Find the Right Crossmember to Support Your Transmission
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 transmission 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 transmission 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:
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: 2004R, 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. Our customers choose a G Force crossmember because of their strength, durability, and ease of installtion. Now, 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 S10: S-10 pickup, S15 pickup.
GM X-BODY: Nova, Chevy II, Ventura, GTO, Omega, Apollo.
GM Y-BODY: Corvette C3 gen
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: 2004R, TH400 SHORT TAIL, etc.
GROUP GM-4: 4L80E, 4L85E, etc.
GROUP GM-5: OEM T-56 (SWAP FROM LATE MODEL F-BODY)
GROUP GM-6: 6L80E (Slip Yoke), 6L90E (Slip Yoke)
GROUP GM-7: 8L90E (Slip Yoke)
GROUP GM-8: 700R4 (Tailshaft Mount Trans Mount), 4L60E (Tailshaft Mount Trans Mount)
GROUP F-1: AOD, TREMEC, etc.
Transmission Group Charts
GM A-Body Chart
GM B-Body Chart
GM C-Series Truck Body Chart
GM C-Body Chart
GM E-Body Chart
GM F-Body Chart
GM G-Body Chart
GM S10-Body Chart
GM S10 Blazer & Jimmy Body Chart
GM V-Body Chart
GM X-Body Chart
GM Y-Body Chart
GM Universal Kit Chart
Old Bravada Body Chart
Ford Mustang Body Chart
G Force has put together lots of useful information about our crossmember products. Check out these pages to learn more.
- A lighter weight Next Generation Crossmember may be right for you
- Why weight matters