Hey my name is scott I have been donated a running 1991 town car with the 5.0 engine. I know it's not the HO but looks just like my 91 mustang motor I used to have . My questions are does anyone know if this is just a detuned 5.0 ? If so what's the difference? Heads the same? Do mustang 5.0 parts interchange? Are the computers similar? Wiring harness? Cam? Can the computer be tuned or switched with a mustang computer? I ask cause I'm looking to pull it and put it in my 1956 ford f100. I got it for free and thought it would make a good donor motor. I'm was planning on pulling the wiring harness and computer to eventually build a efi 5.0 twin turbo motor running low boost 8psi. If this motor is not basically the same as the mustang 5.0 I didn't want to waste my time or money building it. Any info you might have or suggestions would be appreciated!! Thanks

 

The towncar motor made all of 150hp so the only parts it shares with the Mustang were the block, crank and con rods.. everything else is different. The lopo 5.0 got E6 heads.. one of the worst castings every produced, a tiny flat tappet cam, a restrictive intake, cast pistons, and 14lb injectors. Strip it bare and replace all those parts and you would have something but you would be much further ahead with a 5.0 from an Explorer, that motor has much better heads and intake than the HO and a stock roller cam, the only thing it doesn't have that you would need is forged pistons but that's a minor cost compared to replacing the whole topend of the motor.

 

Hey thanks for the information Conan you saved me from making a lot of extra work for myself!! Is there a good year or years of the explorer to look for? Also do you know if the computer and harness can be removed from the explorer like the mustangs can? Thanks again

 

Ex. from 1996 and part of 1997 got GT40 heads, later Ex got GT40P heads.
You can look up the difference between the two versions.

 

Just to correct one thing, his 5.0, if that's what it is, cause I'm thinking the 91 Towncars were the first application of the 4.6 SOHC motor anyhow, a 91 5.0 would be a roller cammed engine, not a flat tappet motor.

 

Oh I forgot about the 4.6, I know it was introduced real early in the Crown Vic... somewhere around '91, and I thought the Towncar followed suit, but I also thought the only Lincoln to get anything besides the LoPo 5.0 was the 2-door sport coupe known as the LSC.

 

The Vic's got the 4.6 in 92. The towncars got em in 91

 

The Lincoln Mark VII from 1988 up had the 5.0L HO. The LSC got the Hipo '87 and prior tho