[updated:LAST EDITED ON 23-Sep-02 AT 08:30 PM (EST)]I'm going to be inheriting some money soon, and because of the mistakes I bought with my first truck(No 4x4,v8 or ext cab) i'm going to be selling my current one and be buying a better one with the money I get from it plus some of the money I inherited(the rest is gonna collect interest in the bank).

I'm looking for a 351w with MAF, which years should I be looking for? I did a search but all I found was disagreements on the years it started for the 351. Some say '94 some say '95, even one said all 92's and up with auto trannies.

So which is it? Thanks!

Did any year 351's come with roller cams?

 

The ones with MAF were 95 in CA (all 351s are autos), and 96 on all states. There is a possibility of 94 CA trucks having it, but I don't think so. It's easy to tell, pop the hood and look at the air intake tubes, if there are two tubes without a sensor and some wires there, than it's speed density. If there is 1 tube, into two, with wires and a sensor, that's MAF. I would suggest to research the OBD-I and OBD-II emissions systems between 95-96. 96 has more emissions stuff on it, I don't know if it's a good thing or a bad thing, but I do know that there are more o2 sensors on the 96, the 95s only have 1. Notice how on the posts that Ken (webmaster) made in this forum stuck to the top about computer chips, 88-95 (no 96...) that's because there is a little different system for the 96. I just don't know a lot about it so someone else will have to chime in here. Unless you plan on doing some new heads, intake, and a cam, than MAF is not necessary, speed density isn't a bad setup. I think the rollers came into play around 94? We've had a conversation about this before, couldn't really figure it out.


Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds .

Thats it for now, saving for a stang. Check out my Gallery for a look-see.


Justin

 

I did a tuneup on a 94 supercab 4x4 with a 351/E40D, it had Mass Air.

351's were roller block in 1992 aswell.

 

Had to of had CA emissions or it was a conversion.


Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds .

Thats it for now, saving for a stang. Check out my Gallery for a look-see.


Justin

 

[updated:LAST EDITED ON 24-Sep-02 AT 04:31 PM (EST)]MustangGT221 what you said about the MAF years in true with the 4.9L....the other engines had it years ahead of it, I've seen them in 93 STOCK.

 

It could have had california emissions, but I doubt it since the guy ordered it new. He had no clue when I asked him about it. It has 175k and runs like new

Ford's had Mass Air on trucks in the mainland since late '93, but like you said, only on 302 and 351 automatics.

 

Im beginning to think even Ford doesnt know which is which. I just looked at a wrecked 1995 F150 today. Had a 351w with E4OD trans and was speed density. I thought for sure it would have been mass air and was going to get it to swap into my truck which is currently speed density.

 

I believe only the post-94 351's actually had the roller cam. They may have had the same block since 92 but from what ive confirmed from different engine companies it started in 94. The 302 however, had roller cam capability back to 88 or so and 85 in the HO. As far as mass air, you are garranteed to have it in a 96 truck (unless it is a F-250 or F-350), earlier than that and its hit and miss.

 

>I believe only the post-94 351's actually had the roller
>cam. They may have had the same block since 92 but from
>what ive confirmed from different engine companies it
>started in 94. The 302 however, had roller cam capability
>back to 88 or so and 85 in the HO. As far as mass air, you
>are garranteed to have it in a 96 truck (unless it is a
>F-250 or F-350), earlier than that and its hit and miss.


1988? Are you sure your not thinking hydraulic lifters?

 

OK let me get this straight. In 1995 the 351w block would have been roller ready but not necessarily have had a roller cam? I thought to run a roller cam it needed to be mass air?

 

It doesn't have to be MAF if it's a roller cam, but we're getting away from the man's question here guys.


Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Flowmaster Exhaust, Sunroof, Clear corners w/ Diamond headlights, CD player with 2 10" subs and some 32" BFG Muds .

Thats it for now, saving for a stang. Check out my Gallery for a look-see.


Justin

 

Sorry if that wasn't very clear. (With the 302)-They had roller cam capability since 88. They still had hydraulic flat tappet but the block was built to accept either one just like the mustang block. However, i DON'T know for sure if the 351 had roller "capability" since 88. And going from what an engine store told me the 351's did in fact have a roller cam installed since 94. I have been thinking about calling ford though to verify that.

From looking at the difference in HP numbers of the years that had roller cams and the ones that didn't it appears to me that roller cams will not do much if anything for performance. The same place that told me the roller cams were in 94+ 351's also said about the only thing a roller cam will do is allow the engine to rev faster which I don't see as much use.

 

[updated:LAST EDITED ON 25-Sep-02 AT 05:43 PM (EST)]I have a 94 w/351 and its a speed density set up.....

Looking at the Generation II intake kit for this year (94) and it doesnt list one available. I inquired as to why and the shop guy said that its because the GenII relies on the MAF....

Now, this is an interesting thread.. Could someone explain the difference between the 2 set ups and incluse the benefits and negatives of each? (SD VS MAF)
Thanks

 

I am extremely interested in a EFI 351 with MAS to swap into my early Bronco. Can anyone tell me what models had these engines? Is the Lighting 351 a MAS system? Are the newer blocks compatible with my NP435 tranny? So many questions I know, just don't have any info. on the newer engines and any possible problems with the swap yet. Thanks.

Joseph