B303 Cam

[Range98]

I don't know how it'll work with the Explorer computer, otherwise it's fine with the rest of the build. It will work with a Mustang computer, the B cam was originally made to "cam up" an 86-87 5.0 HO with speed density.

Ok, so worst comes to worst I could swap in the mustang computer after the engines installed. Won't interfere with anything? Not the transmission or anything? On a few sites like jegs and summit the cam says specifically will not work with speed density. What year computer should I look for if I need it?

 

[baddad457]

Ok, so worst comes to worst I could swap in the mustang computer after the engines installed. Won't interfere with anything? Not the transmission or anything? On a few sites like jegs and summit the cam says specifically will not work with speed density. What year computer should I look for if I need it?

I'm no EFI expert, I'm going by what Ford said about it years ago. Don't recall where I saw that info, but clearly recall reading the part about the B cam originally being made to cam up a SD 5.0.

 

[shane96ranger]

I'm no EFI expert, I'm going by what Ford said about it years ago. Don't recall where I saw that info, but clearly recall reading the part about the B cam originally being made to cam up a SD 5.0.

I thought I read this about the E303 somewhere. I've actually seen an E on speed density (88). It ran very well.

Sent while I should be doing something else

 

[Range98]

We need a good cam sticky thread!

 

[Teddyzee]

I would definitely change the springs.
I have a Bcam...

 

[Mac]

Ok, so worst comes to worst I could swap in the mustang computer after the engines installed. Won't interfere with anything? Not the transmission or anything? On a few sites like jegs and summit the cam says specifically will not work with speed density. What year computer should I look for if I need it?

If you are using the stock Explorer 4E70W trans, it's controlled by the ECU. Without that computer will have you to use an expensive after market (Bauuman). Swapping in a Mustang computer would work with some wiring but expensive. I suggested that CompCam 264 with the LSA of 114, it works. Best to call the Ford FRPP hot line at 800-FORD788 for what they would have to say. Lot of the aftermarket suppliers are still behind when it comes to caming the Explorer motors with their ECUs.
Dave

 

[PetesPonies]

No , a "B" cam has problems with speed density. You should have MAF for a B cam. I have built a few engines with B cams. The first, was for myself. a B cam with 1.72 rockers is a helluva combination. I ran 12.8s with this combo in a street Mustang. I would suggest the 1.72 toi take full advantage of the lift you can have. It will increase effective duration just a tad, but it really makes a good combo. But if you do not have MAF, I wouldn't suggest it.

 

[shane96ranger]

No , a "B" cam has problems with speed density. You should have MAF for a B cam. I have built a few engines with B cams. The first, was for myself. a B cam with 1.72 rockers is a helluva combination. I ran 12.8s with this combo in a street Mustang. I would suggest the 1.72 toi take full advantage of the lift you can have. It will increase effective duration just a tad, but it really makes a good combo. But if you do not have MAF, I wouldn't suggest it.

What heads were you using?

Sent while I should be doing something else

 

[PetesPonies]

On the 12.8 car, I have a set of old DOOE Windsor heads. I did an engine for a guy with the same cam/rocker combo and used a set of GT40 heads. It performed about identical.

 

[Range98]

The 97 mountaineer has MAF I believe. I am holding off on the cam swap until after the engine is already installed. When I get it running well I will swap the cams out so I know if there's something not running right, it's something to do with the b303.

 

[shane96ranger]

You can use that ECU if you get a custom tune. Scour the internet and you'll find so many stories of the Explorer/Mounty ECU's not being able to idle or run properly with the factory calibration. The Mustang ECU is much more adaptive to changes in valve timing, etc.

EDIT: you should be able to run an HO cam with no issues IIRC.

Sent while I should be doing something else

 

[baddad457]

EDIT: you should be able to run an HO cam with no issues IIRC.

No point in swapping to the HO cam, there's only ten degrees duration and ..30 lift only on the intake side vs the Explorer's F4TE cam. You would gain more just by swapping rockers to the Cobra's 1.7 full rollers.

 

[shane96ranger]

No point in swapping to the HO cam, there's only ten degrees duration and ..30 lift only on the intake side vs the Explorer's F4TE cam. You would gain more just by swapping rockers to the Cobra's 1.7 full rollers.

True, but it will at least run.

 

[Lucifer sam]

No point in swapping to the HO cam, there's only ten degrees duration and ..30 lift only on the intake side vs the Explorer's F4TE cam. You would gain more just by swapping rockers to the Cobra's 1.7 full rollers.

Yea, Not to mention for the money they are awesome supercharger/turbo cams.

Ford racing cams sound cool at car shows and stop lights but they are so outdated. There is much better cam technology out now and if you want more performance out of It id go over to the corral forum and do some more research on cams.

 

[RangerSVT]

On the ecu, the ex and A9L are not compatible, you can't just swap them out. The A9L is dizzy, the ex is dis. If you want performance enhancements, you WILL need a tuner. Getting one will allow you to run the cam of your choice. I plan to run something similar to the X cam as its better suited for 4x4 applications with them rpm range its spec'd for...

SVT