94 bronco XLT, 5.8L, E40D. I have put a TB spacer, underdrive pulleys, BBK 56mm TB, MSD coil, New engine, gt-40y heads(will be on in 2 weeks), FRPP shorty headers, Jet Module and a B&M shift kit. I want more power. Budget is tight right now, just spent $700 on the heads. What are some cheap or free things I can do to increase my performance? I love my Bronco and want to keep it running for years to come, but it lacks the power I want. Thanks for your input guys. Thanks again guys .

 

Put a cam in it, although not free, a better cam will more efficiently use those heads. Try the EFI friendly Comp Cams i believe the P/N is 35-255-5

 

Taller gears and a cam...that'll definately help!

 

I'm assuming by "taller" he means lower gears.
3.55's would be good if you don't already have them...3.73 would be even better.
If you are 4wd this means very expensive because you have to change the front also.

It sounds like you have improved the intake side. Besides the headers you should definately consider some exhaust work to free up the other side of your engine.

 

Yes I do...I recommend taller gears for any OD tanny. I have 4.10's in my 94 SC'ed Lightning and it drives great down the interstate and works well on the strip/street....with no weight reduction.

 

What are you running, speed density or MAF?

I am assuming Speed density...and you also have the E4OD so you can't easily convert it to MAF....whatcha workin' with on this EFI so it'll run that motor? The stock system won't do it...

If you have speed density, you'll need to tune the computer or it won't run that engine. Swapping to MAF would pretty much solve the problems cuz it can adapt to engine mods, but with the E4OD it's very difficult...https://www.ford-trucks.com/forums/s...maf+conversion

I would leave the stock cam...and get a 1.7 roller rocker instead of buying a new cam.

 

Doing a MAF swap alone will NOT fix everything on a motor that is not stock. With a cam, heads, and other performance parts, even a MAF system would be better suited with some additional tuning to maximize your combo.

 

I don't necessarily agree with your first statement, but tuning is usually not manditory like it is on speed density...but like you said...tuning would increase performance...thats sorta a given...

The MAF will not 100% adapt, there is still tuning but it's not 100% manditory like the speed density system. If you re-read my post I was pretty clear without getting into details...

The MAF system is very adaptive, it will run it fine for the most part, the only opportunity for issues will be in open loop situations. The common things that will happen are...

Tip in detonation (lack of fuel)
Cold Starting troubles
WOT lean conditions

On such a mild build, I don't believe there will be many issues, even in open loop. But he does have an E4OD, so MAF might not even be an option to him (read the link I put there, talks about everything) I'm going to be running a 400hp 393 off a stock ford MAF EFI, I will wait and see as to what tuning will be needed.

 

The last two mass air trucks I tuned had cam, heads and several other performance parts. Yes, those trucks idled and ran, but the idle, cruise and WOT were much better after some tuning. When I converted my truck over to MAF, I still had some issues with the factory parameters and aftermarket parts. A little tuning helped out alot.

I may not have explained myself very well before. I guess what I'm trying to say is why would anyone (inlcuding yourself) spend the time and money to do a rebuild and not want to maximize the potential power that a combo is capable of generating...especially a stroked combo??? If your plans to run a MAF with stock settings on your combo is to prove some point, then so be it. I know of a few,that have already done that, and yes, their trucks idled and drove. However, the additional tuning really brought their combos together and corrected a few tuning issues they had with the stock tables/parameters.

As far as the tranny goes, the GEN 1 L (Ford Racing and Pro-M) kits seem to work with the standard F-150's (one member here that I know of is using the Ford Racing kit).

With SD, you can do many things such as heads, and a limited cam grind, etc. .., and those systems will idle and cruise but they do need some type tuning as well. Now the tune on a SD system is much more involved...especially on the fuel side, which is why tuning is damn near mandatory.

 

Blurry what extra tuning are you talking about, I'm running about the same setup as 80Bronco except I don't have the GT-40 heads. I just bought a set of 22lb. injectors and a 73mm. mass air meter. Any extra tuning ideas would be appreciated. Thanks

 

For what its worth, Ford Racing Parts online has a mass air flow conversion package for your vehicle. It is a direct bolt on kit produced by ford. Look in thier 2005 parts catalog on page 100. It may save you a lot of tuning headaches and improve your proformance quite a bit.
RAy

 

I am currently running SD, but am looking into converting to MAF, any ideas? From the looks of it, I just need the MAF, Computer and some wire. Correct me if I am wrong. Thanks guys.

 

for you to get MAF on your rig cheap . you will need to find a 93+ bronco/f150 that has a mass air 302 in it and e4od tranny from a wreckingyard. then snag the entire harness and ecu you may still need a custom chip made to afterwards but only do this once you have done everything you plan mod wise first. that way you spend money on one chip burn.
Otherwise your looken at Pro-M's $1500 kit to make your rig mass air because of your e4od tranny.

 

The 5.0L ECU will work on my 5.8L? What kinda chip would I need to get? Thanks Kem

 

well that would be your only choice because there are very very very few 5.8 maf broncos running around before 96. 96 is obd-II which you dont want. if you got all the wiring from a maf 302 bronco/truck , ford might be able to sell you a ecu for a maf 5.8/e4od maybe . but if you had to run that 302 ecu then a dyno day with some tuning would get you all the snot you need. and would allow you to STROKE that motor if you like.