UMI Performance part number 4008 allows LS power to be installed in 1968 to 1972 GM A-Body vehicles. The mounts place the LS engine in the factory small-block and big-block location, with the ability to move the engine rearward up to 3/4 inch or forward 1/4 inch. The brackets bolt directly to the frame and the LS block with no modification. Strong 1/4 inch plate and double-shear brackets handle the power an LS can produce. Greaseable polyurethane engine mounts are built in to dampen vibration while keeping a crisp, performance feel, which removes the need to buy separate engine mounts. New high-grade mounting hardware is included. It is finished in gloss black powder coat and is crafted in Philipsburg, Pennsylvania, in the USA.
Specifications:
- Application: LS and LSX engine swap motor mounts
- Engine placement: Factory SBC/BBC location, adjustable up to 3/4 in rearward and 1/4 in forward
- Construction: 1/4 in plate with double-shear brackets
- Mounts: Built-in greaseable polyurethane engine mounts
- Installation: Bolts to the frame and LS block, no modification required
- Hardware: New high-grade mounting hardware included
- Finish: Gloss black powder coat
- Made in the USA
- Part number: 4008-B
Vehicle Applications:
- 1971 Buick GS
- 1972 Buick GS
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
- 1968 Chevrolet Chevelle
- 1969 Chevrolet Chevelle
- 1970 Chevrolet Chevelle
- 1971 Chevrolet Chevelle
- 1972 Chevrolet Chevelle
- 1968 Chevrolet El Camino
- 1969 Chevrolet El Camino
- 1970 Chevrolet El Camino
- 1971 Chevrolet El Camino
- 1972 Chevrolet El Camino
- 1970 Chevrolet Monte Carlo
- 1971 Chevrolet Monte Carlo
- 1972 Chevrolet Monte Carlo
- 1968 Oldsmobile 442
- 1969 Oldsmobile 442
- 1970 Oldsmobile 442
- 1971 Oldsmobile 442
- 1968 Oldsmobile Cutlass
- 1969 Oldsmobile Cutlass
- 1970 Oldsmobile Cutlass
- 1971 Oldsmobile Cutlass
- 1972 Oldsmobile Cutlass
- 1968 Oldsmobile F85
- 1969 Oldsmobile F85
- 1970 Oldsmobile F85
- 1971 Oldsmobile F85
- 1972 Oldsmobile F85
- 1968 Pontiac GTO
- 1969 Pontiac GTO
- 1970 Pontiac GTO
- 1971 Pontiac GTO
- 1972 Pontiac GTO
- 1968 Pontiac LeMans
- 1969 Pontiac LeMans
- 1970 Pontiac LeMans
- 1971 Pontiac LeMans
- 1972 Pontiac LeMans
FAQ
What vehicles do the UMI 4008 LS swap motor mounts fit?
They fit 1968 to 1972 GM A-Body vehicles such as the Chevrolet Chevelle, El Camino, and Monte Carlo, Buick Skylark and GS, Oldsmobile Cutlass, 442, and F85, and Pontiac GTO and LeMans. See the vehicle applications list for the exact years.
Is any modification required to install these mounts?
No. The brackets bolt directly to the frame and to the LS block with no modification, and new high-grade mounting hardware is included.
Can the engine position be adjusted?
Yes. The mounts place the LS engine in the factory small-block and big-block location and allow it to move rearward up to 3/4 inch or forward 1/4 inch.
Do I need to buy separate engine mounts?
No. Greaseable polyurethane engine mounts are built into the brackets, so no additional engine mounts are needed.
What is the difference between part numbers 4008-R and 4008-B?
Only the finish. 4008-R has a red powder coat and 4008-B has a gloss black powder coat. The brackets, poly mounts, hardware, and fitment are identical.

