What Strangeranger said! Do not expect that 14" FAL fan to work by itself. My kit uses 2 - 14" fans, and I need both of them running on a hot day every time.

Also, that was good advice Signmaster gave on the ignition upgrade. I saw some gains when I did that, and I enjoyed some better gas mileage too. I used an Accel coil, Accel wires, and an Accel Cap/rotor.

I'd say ditch the fan, get the pulleys and upgrade your ignition. Inexpensive mods that are worth buying, and will transfer over to this:

 

Im getting super good ideas here! Can someone point my in the direction of that ignition box mentioned? Sounds promising. I also, liked the accel coil, sparkplug wires, and cap, wheres the best/cheapest place for that?

MUCH APPRECIATED!!

 

The coil is your ignition box.

 

There are aftermarket multi spark type boxes, but the primary concern is the hotter coil and good tune up goodies. I have a Jacobs multi spark CD type box, but did all the stuff at once so I can't say for sure how much more difference having the box made. I've also fried two of them, and have heard similar stories with MSD or just about any box. Jacobs was great to deal with on replacing them under warranty, but I'd rather never have to use the warranty.

I'd say you can get 250-260 truck friendly HP out of the stock block. Beyond that you're going to need to start digging into the internals.

 

another good old trick is to bump the timing up to 13-17 degrees, and put a short belt on it to bypass the smog pump , ive had alot of mustangs and that was always a good cheap thing to do to help out on the hp side.

 

Does the 92 have the MAF or MAP setup???

If he doesn't have the MAF,
then you guys are giving a bunch of ideas
that will be trouble for a MAP.

If 92 DOES have the MAF, then disregard!

 

92's are speed density...no mass air flow sensor

 

If that is the case, then most of the mods suggested in this thread so far will not work.

 

why is that ?

 

S/D systems don't measure the actual airflow. They measure the Manifold Absolute Pressure (MAP) and calculate airflow from a table of expected values. Any change that improves airflow more than about 10% is going to run off that table of expected values and confuse the PCM.

The more significant mods like better heads, an aftermarket intake manifold and camshaft will do exactly that.

Trivial mods or those which do not significantly affect airflow will cause no problem. Aftermarket air intakes, e-fans, underdrive pulleys, etc won't upset the PCM. High lift rockers with no other internal changes will usually sneak by. Exhaust systems increase the efficiency of the engine in pumping out exhaust gasses so they necessarily cause more fuel/air mixture to be drawn in during overlap. A cat-back system and a high flow cat will generally not cause any problems. Add a set of headers and you may get close to the limit of the stock PCM.

The good news is that you can always get a piggyback chip or get your PCM re-flashed by a tuner.

 

MAP (SD) systems are programmed with very little 'wiggle room' to compensate for mods to the engine.
Mods will just confuse the computer because of the very strict perameters
of the programming, and the slower, less exacting measure by the sensors of
what is going on in the engine.

MAF systems measure the airflow going into the engine in real time and the
computer is programmed to run things by how much air is actually going into
the engine, as opposed to a chart that says how much air 'should' be going
into the stock, unmodded engine (like SD).

Make sense?

SD only knows that the stock engine takes in X-amount of air.
Any mods improving breathing, in or out, cannot be compensated for.

MAF knows exactly how much the engine is flowing, regardless of mods,
and it compensates.

Edit: StrangeRanger is a faster typer...

 

i got ya, just never noticed any problems with mine.

 

Like StrangeRanger posted, there is a little variance for mods that really work.
Sometimes though, mods don't do all that much as we think,
therefore don't affect the SD system.

Also, there is the possibility that some mods will run within the perameters of
the SD system, however, since there is no additional input from the computer
in the way of fuel or timing, you get no benefit from your money spent.

 

What mods you got?
Just curious.
I have SD on my 90...

K&N, headers, dry TB, and FM muffler is all I have right now.
Curious how much further others have gone.
It is not supposed to be able to handle much more than what I have...
Also, I haven't even noticed any improvement from my mods.
Sounds good, but these mods have given awesome SOTP power to
other vehicles I have had... Nothing to the SD F150.

 

I've put an electric fan on my truck and it works very well. I had one form a 3.8 Taurus ($15 at the pull-a-part) and a relay kit from jegs. It done well and I've since upgraded to a dual fan from a Chrysler LH sedan ( Dodge Intrepid, Chrysler 300, again $15) and now using a soft start control ($70) since I got the air conditioning working again on the truck. No probs over heating.