Maythej

Have a 92 f150 with e40d and 351w engine. Currently has speed density. It's bored .30 over has a mild cam and headers. It runs ok most of the time but stalls allot when idling after it gets up to temp. I've been looking around and it seems like if I did a mass air conversion it might help. Any recommendations? If so what's the cheapest Kit I can get?

Steve83

No, modifying it more will not make it run better. And doing things the cheapest way won't, either.

If you want it to run well, keep it as close to stock as possible - put in a stock cam & exhaust manifolds. Then you'll be able to diagnose the stalling problem (if it still exists).

Maythej

There must be a way to use a different cam in that year truck. It's a Ford racing truck cam. I didn't necessarily mean " cheap" as in quality parts. I only said cheap because I found the exact same wiring and ecu ( both new) for different prices.

Steve83

There are thousands of ways to use different cams. But very few of them result in the truck being reliable, economical, driveable, & maintainable.

There are no new direct-fit wiring harnesses for these old engines - there never were. Any wiring "kit" you find is just that - a kit that will require a LOT of installation labor. And it will make the truck more-unique, which will mean no one will know how to work on it because they can't look up the wiring diagrams & find those wire colors. So it'll be entirely up to you to do all the wiring maintenance, diagnosis, & repairs from then on. If you can't, it will be nearly worthle$$. If you maintain it and use mostly-stock parts, it will retain its re$ale value, or increase.

Similarly: there are no new EECs. There are only used ones; some of which have undergone various levels of repair or "remanufacturing" (usually just swapping 3 capacitors, and a wash). So just because you can find 2 EECs with the same PN, that doesn't mean they're "the exact same". There's a reason their prices are different. But check carefully - is one of those reasons the WARRANTIES are different? Will either warranty be honored in a few months or years when you have problems? Will you have to give up your current EEC (which might be in better condition than either reman) as a core?

2dwoods

While he might be a right to his standards there would be no hotrods those engines are a great base although the truck never came with mass air but they have been converted ,its probably not the problem have you cleaned inside the throttle body take it off clean all the oily residue ,ain't nothing wrong with a cam that's been put in thousands of 351, push come to shove put a different intake and a 4 barrel

sdmartin65

I'm not familiar with any MAF kits myself but I do know most of the Ford Racing Cams can have problems even with a factory MAF system. Like many aftermarket cams they were designed for drag racing. I'd say find a cam with better street manners.

Steve83

Yes, it was optional in '94-95 & standard in '96 on trucks <8500# GVWR.

sdmartin65

2dwoods is correct a 92 F150 was not offered with MAF. If you try installing MAF on a truck that is running poorly, it will be hard to determine what is causing problems when installing the MAF. If you really want to install the MAF better to start out with the truck running perfect, as you know there will be some hiccups with that type of install.

qdeezie

Without knowing a whole lot of detail about the previous state of the truck before the rebuild, you might want to try an IAC bypass plate because the engine is probably not getting enough air at idle. For 302 builds (that were running good prior to the engine upgrade), this is the case and I'd imagine it's probably not any different with the 351W.