Skip to content
1984-1988 G-Body Crossmember | RCG-400NG-BLK-8L90

1984-1988 G-Body Crossmember | RCG-400NG-BLK-8L90

by G Force Performance Products
$439.00
SKU RCG-400NG-BLK-8L90

Notify me when back in stock

  • Fits Models: Riviera, Electra, Olds 98, Deville
  • Fits Years: 84-88
  • Fits Transmissions: Transmission_8L90E Slip Yoke
  • For a proper fit with this transmission, the GF-GMATM Transmission Mount is included.
  • This crossmember allows installation of your long tube headers and provides clearance for large diameter aftermarket dual exhaust systems.
  • For the 1971-1976 frames the distance between the crossmember frame mounting holes is 54-1/2". To ensure proper crossmember selection be sure to measure your frame before you order. 

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

Product Description

  • Fits Models: Riviera, Electra, Olds 98, Deville
  • Fits Years: 84-88
  • Fits Transmissions: Transmission_8L90E Slip Yoke
  • For a proper fit with this transmission, the GF-GMATM Transmission Mount is included.
  • This crossmember allows installation of your long tube headers and provides clearance for large diameter aftermarket dual exhaust systems.
  • For the 1971-1976 frames the distance between the crossmember frame mounting holes is 54-1/2". To ensure proper crossmember selection be sure to measure your frame before you order. 
PRODUCT DETAILS  

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.

LEARN MORE

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.

DOWNLOAD INSRUCTIONS

SHOPTALK

See the G Force Crossmember Overview for more info.

This crossmember is installed with the G Force label facing the rear of the vehicle. However, another determining feature is the crossmember center tube which has a 1/2″ drain slot that is positioned on the bottom and on the passenger side next to the hump weldment.

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

To use the provided 7/16″ hardware it is necessary to enlarge holes in your frame rails with a 1/2″ drill. If you choose to use the stock size 3/8″ hardware, it is strongly recommended to use new Grade #8 fasteners to compensate.

Discover more about the G Force Crossmember product line on these pages-

Years

1984 | 1985 | 1986 | 1987 | 1988

Models

Buick: Riviera, Electra
Oldsmobile: Olds 98, Deville

Transmissions

8L90E Slip Yoke

Specifications

Weight: 28 lbs

Shipping Dimensions: 57 x 17 x 11 In

Finish: Black Powder Coated

Mounting Hardware: Included

Customer Reviews

No reviews yet
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)