Mass Air
Senior User
Joined: Jun 2001
Posts: 150
Likes: 0
From: Watertown, NY
Mass Air
I have been looking into upgrading the 351w engine in my '88 f-150 with such things as an aftermarket air intake system, throttle body, heads, gt-40 intake manifold, and heads. I have heard that in order to do this it is wise to switch to the mass air system that is found in some of the newer trucks. First off, do I really need to make the switch, and if so what parts in particular? I heard I can get the system from '94 - '96 trucks, but im not sure what to change. Any help would be appreciated. Thanks.
'88 F-150 351w, 4x4, 3" lift, 33's, headers w/straights out back
'88 F-150 351w, 4x4, 3" lift, 33's, headers w/straights out back
Elder User
Joined: May 2001
Posts: 662
Likes: 0
From: washington
Mass Air
You do have to convert to mass air with the mods you stated. If you did it with the speed density system you will actually loose power and your rig will run like c#$%. As for the years I have no idea..... You can buy the kit from ford motorsport and a few other manufacturers
Laughing Gas
Joined: Jul 2001
Posts: 1,019
Likes: 3
From: Bismarck, ND
Mass Air
brett_d:
Did you use the Ford Motorsport kit on yours, or did you use aftermarket? If you did use aftermarket, which kit and what do you think of it? I'm leaning towards buying the Motorsport kit, as I've read of problems with some of the aftermarket kits, and I'm curious. The Motorsport is pricey, but it will be worth it to me (over the price of the others) if it works as it's supposed to.
Did you use the Ford Motorsport kit on yours, or did you use aftermarket? If you did use aftermarket, which kit and what do you think of it? I'm leaning towards buying the Motorsport kit, as I've read of problems with some of the aftermarket kits, and I'm curious. The Motorsport is pricey, but it will be worth it to me (over the price of the others) if it works as it's supposed to.
Elder User
Joined: May 2001
Posts: 662
Likes: 0
From: washington
Mass Air
I have the motorsport kit. It was a pretty easy install and I have had no problems with it. I had some upgrades to my rig with the speed density system and when I switched it made a night and day difference....
Junior User
Joined: Feb 2001
Posts: 82
Likes: 0
Mass Air
What was the price for the motorsport kit? and do the kit come with a new computer? thanks
Trending Topics
Laughing Gas
Joined: Jul 2001
Posts: 1,019
Likes: 3
From: Bismarck, ND
Mass Air
Sounds good. Thanks! I'd like to keep my 302EFI, if I could get it to make enough torque (just enough to make my Bronco get out of its own way, and tow a trailer occasionally.) I read your post re: the E303 cam. I'm watching that with interest, also, as swapping in a 351W or stroking the 302 out to a 347 would both involve more work and money, and if the 302 with the roller cam, GT40 (or P) heads, and headers would do the job I don't necessary need to go with more displacement. (Especially since I'm going to be converting to mass air and using GT40 or GT40P heads, anyway, no matter what engine option I go with). Speaking of which..... did you ever find a decent deal on cast iron GT40'S? I found a set advertised at $649.00 per pair, if you're interested.....
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Laughing Gas
Joined: Jul 2001
Posts: 1,019
Likes: 3
From: Bismarck, ND
Mass Air
dee:
I've priced one out, so far, at $750.00. I'm thinking that there are likely better deals to be had, but I haven't shopped around. The Ford Motorsport kit I checked on did come with a new computer, as well as the mass air sensor, and EFI wiring harness. As I mentioned earlier, I've read where some of the other, lower priced kits aren't as thorough (don't include some type of jumper harness for the EEC), and have idle quality problems.
I've priced one out, so far, at $750.00. I'm thinking that there are likely better deals to be had, but I haven't shopped around. The Ford Motorsport kit I checked on did come with a new computer, as well as the mass air sensor, and EFI wiring harness. As I mentioned earlier, I've read where some of the other, lower priced kits aren't as thorough (don't include some type of jumper harness for the EEC), and have idle quality problems.
