RCBE-700 1965-1970 B body crossmember angled back view with mounting hardware

1965-1970 700R4 B body crossmember


Model: RCBE-700

GForce Performance Exclusive-

Transmission Crossmember for your 65-70

Model: General Motors B-Body, 1965 – 1970, GM B Body Caprice / Impala Crossmember.

The G Force RCBE-700,  1965-1970 B Body Crossmember. Fits Transmission types: 700R4, 4L60, TKO.

*Important Note * :   You must first measure your frame across Frame rail  to  Frame rail  ( hole center  to  hole center).    This should be 54″ inches across

for this trans-crossmember to install properly without modifications. 

Models:  Bel-Air, Caprice, Impala, Biscayne, Electra, Le Sabre, Catalina, Bonneville, Delta 88, Starfire, Delmont, Delta 88, etc

Installation Instructions for GM applications.

-A commercial automotive lift is recommended for under car installations.
-Never work under a car supported by jacks or other unstable lifting devices.
-If a commercial lift is not available, always support the car at all four corners of the frame with jack stands or other stable holding devices.
SAFETY GLASSES ARE HIGHLY RECOMMENDED. (Metal chips, falling dirt and rust are an eye hazard.)
-Support transmission with a suitable lifting device. (Do not crush the transmission pan. The internal pickup screen is very close to the pan surface.)
-Remove transmission mount bolt/stud. (Some vehicles are equipped with one, while others with two.)
-Remove bolts that mount the crossmember to the frame.
-If attached, remove speedometer cable and emergency brake bracket from the crossmember .
-Remove OEM crossmember -carefully lifting transmission if needed.
-Discard rubber isolators at ends of crossmember if equipped. They will not be reused.
-A new transmission mount is recommend ed. Use the centered type only, offset mounts will not fit.
-Remove sand, debris, and mst from inside frame rails. The new crossmember should be mounted on clean surfaces. (This is also the perfect opportunity to clean and detail the undercarriage.)
-For vehicles originally equipped with 3/8″ crossmember bolts, open (re-drill) existi ng holes on frame to 1/2″. Ifyou prefer to retain 3/8″fasteners, upgrade to Gr. 8 bolts and hardened flat washers.
-Install new crossmember. (On “G” Body cars position the larger hump on the passenger side of the car.)

NOTE: Some minor contact between the floorpan and the crossmember may occur due to body bushing settling and deterioration, or a bowed floor pan. Usually this is not a problem. A hydraulic floor jack with a wood cushion will correct a bowed floor.
-Install new crossmember to frame mounting bolts.
-Install transmission mount bolt/stud.


Additional information

Weight 35 lbs
Dimensions 57 × 11 × 6 in
Product Years

Product Years Individual

, , , , ,

Chevrolet Models

, , ,

Buick Models


You may also like…

  • GMTM-SP Transmission Mount, Pinion Angle Shims for Most GM Rwd Applications. Set of 4.

    Transmission Mount, Pinion Angle Shims for Most GM Rwd Applications. Set of 4.

    Model: GMTM-SP $7.50
    Add to cart | View Details
  • GF-GMATM Adjustable Transmission Mount- GM RWD with mounting hardware

    GM adjustable transmission mount- RWD

    Model: GF-GMATM $99.50
    Add to cart | View Details
  • GMTM standard height transmission mount with hardware

    Transmission Mount, Standard Height

    Model: GMTM $35.00
    Add to cart | View Details
Your Cart