The 1986 Chevy El Camino came standard with a 305 cubic-inch V8 engine. However, it is possible to fit a 454 cubic-inch V8 engine into the El Camino with some modifications. The most important modification is to the engine mounts. The 454 engine is larger and heavier than the 305 engine, so the engine mounts must be modified to support the additional weight. Other modifications that may be necessary include:
* Replacing the transmission
* Replacing the driveshaft
* Modifying the exhaust system
* Modifying the fuel system
* Modifying the cooling system
It is important to note that fitting a 454 engine into a 1986 Chevy El Camino is not a simple task and it may be best left to a professional.