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YES it will fit right in. But now hears the problem that you will have.
The 91 is a fuel injected computer controlled engine and the 86 is not. Therefore you would need the entire wiring harness and computer plus the fuel pump that's in the 91 fuel tank. You will run into all kinds of problems trying to get the 91 engine to run in that 86 truck. It would be cheaper and easyer to get a carburatored engine and put it back in the 86 truck.
What else can I help you with?
What is the horsepower a 1986 Chevy 454 truck engine?
230 HP@3800 RPM
Can you put a 1986 Chevy truck front clip on a 1980 Chevy truck?
yes they are the same.
Does 1986 Chevy truck have a computer?
YES it does.
Fuel pump location 1986 Chevy C-20 pick up truck?
standing in the front of the engine, It will be on the left front bottom SIDE of the engine.
What is the towing capacity of a 1986 Chevy truck?
help
What is the firing order for a 1986 Chevy truck?
1,8,4,3,6,5,7,2
How many bolts are in the bell housing of a transmission for a 1986 Chevy truck 4x4 with 305 motor?
There are 6 bolts that holds the transmission to the engine.
What is the horse power a 1986 Chevy 454 truck engine?
Advertised Horsepower is 230 HP @ 3800 RPMs. With a 4-barrel carb.
What is the horsepower of a 1986 Chevy pickup with a 305 motor?
the 1986 Chevy truck 305 HO produced 180 hp
Will 1986 Chevy truck parts fit on a 1988?
NO. 1988 is when chevy changed everything.
Can you put a 1986 Chevy truck front clip on a 1979 Chevy truck?
No, Nothing will line up are even match up.
Where is the ignition coil on a 1986 Chevy silverado pickup truck?
no
