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1978-1988 GM G-Body Modular Transmission Crossmember, Adjustable UMI PERFORMANCE
Transform your GM G-body with UMI's state-of-the-art modular crossmember system
Designed to deliver precision, performance, and versatility. Engineered with a laser-cut tab and slot design, this innovative solution offers multiple mounting locations, enabling you to fine-tune your driveline angle effortlessly. Our brace design provides plenty of space for large diameter dual exhausts, ensuring seamless installation and optimal functionality.
Whether you're upgrading or maintaining your vehicle, our system accommodates various transmission models with ease.
Total Brace Weight: 22 lbs.
Optional Transmission Mount: Most applications use 3.1158 (short mount), but we also sell a taller 3.1108 should it be required. If you are unsure which mount to try you can install and then measure.
Fitment Notes:
Confirmed to work with TKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80, 6L80
Does not work with TR6060
Excessive amounts of forward and rearward adjustment, along with up and down positions may allow fitment of other transmissions and combinations not listed.
When using a transmission mount with a molded stud, The stud must measure, 1.5" or longer in length to adapt to the crossmember block. If needed, purchase the Energy Suspension mount as an add-on.
Laser cut tab and slot design is lightweight and strong
5 position CNC machined billet aluminum transmission mount
CNC machined billet aluminum spacer included for 1978-1981 frames
Two transmission bushing mount options (sold separately)
Large cutouts to fit oversized dual exhaust systems
Transform your GM G-body with UMI's state-of-the-art modular crossmember system
Designed to deliver precision, performance, and versatility. Engineered with a laser-cut tab and slot design, this innovative solution offers multiple mounting locations, enabling you to fine-tune your driveline angle effortlessly. Our brace design provides plenty of space for large diameter dual exhausts, ensuring seamless installation and optimal functionality.
Whether you're upgrading or maintaining your vehicle, our system accommodates various transmission models with ease.
Total Brace Weight: 22 lbs.
Optional Transmission Mount: Most applications use 3.1158 (short mount), but we also sell a taller 3.1108 should it be required. If you are unsure which mount to try you can install and then measure.
Fitment Notes:
Confirmed to work with TKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80, 6L80
Does not work with TR6060
Excessive amounts of forward and rearward adjustment, along with up and down positions may allow fitment of other transmissions and combinations not listed.
When using a transmission mount with a molded stud, The stud must measure, 1.5" or longer in length to adapt to the crossmember block. If needed, purchase the Energy Suspension mount as an add-on.
Laser cut tab and slot design is lightweight and strong
5 position CNC machined billet aluminum transmission mount
CNC machined billet aluminum spacer included for 1978-1981 frames
Two transmission bushing mount options (sold separately)
Large cutouts to fit oversized dual exhaust systems