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Yup the throttle body of the 460 is almost identical to the throttle body of the 5.0/5.8. The only difference is that it's horizontally mounted to the upper intake instead of being vertically mounted. I'd say all that's needed is the y-pipe and hose from a 1994 MAF truck in order to attach the MAF sensor to the throttle body. Looks like the lightning kit would work for all the V-8 engines that have a E40D behind them.
except that if the 460 has the tb mounted horizontally, the tubes will bend the wrong way for you. I just went through all this. Instead of it bending to the right, it will dive either straight down or up. The good news is that if you get the part (just got one today in fact) you can adapt it to work by taking the hoses off the plastic "Y" and cutting your hoses after it makes the bend, add the "Y" then adapt what is left of your hose to go to the MAF sensor or buy the one that is made for it and cut it down (for about 50 bones).
I wouldn't use my stock tubes. I would take the tube off a 1994 truck that allready had the MAF. Those use one tube instead of two like the Speed Density trucks. And they have a y-adapter allready that goes onto the throttle body. And the tubes are flexible. All in all a little modification to the air box wouldn't be an issue for me. That would be about the easiest part of the conversion. Plus I can always slap together a tube from parts I get from a hardware store.
I think the 460 throttle body is larger than the 302/351 throttle body. It is going to be a custom job to get the hoses in the right orientation - they are horizontal and farther back. The FIPK probably is the same, and unless I'm missing something, it's only the filter that goes on the air filter side of the intake hoses. I think the thing to do would be to get an intake system from a 302/351 mass air motor and use the y part, and also get a 460 intake hose system, cut it midway between the filter and the t.b. and use the part that goes to the throttle body, mated to the y pipe from the 302/351.
I was going to edit my last post, but time expired, so I will post another. Here are some pictures of my y-pipe from a MAF 302/351. I think realistically the only part you might be able to use would be the plastic y itself. The hoses are going to be nearly impossible to get to the correct angle of a 460 throttle body.
You can go to a junk yard and cut yourself off the connector that plugs into the computer, you could get one from a Mustang, Thunderbird or truck and probably others. You will have plenty of pins to work with then. The pins come out of the connector pretty easy, you can solder wires on to go where you need them and put the pin in the connector on your vehicle. Make sure you leave a few inches of wire off the connector that you get so you have something to solder to. Also make sure you know the pin number locations, looking at books it can get confusing what you are looking at and what they are showing you. Make sure to solder your connections, use some good quality heat shrink to cover your connections and you will be fine and double check with a meter after every connection to double check where your connection goes.
I am doing the conversion as we speak. I was able to find aftermarket pins and made my own wiring harness for the injectors/maf sensor. My question is what about the knock sensor? It doesnt show one on the mustang wiring harness. I guess it just goes unused then? Also on the Mustang it shows a "cannister purge solenoid" which my year truck doesnt have (88 bronco) and wonder if this will generate a code if it goes unused. I have been taking lots of pictures and taking lots of notes in case anyone is interested. I will post them on my website if anyone is interested.
Last edited by Brettddglas; Jul 26, 2004 at 12:00 PM.
The mustang computer does not use a knock sensor, so you are correct about that. Not having a canister purge solonoid will throw a code in the computer, but I don't think it will affect driveability. I went to Advance and bought the cheapest canister purge solonoid they had for a '90 mustang and used it. It uses a plug like what is found on the tad or tab solonoid. For some reason, none of the ones they ordered for me matched the plug that was on the mustang harness. I'm going to be swapping my electronics back over to the mustang system in the next few weeks (already swapped, and un-swapped once), soon as I can get my hands on some decent injectors. Good luck, and let us know how it goes.
Okay.. got it done... fired it up.. ran great.. for about 10 seconds. Then it sounded like half the motor wasnt firing and smoked like nobody's business. Would do this for about 10-20 seconds and then run fine again for about 10 seconds. Do this over and over. Weird.. Checked everything, seemed okay. Finally thought it must be a sensor or computer. Changed the MAF sensor to a stock one (had a 70mm cobra MAF sensor supposedly calibrated to 19lb injectors) and let the computer reset again.. and bang.. she runs great. Has lots more power and throttle response.
couple of questions though.
1) only running 1 O2 sensor until I get my new exhaust put in. Should I split the sensors output to both pins on the computer?
2) Took it up a nice steep hill and now it knocks quite a bit with the knock sensor gone. Just take some timing out of it or????
3) How do you tell what injectors the MAF sensor is calibrated for? I know it has to do with the size of the sampling tube. Is there a size chart for this somewhere that can be referenced?
So far I am very pleased with the outcome. Oh one last thing. No one mentions the plastic wire protector on the back of the harness you have to drill out to add the wires necessary. Not a lot of trouble, just wasnt ready for that.
Took me a while longer than I planned (all said and done about 5 hours) but like I said, I am very pleased with how it runs now. Now when I put the fresh motor in (5.0+.060, 10.5-1 compression forged pistons, ported/matched heads, e-303 cam, equal length headers and big fat exhaust) I should really see the difference.
Definately would recommend this project for anyone that has the speed density/bank firing computer in their vehicle.
Last edited by Brettddglas; Jul 26, 2004 at 07:48 PM.
I have the O2 sensor signal wire split to both inputs on the computer.
You can try taking timing out of it, but it should be the same as what the truck was timed with on the stock computer. I think everyone who has done this swap on their own has experienced spark knock on the first try. It may boil down to getting the MAF recalibrated - I'll know in a couple weeks when I try mine out.
Some MAF meters use different sample tubes to account for injector changes, others, like Pro-M, is calibrated electronically.
I just left that plastic backing plate out of the computer connector on mine. I did use the rubber part though.
Did you have to modify your current wiring harness? Painless parts sells alot of mustang wiring harnesses.You couldn't have just slapped a mustang harness in there?