engine swap

[dommo2007]

I have tried to search the forums for threads regarding engine swaps, but I really only find stuff about efi to carb, or diesel swaps, etc. Can someone please point me towards a good thread about swaping the 5.8l in for the 5.0? Will the 5.0 computer work with the 5.8? Tell me its that simple...lol.

 

[vincendebbie]

I have tried to search the forums for threads regarding engine swaps, but I really only find stuff about efi to carb, or diesel swaps, etc. Can someone please point me towards a good thread about swaping the 5.8l in for the 5.0? Will the 5.0 computer work with the 5.8? Tell me its that simple...lol.

Not that simple. You will need the PCM from a 5.0 unit along with the wiring harness. If you are running an automatic tranny you will have to make sure the PCM used will support that tranny. There are quite a bit of little stuff that needs to be looked at.

I personally prefere the carb. I am in the process of putting a carborated 351 in my 93XLT. I removed an EFI 5.0 and will be using the same PCM but only to run the guages. I put an inline fuel pump with regulator on the inside of the frame rail under the drivers door. I am running a TCI Maximizer tranny (no computer needed, manual valve body) with manual hard shift instead of push button 4x4. I custom built my wiring harness using the factory one as a guide and will have Summit distributor along with Summit ignition box. The intake is Summit racing along with Edelbrock 650cfm carb. I did install a mild cam along with high volume oil pump. If you still want to go with the EFI set up I will help as much as I can. I do work for FORD and I know a little about it. (LOL). Hope this helps. --Vince

 

[shift1313]

do the 5.0 and 5.8 share the same bell housing bolt pattern? I didnt think so but im not sure.

 

[vincendebbie]

do the 5.0 and 5.8 share the same bell housing bolt pattern? I didnt think so but im not sure.

the 351w and 302 are the same

 

[Seabronc]

I'm not sure from reading your post if you now have a 5.0 and are going to a 5.8 or in the opposite direction. In either case mounts are the same and the transmission bell housing is the same but you will need the computer and harness for the engine you are putting in .

Good luck,

>-

 

[shift1313]

the 351w and 302 are the same

thats right, 351c is what i was thinking for some reason. windsor is still a small block

 

[dommo2007]

I am sorry, I should have explained better...I have the 5.0 and would like to swap in a 351w. The main reason I am thinking of doing this swap is because I found a 5.8l with like 70k orig. miles, awesome shape, plus a bunch of goodies already installed. I really dont know jack about engines...I can do a basic tune up, but beyond that, I will take it to a shop, so I was really just trying to get an idea how much additional money I will be spending on other crap I would need to buy for the swap(not counting the labor). Now my 5.0 is in great shape, about 107k, runs great...would it be a better idea to modify my existing engine, as there is only what, like 5-10 hp difference stock? If I would save myself butt loads of money, I would be happy to add some junk to this engine, and rebuild it when ever it finally becomes necessary.

Vincendebbie...or anyone else for that matter: Why do you prefer the carb engine to the EFI? (keep in mind, before you respond that I dont know jack about engines...lol) I live in Co. and I was always under the impression that carburated engines were a pain in the butt at high alttitude. I thought you generally got better mileage with FI as well, assuming everything is working right. Anyways, pardon the dumb questions, but any advice is great. Also, if anyone knows of a good 5.0 for 5.8 engine swap thread, PLEASE post up the link, because I cant find anything.

 

[shift1313]

i personally would keep the 5.0. If your 5.0 was junk and you had the 5.8 then maybe but if both are in good shape and we are only talking a 37k difference in miles i see a lot of wasted money.

Personally I prefer carbs over FI on these trucks. Carbs are simple, much less to go wrong and the ecu has little to no control over things. I dont know that there is really an issue with carb jetting at high alt. I think the problem comes when driving from low alt to high alt. If the FI setup has a baro sensor or something to monitor this(all do that i know of unless you convert to alpha-N) it will adjust for the change. There are carbs that will do this too but i think you need to get pretty extreme with alt. changes to make a difference on a truck(dont know from experience though).

 

[vincendebbie]

i personally would keep the 5.0. If your 5.0 was junk and you had the 5.8 then maybe but if both are in good shape and we are only talking a 37k difference in miles i see a lot of wasted money.
Personally I prefer carbs over FI on these trucks. Carbs are simple, much less to go wrong and the ecu has little to no control over things. I dont know that there is really an issue with carb jetting at high alt. I think the problem comes when driving from low alt to high alt. If the FI setup has a baro sensor or something to monitor this(all do that i know of unless you convert to alpha-N) it will adjust for the change. There are carbs that will do this too but i think you need to get pretty extreme with alt. changes to make a difference on a truck(dont know from experience though).

Shift is right, carb does not give you as much trouble due to no computer having to adjust. Jetting troubles usually occurr when you leave from the Southern Regions of the states and head North.

If you have a good 5.0 keep it and run it till it drops. If you still want to put the 5.8 and stay with the FI set up I do have a PCM out of my 94 that is set up for 5.8 with auto tranny. I am currently switching my 93 XLT from FI 5.0 to carb 351W. They have more torque and the carb makes it easy to work on. I am putting the biggest cam in that I can without having to do head work along with high volume oil pump and rattle timing gears. Remember the carb engine does not go through the PCM and will cause the check engine light to come on. Also you only need about 7 wires to run the carb motor. You can leave the PCM in to run your guages and other equipment. My tranny has a manual valve body so it also does not need the support of the PCM. All of my other stuff works perfectly. --Vince

 

[BB33's]

I'm on my second EFI Bronco, the first being a 5.slow and current being a 5.8 and while the 5.8 makes a difference, once you put a k&N and Flowmaster on a 5.0 the power difference becomes much less noticeable. My ABC's of moddin' a 5.0 is this

1. K&N Intake kit

2. Aftermarket cat and muffler

3. Computer Chip

The intake and exhaust will get that thing breathin' better and work even better with a chip installed. All these would probably add 40 HP and make a big difference.