You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
You have no idea how much is involved in a swap do you? But to answer your question I belive you just have to swap out the bellhousing. Guys correct me if I'm wrong.
[align=left]i think u can get away with the bellhousing. anyone thats gonna ask a question like that has no idea what all is involved in changing a v6 into a v8. someone needs to sticky a list or something cuz this question gets asked every day.
found this on another forum: and i wanna say theres more stuff that has to be changed than whats on this list too. its NOT an easy swap and unless you have a donor car your crazy for wanting to do this.
Originally Posted by TennesseeMustangPerf [/align] I am swapping out my fiancee's 1994 Mustang 3.8L with a 4.6L V8, and unfortunately there is not a lot of information on this swap. As I go along with the swap (almost finished, THANK GOD!) I will update this parts list, but or now here is what all had to be swapped out and why. Hopefully it will guide you in deciding if this is the right swap for you, and if so it will assist you in the install. This will also, hopefully, keep you from buying a ton of stuff that you can reuse.
K member- It is believed that the K members are interchangable, this is true between 4cyl., 3.8L V6, and the 5.0L V8, but they are conciderably different on the 4.6L. I originally attempted to modify the K Member to work, but it is completely shaped wrong and DOES require hanging. Your old steering rack WILL bolt right up.
Engine, intake, fuel injector system A/C compressor, coil packs and wires, waterpunp, etc.- Well duh!
Computer- This might not be a requirement, you might get away with a chip, dunno. I had a GT comp, so in she went,
Engine harness- This will have to be changed out for obvious reasons.
Headers- I had to change headers beuase the ones that were on the motor (rown Vic police car) were too small in diameter and the flange hit the firewall.
Transmission- I had to change out transmissions bauase her AOD-E will NOT bolt onto a 4.6L. Thankfully, I had three 4R70Ws lying around. Standard (manual) transmissions should interchange though.
Transmission harness- The harness is the same between AOD-E and 4R70W, but the O2 sensor harnesses are different. You probably can modify your old harness to work though.
Which brings us to O2 sensors. I am not sure what the differences are, but the part numbers for the 3.8L and the 4.6L sensors are different, so I changed them out to be safe. Her old O2 sensors did screw right into the GT pipes though. Again, if using the old trans harness, you can reuse the O2s.
Brake booster- The Modular motors (even the 16 valve GT) will not clear the vacuum booster, so you will need to get a 1996+ GT hydroboost.
Brake booster to steering lines- The booster runs off the power steering pump, therefore you will need to get a set of 1996+ hydroboost and power steering rack lines.
Slight modification of the brake lines will be necessary, as the V6 lines go in from the side, the GT goes into the booster from the bottom.
Transmission tail piece- The ONLY reason why I had to swap these tailpieces out is because the Crown Vic has a larger diameter yoke, therefore the rear seal is too large, and for some reason I cannot get a rear trans seal for a 1996+ GT 4R70W transmission.
Exhaust- Includes intermediate pipe and mufflers.
Radiator- The hoses are in diferent places and are not the same size.
Overflow tank. To match the radiator.
Modification of the drive shaft- The old drive shaft will work, but you will need to either 1. have the shaft shortened approx. 1", or 2, cut off 1" off the yoke. The splines are the same from the V6 and the autos, but the motor pushes the trans. back slightly.
Motor mounts- They are not the same as the V6. I piked up a set of solid motor mounts for a GT for $49.00.
The dash wiring harness does NOT need to be removed for a 4.6L swap, but WILL need to be changed to swap out to a 5.0, as the pins are larger for the computer.
Starters- The starter is the same from a 3.8L to a 5.0, but are different for a 4.6L.
Alternator- Not the same as a 4.6, though 3.8 and 5.0 are the same.
A/C lines- As I stated above, the A/C ompressor is different, and the lines are too.
I have been asked this several times, and yes, fuel lines WILL bolt up the the GT rails. These do not need to be changed out.
I hope this helps out somebody, If I did not score the engine, all accessories, transmission, computer, and wiring harness for $100, and if I did not want to do something TOTALLY different to my fiancee's car, I would NOT have done the swap. This has been a nightmare, and will nickel and dime you to death. A 5.0 liter would have been MUCH easier, but in the end, I think it will be worth it. Good luck if you decide to do it though.
Rob
You can't go off of 4.6 info, the 302 is more similar to the 3.8. They are the same engine but on is missing the front 2 cylinders. The 4.6 is a wide mod motor and completely different.
__________________
Friggin OTards
Quote:
I learned an important lesson in the art of debate. Present your argument clearly, arm yourself with cutting wit and of course, bob and weave!
You can't go off of 4.6 info, the 302 is more similar to the 3.8. They are the same engine but on is missing the front 2 cylinders. The 4.6 is a wide mod motor and completely different.
no that is completely wrong. the 3.8 is almost as different from the 5.0 as it is from the 4.6
the only thing that the 3.8 essex shares with the 5.0 is lifters and bellhousing. other than that everything is completely different
__________________
current mods
98 3.8L 11psi P1SC Procharger,97 junkyard engine ,3.73`s,7.5 Detroit Truetrac,TA rear girdle,B&M shift kit,2500 stall
mods to complete
8.5:1 ross .030" pistons,Eagle H-Beam 351W rods,Comp cam 224/236 .569"/.578" 112* lobe sep,Rhodes variable duration roller lifters,Pro-M Univer MAF,siemens deka 60lb injectors, upgrade to D1@20psi,Delk Main Girdle and Main studs, Head studs,Comp 1.7 roller rockers, home ported heads CFM 216/196,PI 3500 stall
You can't go off of 4.6 info, the 302 is more similar to the 3.8. They are the same engine but on is missing the front 2 cylinders. The 4.6 is a wide mod motor and completely different.
no that is completely wrong. the 3.8 is almost as different from the 5.0 as it is from the 4.6
the only thing that the 3.8 essex shares with the 5.0 is lifters and bellhousing. other than that everything is completely different
I wasn't trying to say they were the exact same, I meant in engineering, being pushrod,and for his years running the swap, since the 5.0 came the 95's too. The bellhousing matching up is a pretty important thing too lol
The best way, as always, to do this swap is to buy a complete donor car, at least complete in the front half. Then swap everything over.
__________________
Friggin OTards
Quote:
I learned an important lesson in the art of debate. Present your argument clearly, arm yourself with cutting wit and of course, bob and weave!
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
95 v6 to 5.0 swap
