Mass airflow conversion HELP
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Mass airflow conversion HELP
Hello everybody this is my first post on a form. I have a 1992 F-150 351w e4od
I'm trying to figure out the easiest way and cheapest way to convert my truck from speed density to mass airflow.
My goal with this truck is to have it as an optional daily that makes good power. Right now I'm just not happy with the performance. Don't get me wrong it runs great but I've been wanting more
My set goals are just to covert to mas for now, in the near future I plan on getting a bigger cam heads intake headers and maybe just maybe if I ever feel the need turbo. But eh I just want a sold 400-500 hp out of the old girl. I've been thinking about a carb swap to just get away from map but I really don't wanna go that route. I know all the pros and cons with that.
Anyway all input is welcome and I desperately wanna do the conversion don't tell me to just stick with sd because I won't I just need the guidence from some knowledgeable people to get this done. All the other forms with this question are just flooded with people saying a bunch of unhelpful stuff.
I'm trying to figure out the easiest way and cheapest way to convert my truck from speed density to mass airflow.
My goal with this truck is to have it as an optional daily that makes good power. Right now I'm just not happy with the performance. Don't get me wrong it runs great but I've been wanting more
My set goals are just to covert to mas for now, in the near future I plan on getting a bigger cam heads intake headers and maybe just maybe if I ever feel the need turbo. But eh I just want a sold 400-500 hp out of the old girl. I've been thinking about a carb swap to just get away from map but I really don't wanna go that route. I know all the pros and cons with that.
Anyway all input is welcome and I desperately wanna do the conversion don't tell me to just stick with sd because I won't I just need the guidence from some knowledgeable people to get this done. All the other forms with this question are just flooded with people saying a bunch of unhelpful stuff.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
You're going to need a tuner for that level of power and MAF doesn't provide that, so you would be better of with a tunable PCM. And since you have an E4OD trans you can't easily swap to a carb as that trans is computer controlled and it won't function correctly without at least some engine sensors.
FTE Chapter Leader
Joined: May 2006
Posts: 12,341
Likes: 1,314
From: Central Mississippi
Unhelpful or not, you are not going over 300+ with stock electronics & control without tuning.
Melted or cracked pistons will be the result if you try. The reality of physical limitations does not care otherwise.
Melted or cracked pistons will be the result if you try. The reality of physical limitations does not care otherwise.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Easy button to obtain your goals....and the ability to say Speed Density: https://www.stinger-performance.com/...te=common/home
Laughing Gas
Joined: Jul 2009
Posts: 1,017
Likes: 408
From: NE Ohio
Lots of 96-97 F-150/250 351W mass-air trucks in the junkyards.
My buddy converted his '95 F-250 5.8/E4OD 4x4 to mass air/OBD2 using factory 96-97 parts. Noticeable difference in drivability between the SD and MAF! The hardest part is getting the 'star balancer' for the misfire monitor, otherwise the CEL stays on. Those balancers no longer available, so he had a star made that bolts to the back of the stock balancer, but that is not installed yet. There are a few other things that needed to be re-pinned. That new balancer is on the new engine already on the stand waiting to go in -- a 393W that he put together to replace the stock 260k-mile 5.8. The engine swap will happen sometime this fall/winter.
A few more performance goodies went into the 393, which is why he wanted the mass air converion. Other than the stroker crank, it got Keith Black hyper 22cc dish pistons for a 9.4:1 compression, then a Comp hydraulic roller cam/lifters, etc. Topped with port-massaged Ford Motorsport Z302 heads, an Edelbrock Performer EFI intake system, 80mm mass air meter, 24-lb injectors, shorty headers...
My buddy converted his '95 F-250 5.8/E4OD 4x4 to mass air/OBD2 using factory 96-97 parts. Noticeable difference in drivability between the SD and MAF! The hardest part is getting the 'star balancer' for the misfire monitor, otherwise the CEL stays on. Those balancers no longer available, so he had a star made that bolts to the back of the stock balancer, but that is not installed yet. There are a few other things that needed to be re-pinned. That new balancer is on the new engine already on the stand waiting to go in -- a 393W that he put together to replace the stock 260k-mile 5.8. The engine swap will happen sometime this fall/winter.
A few more performance goodies went into the 393, which is why he wanted the mass air converion. Other than the stroker crank, it got Keith Black hyper 22cc dish pistons for a 9.4:1 compression, then a Comp hydraulic roller cam/lifters, etc. Topped with port-massaged Ford Motorsport Z302 heads, an Edelbrock Performer EFI intake system, 80mm mass air meter, 24-lb injectors, shorty headers...
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