G Force Performance Products

Fits 1964-1967 GM A-Body Convertible with multiple T56 transmissions including T56 Magnum, and T56 Magnum XL.  Also fits TR6060 with our adapter which is sold separately.

Models include Chevrolet Chevelle, Chevrolet El Camino, Chevrolet Malibu, Pontiac Grand Prix, Pontiac GTO, Pontiac LeMans, Pontiac Tempest, Buick GS, Buick Skylark, Oldsmobile 442, Oldsmobile Cutlass, and Oldsmobile F85.

For a proper fit with these transmissions, the GF-GMATM Transmission Mount is included.

For 1964-1967 convertibles or boxed frames the distance between the crossmember frame mounting holes is 43-1/4″. To ensure proper crossmember selection be sure to measure your frame before you order.

1967-1972 CHEVY C10 CROSSMEMBER

Fits Models: C10 2WD. This crossmember will not work on 4WD vehicles.

Fits Years: 67-72

Fits Transmissions: 700R4, 4L60, 4L60E, 2004R, TH400, Powerglide, TH350, 4L80E, 6L80E, Muncie, T10, TKO, T56

As a direct replacement most transmission applications are a direct bolt into the factory crossmember holes on the lower frame rail.

This crossmember is a stock replacement and LS swap crossmember designed to allow a dual exhaust system to be routed under the crossmember, allowing ease of header connection, while keeping the exhaust above the frame rails.

It’s great for stock chassis and lowered trucks alike.

The unique design of this crossmember accommodates large heavy duty transmissions such as a 4L80E with slight modifications, or by repositioning and drilling additional mounting holes.

Fits 1968-1972 GM A-Body Convertible with multiple T56 transmissions including T56 Magnum, and T56 Magnum XL.  Also fits TR6060 with our adapter which is sold separately.

Models include Chevrolet Chevelle, Chevrolet El Camino, Chevrolet Malibu, Pontiac Grand Prix, Pontiac GTO, Pontiac LeMans, Pontiac Tempest, Buick GS, Buick Skylark, Oldsmobile 442, Oldsmobile Cutlass, and Oldsmobile F85.

For a proper fit with these transmissions, the GF-GMATM Transmission Mount is included.

For 1968-1972 convertibles or boxed frames the distance between the crossmember frame mounting holes is 47-1/4″. To ensure proper crossmember selection be sure to measure your frame before you order.

Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal

Fits the following transmissions: 700R4, 4L60, 4L60E, Tremec TKX, TKO-500, TKO-600.

Newly designed and manufactured by G Force Performance to be lighter weight for improved performance and still maintain the same quality as the original RCG-700 Crossmember.

Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately.

Notes:

• On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.
• 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.
• The crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.

Newly designed and manufactured by GForce Performance- The same quality of our original crossmember, designed and manufactured to be lighter for performance.

1964 – 1967  Transmission types are TH350, Muncie, Powerglide, T-10, Super-T-10, Saginaw, TH200, TH250, 700R4, 4L60, 4L60E, GM T-5, TREMEC TKO-500, and TKO-600.

1968 – 1972  Transmission types are TH350, Muncie, Powerglide, T-10, Super-T-10, Saginaw, TH200, TH250, 700R4, 4L60, 4L60E, GM T-5, TREMEC TKO-500, TKO-600, 200R4 , and TH400(Short Tail-shaft).

Note: 1968-1972 fitment – Hardtop only – No Convertibles, No El Caminos

Fits the following transmissions (depending on the model year-see addition notes below) TH350, Muncie, Powerglide, T-10, 700R4, 4L60, 4L60E, TH400, 2004R, Super T-10, Saginaw, TH200, TH250, GM-T5, TREMEC TKO 5 speeds. Crossmember is Black-Satin Powdercoated for a durable finish, and includes new Grade#8 mounting hardware. Note: Transmission Mount is purchased separately, and we recommend a Polyurethane Transmission Mount, such as our GForce part # GMTM.

(Note: Distance between crossmember frame mounting holes is 53-5/8″ inches. Be sure to measure your frame FIRST ! Before you order, to insure proper selection.)

Part #RCAE installation notes :

• Crossmember is installed with transmission mounting tab positioned towards front of car, and exhaust double humps are on the top, next to floor pan.
• The supplied aluminum spacers are to provide custom height positioning of your transmission mount. (if you need them) They are positioned between the crossmember and your GM 3 hole transmission mount. Select desired amount of spacers needed and use longer bolts to insure full engagement into transmission mount. Some applications will not require any spacers.
• Some vehicles of this generation are equipped with a crossmember that bolts directly to the vehicles frame rail, while others are equipped with crossmembers that utilize tabs that set on the frame rails, embedded with a rubber liner. Our #RCAE crossmember bolts directly to the frame rails to the factory frame holes. ( Do Not Use The Rubber Pads ! ) utilize the provided 7/16″ hardware and enlarge holes in your frame rails with a 1/2″ drill-bit. If you stay with the stock size 3/8″ hardware, it is strongly recommended to use new Grade #8 fasteners to compensate.

Fits the following GM transmissions : 700R4 , 4L60 , 4L60E , Tremec TKO-500, TKO-600, and GM T-5.

Model: Camaro, Firebird , Trans Am, Formula 400: Also 1968-1974 Nova, Omega, Ventura

Finished in a durable black-satin powdercoat paint. Includes new high-strength, Grade#8 mounting hardware. Purchase transmission mount separately. A polyurethane transmission mount is recommended.

( Note : The distance between the crossmember frame mounting holes is approximately 30-3/8″ inches. Be sure to measure your frame First , to insure proper selection.)

Installation notes:

This crossmember is installed with the GForce label facing the REAR of the vehicle. A second determining feature is the crossmember center tube section has a 1/2″ in. drain hole located on the BOTTOM and should be on the PASSENGER side next to the exhaust hump weldment.
The crossmember is installed so that the exhaust humps are towards the floor of car and open to bottom. The Exhaust runs under the crossmember.
To utilize the new provided 7/16″ in. mounting hardware, it is necessary to enlarge the OEM holes in the frame. If installer chooses to utilize the stock size 3/8″ in. hardware, it is STRONGLY recommended that installer obtains Grade#8 high-strength fasteners & washers to compensate.

Fits:

• • 1967 Chevy Camaro
  • 1968 Chevy Camaro
  • 1969 Chevy Camaro
  • 1967 Pontiac Firebird
  • 1968 Pontiac Firebird
  • 1969 Pontiac Firebird
  • 1968 Chevy Nova
  • 1968 Pontiac LeMans, Tempest, GTO,Ventura
  • 1969 Chevy Nova
  • 1969 Pontiac LeMans, Tempest, GTO,Ventura
  • 1970 Chevy Nova
  • 1970 Pontiac LeMans, Tempest, GTO,Ventura
  • 1971 Chevy Nova
  • 1971 Pontiac LeMans, Tempest, GTO,Ventura
  • 1972 Chevy Nova
  • 1972 Pontiac LeMans, Tempest, GTO,Ventura
  • 1973 Chevy Nova
  • 1973 Pontiac LeMans, Tempest, GTO,Ventura
  • 1974 Chevy Nova
  • 1974 Pontiac LeMans, Tempest, GTO,Ventura

1977 – 1990 GM B-Body Transmission Crossmember for TH400 short tail, 2004R, 700R4 with B-Body Tailshaft Mount

Dual Exhaust Clearance

Applicable Vehicles: Chevrolet Impala, Buick LeSabre, Buick Estate, Oldsmobile Custom Cruiser, Oldsmobile 88, Pontiac Bonneville, Pontiac Parisienne, Pontiac Catalina, Pontiac Laurentian, Pontiac Safari

For all you Classic B-Body Builders, GForce has designed a direct bolt-in transmission crossmember to accommodate your 2004R or TH400 short tail transmissions, as well as your 700R4 that has the tailshaft transmission mount. One crossmember, both transmissions! This is accommodated by a second set of mounting holes on the crossmember to allow positioning the crossmember in the two different locations. And this is accomplished 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. Purchase your polyurethane transmission mount separately part number GMTM. Utilizes early GM double stud pattern on 1 1/2″ centers.

This crossmember utilizes the same patented G Force design that has made us the stand alone leader in high performance transmission crossmembers. The large exhaust clearance humps facilitate large diameter exhaust systems, and allow you to tuck it up tight for your slammed and ground hugging build. Buy yours today!

Important Note: When considering the popular 700R4, there are two basic transmission mount locations. One version utilizes a transmission mount directly behind the transmission pan on the transmission case. With the other version the transmission mount is located further reward and bolts to the tailshaft housing. It is crucial that you properly determine which mount location your 700R4 has. This RCB3-400 is designed to accommodate the longer tailshaft mount. If you have the shorter case mount transmission, you will need to purchase our RCB3-700 crossmember.

Fits:

• Buick LeSabre
• Buick Electra/LeSabre Estate
• Buick Estate
• Chevrolet Caprice
• Chevrolet Impala
• Pontiac Bonneville
• Pontiac Catalina/Laurentian
• Pontiac Catalina Safari
• Oldsmobile 88
• Oldsmobile Custom Cruiser

GForce G-Body Frame Extension for G-Body

GForce G-Body Transmission Crossmember for T56

GForce G-Body Transmission Crossmember for T56 with Frame Extension

Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal

Fits the following transmissions: TH350, Muncie, Powerglide, T-10, super T-10, Saginaw, TH200.

Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately.

Notes:

• On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.
• 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.
• The crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.

Models: Malibu, Monte Carlo, El Camino, Cutlass, Grand Prix, Regal

Fits the following transmissions: 700R4, 4L60, 4L60E, TKO-500, TKO-600.

Finished in a black powder coat. Includes new mounting hardware. Purchase transmission mount separately.

Notes:

• On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan.
• 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.
• The crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.