Dirty Dingo adjustable engine mounts are designed for installing a Gen III or Gen IV LS engine into 1988–1999 4X4 OBS Chevy and GMC trucks.

Each mount is CNC laser-cut from 1/4-inch-thick 1050 high-carbon, cold-rolled steel. The mounts are formed with a precision CNC press brake and a large-radius die. This process helps reduce stress at the bends and creates a strong, reliable mount.

The slotted design allows you to adjust the engine position inside the engine bay. The engine can move up to 2 1/2 inches forward or 1/2 inch rearward from the factory bellhousing position. Once properly tightened, the mounts hold the engine securely, even in high-horsepower applications.

These mounts work with the factory rubber clamshell-style mounts on the truck’s frame. They can be used with many manual and automatic transmissions, including:

Powerglide, TH350, TH400, TH700R4, 4L60E, 4L65E, 4L70E, and 4L80E, 6L80-90, 8L80-90, 10L80-90.

Each kit includes a driver-side mount, passenger-side mount, new cross bolts, and high-quality Grade 8 zinc-coated hardware.

Important Information

• Sold as a pair: driver and passenger side.
• “D” marks the driver-side mount.
• “P” marks the passenger-side mount.
• The arrows must point toward the front of the truck.
• Mounts are raw steel and are not painted.
• Will not fit Dart aftermarket engine blocks.

A/C and Alternator Fitment

These mounts will clear the factory LS truck low-mount A/C compressor. However, the engine will not be able to slide rearward because the mounts will contact the A/C compressor bracket. This places the engine about 2 1/2 inches forward from the original bellhousing position.

These mounts will not work with Corvette, Camaro, or GTO low-mount A/C systems.

A 1998–2002 Camaro low-mount alternator setup may work in some applications, but engine adjustment may be limited.

1988–1991 Blazer and Suburban Fitment

1988–1991 square-body Blazers and Suburbans will require a small notch in the driver-side crossmember for proper clearance.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.

STEEL (steel bolts): Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.