UMI Performance 78-88 GM G-Body Modular Adjustable Transmission Crossmember - Black

Introducing UMI's Cutting-Edge Modular Crossmember System: The Ultimate Transmission Mounting Solution for Your 1978-1988 GM G-Body 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 designs 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.

• CNC machined billet aluminum spacer included for 1978-1981 frames
• 5 position CNC machined billet aluminum transmission mount
• Two transmission bushing mount options (sold separately)
• Laser cut tab and slot design is lightweight and strong
• Large cutouts to fit oversized dual exhaust systems

Upgrade the drivetrain installation in your 1978-1988 GM G-Body with the UMI Performance 3108-B Modular Adjustable Transmission Crossmember. Designed for strength, adjustability, and practical exhaust clearance, this crossmember provides a reliable mounting solution for a variety of transmission configurations. Its modular construction allows you to fine-tune the driveline angle while supporting a clean, professional installation.
The laser-cut tab-and-slot design combines lightweight construction with durable support, while large clearance cutouts provide room for oversized dual exhaust systems. A five-position CNC-machined billet aluminum transmission mount gives you multiple mounting locations for improved alignment and setup flexibility. The crossmember is finished in black for a clean appearance and long-lasting protection in demanding street or performance applications.
A CNC-machined billet aluminum spacer is included for 1978-1981 frames, helping ensure proper fitment across the applicable GM G-Body chassis range. The system supports two transmission bushing mounting options, which are sold separately, allowing you to tailor the installation to your specific drivetrain requirements. This UMI Performance crossmember is designed for enthusiasts who need dependable transmission support without sacrificing exhaust clearance or adjustment capability.
This crossmember fits select 1978-1988 GM G-Body applications, including Pontiac Grand Prix models from 1981 through 1984. Verify the vehicle, frame, transmission, and bushing requirements before installation. The total brace weight is approximately 22 pounds. This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm.

Features:

• Application: Fits select 1978-1988 GM G-Body vehicles, including 1981-1984 Pontiac Grand Prix models

• Adjustability: Five-position CNC-machined billet aluminum transmission mount allows driveline angle adjustment

• Construction: Laser-cut tab-and-slot design provides a strong, lightweight modular crossmember

• Frame Compatibility: CNC-machined billet aluminum spacer included for 1978-1981 frames

• Exhaust Clearance: Large cutouts accommodate oversized dual exhaust systems

• Bushing Options: Supports two transmission bushing mounting options, sold separately

• Finish: Durable black finish for a clean appearance and added protection

• Brand and Part Number: UMI Performance 3108-B

Fitment:
Buick Regal Base 1978
Buick Regal Base 1979
Buick Regal Base 1980
Buick Regal Base 1981
Buick Regal Base 1982
Buick Regal Base 1983
Buick Regal Base 1984
Buick Regal Base 1985
Buick Regal Base 1986
Buick Regal Base 1987
Buick Regal Estate Wagon 1982
Buick Regal Estate Wagon 1983
Buick Regal GNX 1987
Buick Regal Grand National 1984
Buick Regal Grand National 1985
Buick Regal Grand National 1986
Buick Regal Grand National 1987
Buick Regal Limited 1978
Buick Regal Limited 1979
Buick Regal Limited 1980
Buick Regal Limited 1981
Buick Regal Limited 1982
Buick Regal Limited 1983
Buick Regal Limited 1984
Buick Regal Limited 1985
Buick Regal Limited 1986
Buick Regal Limited 1987
Buick Regal Limited Turbo 1982
Buick Regal Sport 1978
Buick Regal Sport 1979
Buick Regal Sport 1980
Buick Regal Sport 1981
Buick Regal Sport 1982
Buick Regal T-Type 1983
Buick Regal T-Type 1984
Buick Regal T-Type 1985
Buick Regal T-Type 1986
Chevrolet El Camino Base 1978
Chevrolet El Camino Base 1979
Chevrolet El Camino Base 1980
Chevrolet El Camino Base 1981
Chevrolet El Camino Base 1982
Chevrolet El Camino Base 1983
Chevrolet El Camino Base 1984
Chevrolet El Camino Base 1985
Chevrolet El Camino Base 1986
Chevrolet El Camino Base 1987
Chevrolet El Camino Conquista 1978
Chevrolet El Camino Conquista 1981
Chevrolet El Camino Conquista 1982
Chevrolet El Camino Conquista 1983
Chevrolet El Camino Conquista 1984
Chevrolet El Camino Conquista 1985
Chevrolet El Camino Conquista 1986
Chevrolet El Camino Royal Knight 1979
Chevrolet El Camino Royal Knight 1980
Chevrolet El Camino Royal Knight 1981
Chevrolet El Camino SS 1978
Chevrolet El Camino SS 1979
Chevrolet El Camino SS 1980
Chevrolet El Camino SS 1981
Chevrolet El Camino SS 1982
Chevrolet El Camino SS 1983
Chevrolet El Camino SS 1984
Chevrolet El Camino SS 1985
Chevrolet El Camino SS 1986
Chevrolet El Camino SS 1987
Chevrolet Malibu Base 1978
Chevrolet Malibu Base 1979
Chevrolet Malibu Base 1980
Chevrolet Malibu Base 1981
Chevrolet Malibu Classic 1978
Chevrolet Malibu Classic 1979
Chevrolet Malibu Classic 1980
Chevrolet Malibu Classic 1981
Chevrolet Malibu Classic 1982
Chevrolet Malibu Classic 1983
Chevrolet Malibu Classic Estate 1978
Chevrolet Malibu Classic Estate 1979
Chevrolet Malibu Classic Estate 1980
Chevrolet Malibu Classic Landau 1978
Chevrolet Malibu Classic Landau 1979
Chevrolet Malibu Classic Landau 1980
Chevrolet Malibu Classic Landau 1981
Chevrolet Malibu Classic Sport 1979
Chevrolet Malibu Classic Sport 1980
Chevrolet Malibu Estate 1979
Chevrolet Malibu Estate 1980
Chevrolet Malibu Landau 1979
Chevrolet Malibu Police 1979
Chevrolet Malibu Sport 1979
Chevrolet Malibu Sport 1980
Chevrolet Monte Carlo Base 1979
Chevrolet Monte Carlo Base 1981
Chevrolet Monte Carlo Base 1982
Chevrolet Monte Carlo Base 1983
Chevrolet Monte Carlo Base 1984
Chevrolet Monte Carlo Base 1985
Chevrolet Monte Carlo Base 1986
Chevrolet Monte Carlo Base 1987
Chevrolet Monte Carlo Base 1988
Chevrolet Monte Carlo CL 1983
Chevrolet Monte Carlo Landau 1978
Chevrolet Monte Carlo Landau 1979
Chevrolet Monte Carlo Landau 1980
Chevrolet Monte Carlo Landau 1981
Chevrolet Monte Carlo LS 1986
Chevrolet Monte Carlo LS 1987
Chevrolet Monte Carlo LS 1988
Chevrolet Monte Carlo Sport 1978
Chevrolet Monte Carlo Sport 1980
Chevrolet Monte Carlo SS 1983
Chevrolet Monte Carlo SS 1984
Chevrolet Monte Carlo SS 1985
Chevrolet Monte Carlo SS 1986
Chevrolet Monte Carlo SS 1987
Chevrolet Monte Carlo SS 1988
GMC Caballero Amarillo 1981
GMC Caballero Amarillo 1982
GMC Caballero Amarillo 1983
GMC Caballero Amarillo 1984
GMC Caballero Amarillo 1985
GMC Caballero Amarillo 1986
GMC Caballero Base 1978
GMC Caballero Base 1979
GMC Caballero Base 1980
GMC Caballero Base 1981
GMC Caballero Base 1982
GMC Caballero Base 1983
GMC Caballero Base 1984
GMC Caballero Base 1985
GMC Caballero Base 1986
GMC Caballero Base 1987
GMC Caballero Conquista 1981
GMC Caballero Diablo 1978
GMC Caballero Diablo 1979
GMC Caballero Diablo 1980
GMC Caballero Diablo 1981
GMC Caballero Diablo 1982
GMC Caballero Diablo 1983
GMC Caballero Diablo 1984
GMC Caballero Diablo 1985
GMC Caballero Diablo 1986
GMC Caballero Diablo 1987
GMC Caballero Laredo 1978
GMC Caballero Laredo 1979
GMC Caballero Laredo 1980
GMC Caballero Royal Knight 1981
Oldsmobile Cutlass Base 1980
Oldsmobile Cutlass Brougham 1980
Oldsmobile Cutlass Brougham 1981
Oldsmobile Cutlass LS 1980
Oldsmobile Cutlass LS 1981
Oldsmobile Cutlass Vista Cruiser 1978
Oldsmobile Cutlass Vista Cruiser 1979
Oldsmobile Cutlass Vista Cruiser Brougham 1979
Oldsmobile Cutlass Calais Base 1978
Oldsmobile Cutlass Calais Base 1979
Oldsmobile Cutlass Calais Base 1980
Oldsmobile Cutlass Calais Base 1981
Oldsmobile Cutlass Calais Base 1982
Oldsmobile Cutlass Calais Base 1983
Oldsmobile Cutlass Calais Base 1984
Oldsmobile Cutlass Calais Hurst 1983
Oldsmobile Cutlass Calais Hurst 1984
Oldsmobile Cutlass Ciera Base 1982
Oldsmobile Cutlass Ciera Base 1983
Oldsmobile Cutlass Ciera Base 1988
Oldsmobile Cutlass Ciera Brougham 1982
Oldsmobile Cutlass Ciera Brougham 1983
Oldsmobile Cutlass Ciera Brougham 1984
Oldsmobile Cutlass Ciera Brougham 1985
Oldsmobile Cutlass Ciera Brougham 1986
Oldsmobile Cutlass Ciera Brougham 1987
Oldsmobile Cutlass Ciera Brougham 1988
Oldsmobile Cutlass Ciera Cruiser LS 1984
Oldsmobile Cutlass Ciera Cruiser LS 1985
Oldsmobile Cutlass Ciera ES 1983
Oldsmobile Cutlass Ciera ES 1985
Oldsmobile Cutlass Ciera ES 1986
Oldsmobile Cutlass Ciera GT 1985
Oldsmobile Cutlass Ciera GT 1986
Oldsmobile Cutlass Ciera GT 1987
Oldsmobile Cutlass Ciera Holiday 1985
Oldsmobile Cutlass Ciera Holiday 1986
Oldsmobile Cutlass Ciera International 1988
Oldsmobile Cutlass Ciera LS 1982
Oldsmobile Cutlass Ciera LS 1983
Oldsmobile Cutlass Ciera LS 1984
Oldsmobile Cutlass Ciera LS 1985
Oldsmobile Cutlass Ciera LS 1986
Oldsmobile Cutlass Ciera LS 1987
Oldsmobile Cutlass Ciera LS 1988
Oldsmobile Cutlass Ciera S 1986
Oldsmobile Cutlass Ciera S 1987
Oldsmobile Cutlass Ciera S 1988
Oldsmobile Cutlass Ciera SL 1986
Oldsmobile Cutlass Ciera SL 1987
Oldsmobile Cutlass Ciera SL 1988
Oldsmobile Cutlass Cruiser Base 1980
Oldsmobile Cutlass Cruiser Base 1981
Oldsmobile Cutlass Cruiser Base 1982
Oldsmobile Cutlass Cruiser Base 1983
Oldsmobile Cutlass Cruiser Brougham 1980
Oldsmobile Cutlass Cruiser Brougham 1981
Oldsmobile Cutlass Salon 442 1978
Oldsmobile Cutlass Salon 442 1979
Oldsmobile Cutlass Salon 442 1985
Oldsmobile Cutlass Salon 442 1986
Oldsmobile Cutlass Salon Base 1978
Oldsmobile Cutlass Salon Base 1979
Oldsmobile Cutlass Salon Base 1980
Oldsmobile Cutlass Salon Base 1985
Oldsmobile Cutlass Salon Base 1986
Oldsmobile Cutlass Salon Base 1987
Oldsmobile Cutlass Salon Brougham 1978
Oldsmobile Cutlass Salon Brougham 1979
Oldsmobile Cutlass Salon Brougham 1980
Oldsmobile Cutlass Salon Hurst 1979
Oldsmobile Cutlass Supreme 442 1987
Oldsmobile Cutlass Supreme Base 1978
Oldsmobile Cutlass Supreme Base 1979
Oldsmobile Cutlass Supreme Base 1980
Oldsmobile Cutlass Supreme Base 1981
Oldsmobile Cutlass Supreme Base 1982
Oldsmobile Cutlass Supreme Base 1983
Oldsmobile Cutlass Supreme Base 1984
Oldsmobile Cutlass Supreme Base 1985
Oldsmobile Cutlass Supreme Base 1986
Oldsmobile Cutlass Supreme Base 1987
Oldsmobile Cutlass Supreme Base 1988
Oldsmobile Cutlass Supreme Brougham 1978
Oldsmobile Cutlass Supreme Brougham 1979
Oldsmobile Cutlass Supreme Brougham 1980
Oldsmobile Cutlass Supreme Brougham 1981
Oldsmobile Cutlass Supreme Brougham 1982
Oldsmobile Cutlass Supreme Brougham 1983
Oldsmobile Cutlass Supreme Brougham 1984
Oldsmobile Cutlass Supreme Brougham 1985
Oldsmobile Cutlass Supreme Brougham 1986
Oldsmobile Cutlass Supreme Brougham 1987
Oldsmobile Cutlass Supreme Classic 1988
Oldsmobile Cutlass Supreme Classic Brougham 1988
Oldsmobile Cutlass Supreme Indy 500 Pace Car 1988
Oldsmobile Cutlass Supreme International 1988
Oldsmobile Cutlass Supreme LS 1981
Oldsmobile Cutlass Supreme LS 1985
Oldsmobile Cutlass Supreme SL 1988
Pontiac Bonneville Base 1982
Pontiac Bonneville Base 1983
Pontiac Bonneville Base 1984
Pontiac Bonneville Base 1985
Pontiac Bonneville Base 1986
Pontiac Bonneville Brougham 1982
Pontiac Bonneville Brougham 1983
Pontiac Bonneville Brougham 1984
Pontiac Bonneville Brougham 1985
Pontiac Bonneville Brougham 1986
Pontiac Bonneville LE 1984
Pontiac Bonneville LE 1985
Pontiac Bonneville LE 1986
Pontiac Grand Prix Base 1978
Pontiac Grand Prix Base 1979
Pontiac Grand Prix Base 1980
Pontiac Grand Prix Base 1981
Pontiac Grand Prix Base 1982
Pontiac Grand Prix Base 1983
Pontiac Grand Prix Base 1984
Pontiac Grand Prix Base 1985
Pontiac Grand Prix Base 1986
Pontiac Grand Prix Base 1987
Pontiac Grand Prix Brougham 1981
Pontiac Grand Prix Brougham 1982
Pontiac Grand Prix Brougham 1983
Pontiac Grand Prix Brougham 1984
Pontiac Grand Prix Brougham 1985
Pontiac Grand Prix Brougham 1986
Pontiac Grand Prix Brougham 1987
Pontiac Grand Prix LE 1984
Pontiac Grand Prix LE 1985
Pontiac Grand Prix LE 1986
Pontiac Grand Prix LE 1987
Pontiac Grand Prix LJ 1978
Pontiac Grand Prix LJ 1979
Pontiac Grand Prix LJ 1980
Pontiac Grand Prix LJ 1981
Pontiac Grand Prix LJ 1982
Pontiac Grand Prix LJ 1983
Pontiac Grand Prix SJ 1978
Pontiac Grand Prix SJ 1979
Pontiac Grand Prix SJ 1980