MustangGT221 I found some nice heads that I'd like to use. They're cast iron instead of being aluminum. I don't really like aluminum. They're made by World producst and are called Roush 200 Cast Iron 5.0 Ford Heads. Check them out. Would they conflict with my speed density system? http://www.jegs.com//cgi-bin/ncommer...98&prmenbr=361 I prefer cast iron heads over aluminum because of their superior durability.

 

Those heads will fit a 351 too. There is a link in that thread i gave you that has flow numbers for different heads, AFR I believe it is, has some of the best heads for this motor. I was going to go the 5.0 route but the 5.8 is just much more of a truck engine. Aluminum heads and cast iron don't really matter in durability, they matter in weight and cost. Aluminum heads are about 50 lbs lighter but are more expensive.

 

Is the 1994 intake manifold the same as the 1993 intake manifold? Now that I come back and think about it, that's not a bad idea at all! To top it all off it'll be alot cheaper than the FMS kit if it were even made for my truck. So, I'd need the air cleaner assembly, computer, wiring harness, and MAF sensor? Or is there anything else?

 

You would have to find a computer for MAF and E4OD so a stock Mustang pcm wouldn't work because they didn't have an E4OD. In Ford kits and others, they use a "modified" Mustang pcm. Possibly, you could get either the truck or Mustang pcm reprogrammed for ~$250-up. And I'd go with something like K&N FIPK or similar that comes with a new air hose. MAF sensor will be easy enough to add but the wiring harnass and computer will be difficult to find used.

 

How much extra hp will a MAF sensor give you...guess it depends on the size?...ive got a '90 302, 5spd.....I hate those dual rubber hoses going to the throttle body...Didnt Ford go to just one hose in or around 94?...You see im looking to put in another Fipk cool air intake on my truck...or just make one up my own.

 

You can actually get just as much hp out of a speed density truck. The MAF sensor can restrict air flow and they do fail. The benefits of MAF are that it is more efficient, more adaptable to modifications, etc. The injectors fire only on the compression stroke where s.d. fires on both strokes. And s. d. has a set fuel/spark curve based on parameters for a given truck and environment. So there would be different calibrations for high altitude, CA., etc. It does not measure air flow but "guesses" how much will come in. MAF actually measures airflow (inferred, not directly) and can set the fuel mixture more accurately. So a cam or heads or anything that dramatically modifies the flow of the engine would be more productive on a MAF engine. Unless the speed density truck had a computer reprogrammed for it's specifics (modifications and uses), and then it would be more productive or efficient. Your MT wouldn't have to deal with finding the "right" computer as much because you control the transmission. Other than your firing order being different, a Mustang system would work, and the firing can be modified. You could use a 5.8L or H.O. cam or modify the wiring to use your firing order.

 

Here is a write-up for a VEX1 MA swap on a GEN 1/E4OD Lightning using salvaged parts.
http://www.lasotaracing.com/html/ind...viewtopic_id=6

The only thing I noticed when I did a MA swap on my truck is better throttle response. Other "truck" PCM's that will control an E4OD would be BIO1, HOG0 & WAY1. AKC0 is a MA PCM for a GEN 1 L, but the chances of finding one of those are very slim.

 

In the 90's Professional Flow Technologies was the leader in MAF sensors and kits (Pro-M) so try their site http://pro-flow.com/index.html

 

Someone gave me a website that allows me to buy used auto parts from almost anywhere in the country. I'm not going to go with anything out of a mustang. Any computer and wiring harness I'm geting will come out of a 1994 pickup that had a 302 and a E40D tranny like my truck. The only difference is I'm snatching the MAF and computer and wiring harness. But are the intake manifolds identical?

 

I wouldn't know exactly. My '90 and '97 5.8L are close but I don't know about exactly because I sold the '90 a few months back. There were some changes to the engines prior to '94 but could be calibrations or vacuums lines etc that could be worked out. Have you found a '94 MAF 5.0L w/E4OD and if so does it still have the engine and pcm? That'd be like winning the lottery to some folks. I just moved on to the 5.4L myself. Good luck.

 

'94's and '95's had electronically controlled automatics, so those computers would be an option, but would require some custom wiring. The Ford kits use Mustang computers, not modified at all. MustangGT221 has the Ford kit and has the same computer that I have out of a '89-'93 mustang.

If you upgrade the size, it can potentially give you more horsepower, but just adding a MAF system, you probably won't gain a whole lot. But like Blurry said, throttle response will be greatly improved. Ford made some '94 and '95 F150s mass air, and they have a single outlet air filter housing, and a 'y' downstream to split to each side of the twin throttle body. You can get all the parts from the Ford dealer (expensive) or if you are lucky, you can find them at a junkyard.

The injectors for MAF systems (Mustangs and F150's specifically) fire sequentially, where the SD systems fire 4 injectors at a time. It's not so much that they fire on both strokes, it's that they do not fire precisely when the intake valve opens for each cylinder as the sequential injection does. Both SD and MAF systems have set spark and fuel tables for the various combinations of input signals. Both systems can adapt for varying altitudes, there are no specific high altitude computers that I know of. SD systems are set to infer the amount of air entering the engine based on MAP signal and throttle position signal, and runs from the tables based on those and other inputs. MAF relies most on the MAF sensor to calculate precisely how much air is entering the engine - it doesn't have to infer anything, but the MAF signal is trimmed in the computer based on inputs from air temp sensor, and barometric pressure sensor. I'd change 4 wires to change the injection order long before I'd think about swapping cams to match the injection.

Sounds like a good plan. You may have to steal the entire underhood harness to get that to work since the computer harness is integrated into the underhood harness those years. Just make sure the wiring for the mass air sensor is there at the computer plug. The intake manifolds are identical - the only other difference that crosses my mind is that there may be two O2 sensors on the MAF truck - one in each header. Be aware of that and look and see if that is the case - you can split one signal into two inputs, but that will require some cutting and splicing of wires.

 

Does my 96 5.8L OBDII have MAF? Is their any thing to check over with 100,000 miles and what does it all consist of? just a diff computer program and a few more hose's..?

 

Thank you EPNC. If that's the case I'll just buy headers meant for 1994 302 trucks. The website given to me does have wiring harnesses. This website gives me access to auto salvage yards across the country so one of them must have the wiring harness intact. Hopefully they'll give me exactly what I specify.

 

The MAF does infer the air flow because it does not measure the amount of air going by the sensor wire. There is a calculation involved which does give an air measurement so that is what I meant by inferred. I actually got more throttle response from my '90 speed density truck by removing the air intake duct from the grill to the air box, adding platinum plugs and premium wires, etc. (other minor mods). And my '95 F150 MAF truck did come with the single, y'd air hose so those should still be available, if only as used. And while computers may not be altitude "specific", Ford had high altitude trucks, which may only deal with emissions, calibrations or something other than the pcm. I don't remember if the MAF truck had 2 HEGO sensors but I would think any OBDII system would have more than 1. My '98 5.4L has 3. And splicing would work but remember if retrieving codes that you wouldn't know which side was at fault if you had a problem. It's no biggie if your problem was a HEGO sensor but if it deals with injectors it would be more beneficial to know the bank location. So I would try to wire it as accurate as possible. But you could definitely get it running (even with only 1 HEGO on one side). And remember also that trucks have different cams/heads designed for more low end torque than a Mustang and do weigh more. Lower gears would help get back any low end power loss. Just something to think about if you tow anything and want to use a Mustang pcm. I'm more familiar with the 5.8L where torque is higher (and MAF more scarce). But I'm not as up to date on this topic as I would've been 8 yrs. ago. Some options are no longer there because they no longer produce the parts.

 

I'm hoping that it'll all just go in. Y'know get wrid of the old wiring harness and put in the 1994 truck wiring harness. Plus I can purchase a cold air intake from a aftermarket manufacturer with the MAF sensor built into the intake. It would seem the only thing I need is the computer and wiring harness, and headers designed for 1994 MAF 302 trucks. I can go and grab an aftermarket air intake and be all set.