The reason i want Mass Air is i have done block mods and from what i have heard with speed density the truck does not feel it. I also want that little extra HP and TQ that i can get with mass air with speed density it is holding the truck back

 

Here is what I have leardned about speed density and mass air. I have an 87 mustang that was speed density.Everyone told me I should convert is to mass air-so I did-and the car was slower in stock form.
About a month ago I rebuilt the engine in my 92 F150(302). I installed higher compression pistons, shaved the heads a little, and installed a 302 HO camshaft out of a mustang, and also just recently installed headers. My local ford dealer told me it wouldnt run,because the cam would mess up the speed density system. Well-IT RUNS GREAT.
I dont know if this helps you of not, but I thought it might be useful.

P.S. My brother in law had 2 95 F150's with 302's(he totaled the first one after a week) and BOTH of them were mass air and they werent california models

 

i am not saying that the truck does not run with speed density but from what i ahve heard if you engine is not in stock form SD robs power. And on your brothers F150's they might have been built later then min my truck was born on Dec 16 1994 but is a 95 model and when i got the truck i had th heads ground down right from the dealer. and if what i hear about SD i have never unlocked the full power of my truck.

 

As for the years, I have seen posted that certain F-150s got mass air as early as '93, including all California emmissions models. Some didn't get it until '96. Who knows?


I would tend to agree with Ford302Guy. I've seen posts of quite a few SD systems running fairly healthy mods without problems. True you may get a little more with mass air, but you could get a little more for a set of pulleys for $100 vs mass air for much more money.

 

boy you guys are really making me think here. should i convert my truck to mass air or not? im rebuilding my engine next summer and adding edelbrock aluminum heads, new intake manifold, bigger throttle body and a crane compucam. should i go ahead and change to mass air or no?

 

Keep it S/D...........you could always add mass air later if it doesn't run right.
My motor runs great.
Jerry D


http://hometown.aol.com/dvldog458/myhomepage/auto.html

 

While we are on the subject of speed density, I have a guestion regarding Fipk kits. Are they useful on these motors or am I better off using a replacment panel K&N filter and just relocating the inlet of my airbox to the grill instead on next to the radiator top?

 

My 4.9 LOVES the FIPK. I can't speak for the 5.0's, though.

Take care
~Chris

 

PKRWUD,

Thanks for the reply. I may have to find out for myself.
As they say christmas is just around the corner.
Kids, daddy needs a new airfilter!

 

93 F-150,

I did some liberal drilling on the airbox, and put a drop in K&N in my '95. I left the air supply tube in place as it does help provide some cool air. A friend and I messed around testing with my leaf blower. The tube grabs more air than you would think. I also noticed that the location seems poor, but the flow keeps it fairly cool. At low speeds and around town it will become heat soaked, but the air from it is still cooler than the air drawn from under the hood.

On the dyno, the FIPK might make more power. I took the money I saved by doing the airbox mods myself and bought some underdrive pulleys.

 

In answer to the original question, No, you do not have Mass Air. Should you get it? If you're planning on rebuilding your engine with high performance cams, heads, pistons, etc...then when the time comes, yes. If you're going to leave it as it is for awhile, keep your SD until it comes time to really soup it up. Like mentioned before, SD is better if you're leaving the setup stock, but when you're going to be moving more air through the engine, through whatever means, you need Mass Air because Speed Densitiy doesnt take into consideration your modifications. Make sense??=)

 

thanks for the info i am going to keep it speed density so i can put a nice looking ram air hood that works.