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1975 - 1987 SBC Vehicle to LS Swap Engine Mount Adapter - Stock Position

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LS Engine Swap Mounting Brackets

These brackets allow a LS series engine to be bolted into a vehicle that originally had a small block chevy engine

  • Compatible with the use of 1975-1987 OEM style rubber frame mounts (sbc engine used clamshell style mounts) (1988 and up will not work with these swap adapters)
  • Made with OEM specifications for the best possible fitment into your vehicle
  • These plates will position your LS engine crankshaft in the EXACT location that the SBC crankshaft was in (factory transmission location)
  • Made from steel
  • Includes: 2 engine mount upper adapter plates and mounting hardware
  • Powdercoated Black finish
  • See our other listings for all your LS swap needs. Check out our "Tips and Guides" section on our page

1975-1987 small block chevy clamshells have a recessed triangle on the bottom of the clamshell (recessed away from the engine when bolted on)

1988-2002 small block chevy clamshells have a protruding triangle on the bottom of the clamshell (protruding towards the engine when bolted on)

More Information

Bullet Point 1 Replace your SBC engine and put a LS engine in its exact same bellhousing and crankshaft location
Bullet Point 2 Allows your factory transmission to remain in the same factory position
Bullet Point 3 Heavy duty 3/8" thick mounts rated for vehicles up to 2,500hp
Bullet Point 4 Black powder coat finish for long lasting protection
Bullet Point 5 Includes mounting bolts
Manufacturer Part Number 551928
UPC 657814754096
Weight 5.143000
ICT Manufacturer ICT Billet
United States United States
Length Inches 10
Width Inches 4
Height Inches 4
Download .PDF for Vehicle No

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


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.