Product Summary

2004R, 700R4, TH400, 49" Overall Length, Steel

  • Fits 1977-1990 B-Body GM
  • Large exhaust clearance humps for large diameter exhaust systems
  • Made from steel and powdercoated black
  • No drilling, cutting, grinding, or welding required
  • Mounts using the factory crossmember mounting locations
See more details

Key Specs

MFG. Part #RCB3-400
Overall Length49"
Centerline of Holes47"
Material TypeSteel
FinishPowder Coated
See more specs

Need To Know

Quick and Easy Returns

Return Policy

G Force Crossmembers RCB3-400 Details

For all you Classic B-Body Builders, we've designed a direct bolt-in transmission crossmember to accommodate your swapped transmission while still using the factory crossmember mounting locations. No drilling, cutting, grinding, or welding! Simple and complete instructions are included, along with new mounting hardware.

NOTE: 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.

  • Fits 1977-1990 B-Body
  • Large exhaust clearance humps for large diameter exhaust systems

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-3 Transmission Group:

  • Turbo Hydra-Matic 2004R (TH2004R)
  • Turbo Hydra-Matic 400 (TH400)
  • Turbo Hydra-Matic 375 (TH375)

Charts

Specs

Overall - 47 3/4"
Center Hole To Center Hole 45 7/8"

G Force Crossmembers RCB3-400 Specifications

KEY SPECS
MFG. Part #RCB3-400
BrandG Force Crossmembers
Overall Length49"
Centerline of Holes47"
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.

Questions & Answers

Fitment

  • 250 Chevy Turbo-Thrift 6 I6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • 250 Chevy Turbo-Thrift 6 I6

  • 4.1 Buick Even Fire V6

  • 4.1 Buick Even Fire V6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LB1 90-Degree Chevy

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 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

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 229

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 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

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LG3 Small Block Chevy

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 229

  • 2-Piece Rear Main Chevy 267

  • 2-Piece Rear Main Chevy 350

  • 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 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LG3 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 2-Piece Rear Main Chevy 350

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • 2-Piece Rear Main Chevy 350

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 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

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 2-Piece Rear Main Chevy 350

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 LB1 90-Degree Chevy

  • 250 Chevy Turbo-Thrift 6 I6

  • 250 Chevy Turbo-Thrift 6 I6

  • Gen 1 L14 Small Block Chevy

  • Oldsmobile 403

  • Oldsmobile 403

  • Oldsmobile 403

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • Oldsmobile 403

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • Oldsmobile 403

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • Oldsmobile 403

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • Oldsmobile 403

  • 260 Oldsmobile Small-Block V8

  • 260 Oldsmobile Small-Block V8

  • Oldsmobile 403

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

  • 265 Pontiac V8

Customer Impersonation Script