Find the Right Crossmember to Support Your Transmission

Transmission Crossmember Specifications — Information you need for your next project

Which Crossmember is right for your project:

To make finding the right Crossmember for your project easy, we’ve created a Transmission Group Chart, which also includes the transmission crossmember specifications you need to know. For your convenience,  you may use the tables and charts below to find your Body Classification, Transmission Group, Transmission Notes, and the Crossmember Part Number you need. Moreover, the complete cross-reference guide follows the “How to” section below.

How to use the Transmission Crossmember Specifications chart:

Step 1- To begin, find your Body Classification. This is sometimes referred to as ‘Body Type.” If you don’t already know yours, look for the year, make, and model of your car in the Body Classification Notes below or find it on our full list of body types. Once you’ve found your car, jot down whether it’s an A, C, E, F, G, S-10, X, or Y.

Step 2- Find the section in the Transmission Group Chart for that Body Classification. If it is listed under more than one Body Type, match the model year to find the correct classification.

Step 3- Once you’ve found the correct line for your Body Type and Year on the chart, you will see the Transmission Groups that fit your Body Classification. Make a note of the Transmission Groups. Also on this line you will find the correct Crossmember Part Number associated with the Transmission Groups. Remember it’s there, you’ll refer back to it in Step 5.

Step 4- Look up your tranmission in the Transmission Notes and jot it down the associated Transmission Group. If you’re unsure which transmission you have, check out our list of Popular Transmission Pan Patterns to help you identify yours.

Step 5- Refer back to the Transmission Group Chart and write down the Crossmember Part Number that corresponds to your Body Classification and Transmission Group.

Step 6– You’re ready to place your order! Search for the Crossmember Part Number and add it to your cart. Complete the checkout and your new crossmember will be on its way to you.

Here’s an example.

Let’s say you own a 1975 Monte Carlo and have a TH350 Transmission. You will see the Monte Carlo listed under two Body Classifications, “A” and “G.” This is because depending on your model year, the body style varies.

Body Classifications for this example:

GM A BODY: Intermediates, ie: Malibu, Monte Carlo, El Camino, Skylark, GS, Cutlass, GTO, Regal, Chevelle, etc.
GM G BODY: Intermediates, ie: Malibu, Monte Carlo, El Camino, Cutlass, Regal, Grand Prix, etc.

However, when you look at these sections of the Transmission Group Chart, you’ll see that your model year is listed for the “A” Body only. The earliest year for the GM G Body is 1978.

Transmission Group Chart for this example:

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM A (CHANNEL FRAME)1973-197751-1/8”RCALGM-1, GM-36x11x5636
GM A (CHANNEL FRAME)1973-197751-1/8”RCAL-700GM-26x11x5636
GM A (CHANNEL FRAME)1973-197751-1/8”GM-46x12x5640

Transmission Notes for this example

GROUP GM-1: TH350, MUNCIE, POWERGLIDE, T-10, SUPER T-10, SAGINAW, TH200, etc.
GROUP GM-2: 700R4, 4L60, 4L60E, TKO-500, TKO-600, etc.
GROUP GM-3: 200R4, TH400 SHORT TAIL, etc.
GROUP GM-4: 4L80E, 4L85E, etc.

Based on this, the possible Transmission Groups for your car are GM-1, GM-3, GM-2 and GM-4. Part numbers RCAL, RCAL-700, and RCAL4L80 are options for your car. To find out the correct Crossmember Part Number, the next step is to refer to the Transmission Notes and find your transmission, TH350.

You’ll see it listed under GM-1. The final step is to find the Crossmember Part Number associated with GM 1 by referring to the Transmission Group Chart (see the example above). For this example, you would choose Crossmember Part Number RCAL.

Finding the right Crossmember is easy. Go ahead, give our Transmission Crossmember Specifications charts a try!

 


CROSS-REFERENCE GUIDE

Lookup the right Crossmember for your project

BODY CLASSIFICATION NOTES

The most popular makes and models are shown below. Find a complete list on the Car Body Types page.

GM A BODY: Intermediates, ie: Malibu, Monte Carlo, El Camino, Skylark, GS, Cutlass, GTO, Regal, Chevelle, etc.
GM B BODY: Caprice, Impala, Bel-Air, Biscayne, Electra, Le Sabre, Catalina, Bonneville, Delta 88, Starfire, Delmont
GM C BODY (Truck Series): C10 Pickup
GM C BODY: Full Size, ie: Electra, 98, Deville
GM E BODY: Riviera
GM F BODY: Camaro, Firebird, Trans Am.
GM G BODY: Intermediates, ie: Malibu, Monte Carlo, El Camino, Cutlass, Regal, Grand Prix, etc.
GM S-10: S-10 pickup, S-15 pickup.
GM X BODY: Nova, Chevy II, Ventura, GTO, Omega, Apollo.
GM Y BODY: Corvette C3 gen
GM UNIVERSAL Kit
Olds Bravada
Ford Mustang


TRANSMISSION NOTES

The most popular transmissions that share the same Crossmember are listed below. A complete list can be found on the Transmission Groups page.

GROUP GM-1: TH350, MUNCIE, POWERGLIDE, T-10, SUPER T-10, SAGINAW, TH200, etc.
GROUP GM-2: 700R4, 4L60, 4L60E, TKO-500, TKO-600, etc.
GROUP GM-3: 200R4, TH400 SHORT TAIL, etc.
GROUP GM-4: 4L80E, 4L85E, etc.
GROUP GM-5: OEM T-56 (SWAP FROM LATE MODEL F-BODY)
GROUP F-1: AOD, TREMEC, etc.


Transmission Group Charts

GM A Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM A (CHANNEL FRAME)1964-196753-5/8”RCAEGM-1, GM-26x11x5735
GM A (CHANNEL FRAME)1964-196753-5/8”RCAE-4GM-36x11x5735
GM A (CHANNEL FRAME)1968-197253-5/8”RCAEGM-1, GM-2, GM-36x11x5231
GM A (CHANNEL FRAME)1968-197253-5/8”RCAE-4GM-46x11x5735
GM A (BOXED FRAME)1964-196743-1/4”RCAEC1GM-1, GM-26x11x5235
GM A (BOXED FRAME)1964-196743-1/4”RCAEC1-400GM-36x12x4534
GM A (BOXED FRAME)1968-197247-1/2”RCAEC2GM-1, GM-2, GM-36x11x5231
GM A (BOXED FRAME)1968-197247-1/2”RCAEC2-4L80GM-46x11x5233
GM A (CHANNEL FRAME)1973-197751-1/8”RCALGM-1, GM-36x11x5636
GM A (CHANNEL FRAME)1973-197751-1/8”RCAL-700GM-26x11x5636
GM A (CHANNEL FRAME)1973-197751-1/8”RCAL-4L80GM-46x12x5640
GM A (CHANNEL FRAME)1968-197253- 5/8”RCAE-GV (gear vendors overdrive unit)GM-66x11x5735

GM B Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM B1965-1970RCBEGM-16x11x5735
GM B1977-1990RCB3-700GM- 26x11x5735
GM B1965-1970RCBE-700GM-26X11X5735
GM B1977-1990RCB3-400GM-36X11X5735

GM C Series Truck Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM C SERIES TRUCK1967-1972RCC10-2UNIVERSAL6X9X3511
GM C SERIES TRUCK1973-1987RCC10-3UNIVERSAL6X9X3511

GM C Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM C1971-197654-1/2”RCE-400OEM TH4006x11x5839

GM E Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM E1971-197654-1/2”RCE-400OEM TH4006x11x5839

GM F Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM F1967-1969RCF1-350GM-16x6x3617
GM F1967-1969RCF1-400GM-36x12x3620
GM F1967-1969RCF1-700GM-26x6x3617
GM F1967-1969RCF1-700GM-26x6x3617
GM F1967-1969RCF1-T56GM-56x12x3620
GM F1967-1969RCF1-4L80GM-46x12x3622
GM F1970-1974RCF2E-350GM-16x12x3620
GM F1970-1974RCF2E-400GM-36x6x3617
GM F1970-1974RCF2E-700GM-26x9x3619
GM F1970-1974RCF2E-T56GM-56x6x3618
GM F1970-1974RCF2E-4L80GM-46x9x3620
GM F1975-1981RCF2L-350GM-16x6x3618
GM F1975-1981RCF2L-400GM-36x12x3621
GM F1975-1981RCF2L-700GM-26x9x3619
GM F1975-1981RCF2L-T56GM-56x12x3621
GM F1975-1981RCF2L-4L80GM-47x19x3724
GM F2010-2015RCF5-400GM-33X12X188
GM F2010-2015RCF5-4L80GM-42X13X188

GM G Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM G1978-1983RCG-350GM-16x11x5130
GM G1978-1983RCG-400KGM-36x11x5134
GM G1978-1983RCG-700GM-26x11x5131
GM G1978-1983RCG-T56KGM-56x11x5135
GM G1978-1983RCG-4L80KGM-46x11x5130
GM G1978-1983FE-100(FRAME EXTENSION)2x5x195
GM G1984-1988RCG-350GM-16x11x5130
GM G1984-1988RCG-400GM-36x11x5130
GM G1984-1988RCG-700GM-26x11x5131
GM G1984-1988RCG-T56GM-56x11x5131
GM G1984-1988RCG-4L80GM-46x11x5130

GM S-10 Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM S-101982-2005RCS-10GM-1, GM-27x11x4130
GM S-101982-2005RCS-10-400GM-37X15X3931
GM S-101982-2005RCS-10-4L80GM-47X15X3931
GM S-101982-2005RCS-10-T56GM-57X15X3932

GM S-10 Blazer & Jimmy Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM S10 (BLAZER & JIMMY)1982-2005RCS-10B-700GM-37X9X3814

GM V Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM V2004-2006RCV4-400GM-33X12X188
GM V2004-2006RCV4-4L80GM-43X12X188

GM X Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM X1962-1967RCNV-350GM-16x6x369
GM X1962-1967RCNV-400GM-26x12x3612
GM X1962-1967RCNV-700GM-36x6x3610
GM X1968-1974RCF1-350GM-16x6x3617
GM X1968-1974RCF1-400GM-36x12x3620
GM X1968-1974RCF1-700GM-26x6x3617
GM X1968-1974RCF1-T56GM-56x12x3620
GM X1968-1974RCF1-4L80GM-46x12x3622
GM X1975-1979RCF2L-350GM-16x6x3618
GM X1975-1979RCF2L-400GM-36x12x3621
GM X1975-1979RCF2L-700GM-26x9x3619
GM X1975-1979RCF2L-T56GM-56x12x3621
GM X1975-1979RCF2L-4L80GM-47x19x3724

GM Y Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM Y1968-1981RCC3-350GM-16x13x5230
GM Y1968-1981RCC3-400GM-36x11x5230
GM Y1968-1981RCC3-700GM-26x11x5230
GM Y1968-1981RCC3-4L80GM-46x13x5230
GM Y1968-1981RCC3-T56GM-56x11x5230

GM Universal Kit Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
GM UNIVERSAL KITRC-KITUNIVERSAL6x9x3633

Old Bravada Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
Olds Bravada1996-2001GMT-330-2OEM6x11x4115

Ford Mustang Body Chart

BODY CLASSIFICATIONMODEL YEARSFRAME RAIL TO FRAME RAIL, HOLE CENTER TO HOLE CENTERPART NUMBERAPPLICABLE TRANSMISSIONSSHIPPING DIMENSIONSSHIPPING WEIGHT- LBS.
FORD MUSTANG1967-1973RCM1LF-117x7x55
FORD MUSTANG1979-1993RCMFBF-14x4x298
FORD MUSTANG1994-1999RCM4F-14x4x298

 

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