Hello, my friend owns two mustangs 1989 "gt", and a 1991 lx 5.0. After purchasing the 1989 "gt" he quickly came to find out that there was a severe lack in power coming from the "new" 5.0. Well turns out it is a new 5.0, however it is a Crown Victoria non-ho 5L with bbk shorties, 2.5" exhaust to 3 chamber flows, new transmission. He is needing to sell the 91 LX which needs a lot of bodywork, interior work, suspension work etc. in order to repay his dad for the 89 gt (perfect body, interior, and 04 cobra wheels) he bought yesterday for 2200 (we also believe that the car was a 4cyl converted appearance wise to a gt). Since it was a person to person transaction there is no way that he can simply return it to a dealer or w/e. If we were to swap the Heads, cam, intake, tb, and mass air from the 91 lx 5.0 what would we need to do to make it run. Is it as simple as unplugging the crown vic's ecu and plugging up the HO computer from 91? also we dont know the year of the engine in the 89 "gt", but we do know its a non-ho. I also know that the firing order is different from the non-ho (standard) to the HO (351 style) also the internals are different, but temporarily that is fine, we just want to make at least the 225 hp 300 tq he was expecting. I have tried to do my homework on this, but keep coming up short, and time is of the essence. Our other option is to simply swap the drivetrains from one car to the other, but will the wiring harness be the same, with the only difference being the computer? what about vacuum? fuel? money is also a concern and if there is anything else worth switching. I will check this frequently, any thoughts/comments would be extremely helpful to attempt to rectify this crappy situation!!
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1965 mustang coupe all original 200ci I-6 (broke college student... im workin on it lol)
top end will swap straight over. the thing is, the HO is a roller block and will have threaded holes to retain the lifter "spider" that holds the roller lifters in the correct orientation. i would just transfer the LX engine to the "GT"
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top end will swap straight over. the thing is, the HO is a roller block and will have threaded holes to retain the lifter "spider" that holds the roller lifters in the correct orientation. i would just transfer the LX engine to the "GT"
I totally agree with this, in my oppinion you do not get the higher rpm capabilities with a non rollerblock as you do a roller and the no ho motors most likely have a smaller cam, not to mention the ho since 1985 has had trw forged pistons, tell your buddy to swapmotors they wire up the same as long as the non ho still has the mustang upper intake otherwise the throttlebody will be on the wrongside along with the wiring harness for the tps and iac and egr.
To make anythign close to what he wants you will have to swap the full motor. Since the firing order is different, if you do a Cam swap (which would be needed) you would have to swap cranks as well. So, baiscally, entire motor and ECU.
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2006 Mustang GT in Torch Red
C&L Intake, Evolution Performance Tune, Borla Axle Backs, Hurst Shifter, 4.10's, JBA Long Tubes, Prothane Engine Mounts, Steeda UDPs, FRPP Charge Motion Delete Plates
i am getting mixed messages here. I need to know weather the ECU from the vic is the same as that from the mustang. I dont believe so, but im not gettin that info. I believe the ECU from the stang to be EEC IV wich is different. i have both, what do i need to swap. HELP!!!!!
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1965 mustang coupe all original 200ci I-6 (broke college student... im workin on it lol)
The Non-Ho's are basically the '86 Mustang HO motor with a wimpy cam (It IS a roller though), that uses the standard 289/302 firing order, 17lb injectors and cast versions of the '86 flat-top piston.
You can swap the HO cam and 19 lb injectors in, and using the Mustang electronics, have what amounts to an '86 HO motor (200HP/285 TQ), or you can swap the better intake and TB from the '87-'93 HO, along with the E7 heads and probably make a hair more power than a stock Mustang HO motor, due to slightly higher compression.
if you do swap the E7's, you MUST check piston to valve clearence, it's 50/50 whether the valves will clear the '86 style piston or not.
Whether a 5.0L engine is H.O. or S.O. (standard output) matters none, they both had the same crankshaft.
Maybe I am missing somethign here... how can the firing order be different if the Crank is the same? How would the same cank have th piston at the top of the stoke on the same cylinders with different firing orders?
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2006 Mustang GT in Torch Red
C&L Intake, Evolution Performance Tune, Borla Axle Backs, Hurst Shifter, 4.10's, JBA Long Tubes, Prothane Engine Mounts, Steeda UDPs, FRPP Charge Motion Delete Plates
Maybe I am missing somethign here... how can the firing order be different if the Crank is the same? How would the same cank have th piston at the top of the stoke on the same cylinders with different firing orders?
the firing order depends on the cam, and which valve is open on which cylinder. the difference between ho and non ho, is only in the cam. as you know there is more than one piston at top dead center at once. the firing order is the only thing different.
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Sr. Master Ford nerd.
saludos caballeros del ovalo azul
If you put the 91 ho motor into the 89 mustang the computer should work as long as the cars are both automatics or both 5-speed cars or the 91 is a 5-speed car and the 89 will be an automatic. I read somewhere that an automatic transmission computer will not work in a 5-speed car. Or you might have to go the salvage yard route. I know a few years ago summit used to sell a complete mass air conversion kit for 550-600 dollars if you need parts but pricey if your on a budget.
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1990 Mustang gt
5-Speed
Flowtech headers
40 Series Flowmaster Mufflers
working ashtray lid
hey guys the mustang that is being referred to is actually mine. i just now got an account on here and the guy typing is actually my best friend that is helping me with the project. the 2 mustangs are both AOD tranny's so they will be fine i think.. the only thing that i have been told i will need to change out is the wiring harness, but thats a no brainer. any suggestions on how to make this swap easy or personal experiences would be greatly appreciated thanks.
to clarify, we ARE going to swap to avoid bottom end problems down the road when we get into boost etc... as he said both are 5.0 aod... the motor is not out of a crown vic (as was stated earlier) as the intake manfold opens to the left as does the mustang 5.0. Neither of us have done any sort of engine swap/removal/install before, so even no brainer stuff would be appreciated, or anything to avoid headaches. We'll be starting the project in less then a week, so anything we need to know will be greatly appreciated.
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1965 mustang coupe all original 200ci I-6 (broke college student... im workin on it lol)
hi? does you how hard is it to convert v6 to 5.0???? is it worth it?? i just bought a really nice 86 v6. i want to make it into a 5.0. where would i start
Hiya. I'm sure this post will be moved by one of our moderators to give your question the exposure it deserves. But swapping an 86 over to a 5.0 is rather simple but the 86 didn't come with a V6, it had a 2.3 4 cylinder. But yes, it's rather simple and parts are very easy to find.
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How to convert a non HO 5.0 to HO 
