1977-1990 B-Body Crossmember RCB3-700 | G Force Crossmembers — G Force Performance Products
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1977-1990 B-Body Crossmember | RCB3-700 for 700R4, 4L60, Pre-1996 4L60E, TKO-500, TKO-600, TKX transmissions with installation hardware
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1977-1990 B-Body Crossmember | RCB3-700

by G Force Performance Products
SKU RCB3-700
$395.00

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Product Information

Description

  • Fits Models: Caprice, Impala, LeSabre, Oldsmobile 88, Bonneville, Parisienne, Catalina
  • Fits Years: 77-90
  • Fits Transmissions: 700R4, 4L60, Pre-1996 4L60E, TKO-500, TKO-600, TKX.
  • This crossmember will fit 1996 and later 4L60E, and 4L65E transmissions for LS engine swaps.
  • The RCB3-700 is designed for the 700R4 / 4l60E transmission with a case mount transmission mount. For a 700R4 with a tailshaft mount purchase the RCB3-400 crossmember instead.  
  • Engineered with 2 mounting slots to accept a standard height transmission mount.
  • We recommend a polyurethane transmission mount. The GMTM is sold separately. 
Boss Hog Torque Converters recommended for this application:

  • Fits Models: Caprice, Impala, LeSabre, Oldsmobile 88, Bonneville, Parisienne, Catalina
  • Fits Years: 77-90
  • Fits Transmissions: 700R4, 4L60, Pre-1996 4L60E, TKO-500, TKO-600, TKX.
  • This crossmember will fit 1996 and later 4L60E, and 4L65E transmissions for LS engine swaps.
  • The RCB3-700 is designed for the 700R4 / 4l60E transmission with a case mount transmission mount. For a 700R4 with a tailshaft mount purchase the RCB3-400 crossmember instead.  
  • Engineered with 2 mounting slots to accept a standard height transmission mount.
  • We recommend a polyurethane transmission mount. The GMTM is sold separately. 
Boss Hog Torque Converters recommended for this application:


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Specifications

Weight: 32 lbs

Shipping Dimensions: 53 × 11 × 7 In

Finish: Black Powder Coated

Mounting Hardware: Included

See the G Force Crossmember Overview for more info.

Many G Force Crossmembers utilize the early GM double stud transmission mount configuration, for the increased strength aspects. Should your vehicle originally be equipped with a single centered stud transmission mount, simply replace your transmission mount with the early style.

For vehicles originally equipped with 3/8″ crossmember bolts, open existing holes on frame to 1/2″. If you prefer to retain 3/8″fasteners, upgrade the installations hardware to Grade 8 bolts and hardened flat washers.

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