force Crossmembers
Material TypeSteel
FinishPowder Coated
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G Force Crossmembers RCG-4L80 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.

  • 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

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

G Force Crossmembers RCG-4L80 Specifications

KEY SPECS
MFG. Part #RCG-4L80
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

5

2 Reviews

Overall Assessment

Customers have praised the high-quality, practicality, and fitting precision of our product, especially for 4l60e to 4l80e conversion in older model cars like a 1986 Pontiac Grand Prix. Its top-quality build outperforms cheaper alternatives and assures seamless integration. Many customers would repurchase due to its usability and excellent material quality.

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5

2 reviews

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I would buy this product again

5.0

2 years ago

KJax

Southaven, Ms

Verified

Worked perfect for my 4l60e to 4l80e conversion in my 1986 Pontiac Grand Prix.

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

5.0

5 years ago

Monster

Colorado

Verified

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

Would Recommend

Showing 2 of 2 reviews

Questions & Answers

1 Question • 1 Answer

G Force RCG-4L80 in stock?

by pedro

• 7 years ago

1 answer

View Answer

1 of 1 questions shown

Fitment

  • 4.1 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

  • 4.1 Buick Even Fire V6

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 229

  • 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 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 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 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree 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 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • Gen 1 LB1 90-Degree 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

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree 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

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LB1 90-Degree Chevy

Customer Impersonation Script