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Ok guys this may be a stupid question, but here goes... I have a '92 bronco with the 5.8L (351W) which of course is EFI. I was looking at at cams on summit racing... and they have a Comp cams Xtreme Energy 4X4 cam and lifter kit that i was looking at getting, however it says it is not computer controlled compatible, does this mean I cant run it since I the EFI set up, or can someone enlighten me as to what this means... for you to see what I am talking about here is the part number K35-235-3
 

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your year of truck uses whats known as a speed density computer, and it is programmed to run stock settings, add a cam in, it throws everything out of whack. only way to get around it is to install a mass air flow setup if you want to run a heftier cam in that truck.

I have been wanting to do that to my truck as well, but it is expensive. you can however adapt a maf unit out of late model mustangs into your truck for fairly cheap, as long as you have the patience and know how to read a wiring diagram. search for "maf conversion" for more info. heres a start.
http://www.fullsizebronco.com/forum/showthread.php?t=164963
 

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Discussion Starter #3
Ok thanks man, makes sense... Can't I run a computer controlled compatible cam? Comp cams has a computer controlled compatible cam for the '92 5.8L, unfortunately it doesnt come in a kit, but thats alright??? Or will that cam mess it up too?? If so I do not think the MAF swap will be too bad, because the intake I am going to run us a trick flow set up that is made for the 5.8L but is designed like the ones out of a late model 'stang, here's the part number for that incase you want to check it out TFS-51511004
 

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the maf swap is easy. Ive done it on both my 89 F250 351 and my 94 F350 351.

The fuel economy increase alone justifies the cost of the swap.

I'm gonna drop a new cam in my truck soon but i wanna go through the motor and refresh it a bit.
 

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Discussion Starter #5
the maf swap is easy. Ive done it on both my 89 F250 351 and my 94 F350 351.

The fuel economy increase alone justifies the cost of the swap.

I'm gonna drop a new cam in my truck soon but i wanna go through the motor and refresh it a bit.
thats probably what ill end up doing, but can i just run a cam that says its computer controlled cam???
 

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sure, the milder cams will still work with the speed density. its when you get over a certain duration it starts wreaking havoc on your computer.
 

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Discussion Starter #8
Ok thanks guys, by the way anyone know what kind of power I can make, by using that cam, and completely re-doing the motor, but not touching the bottom end, so like heads cam, intake, fuel system, exhaust, electrical system, cooling system, etc.???
 

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The information presented to you is slightly misleading. You can't just put that cam in and go. The speed density(SD) doesn't work that. That's true. However, you don't HAVE to convert to a MAF setup. You will have to tune the stock ECM though. That can be done with a Tweecer or a Quarterhorse or numerous other devices. The reason people switch to a MAF setup is so they can make engine changes and have the computer adapt automatically. SD can't do that because it can only assume how much air the engine is injesting based on the information programmed into the ECM. There is nothing inherently wrong with SD, you just have to know how much you can do to the engine before you make the computer unhappy and have to retune it.
 

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The information presented to you is slightly misleading. You can't just put that cam in and go. The speed density(SD) doesn't work that. That's true. However, you don't HAVE to convert to a MAF setup. You will have to tune the stock ECM though. That can be done with a Tweecer or a Quarterhorse or numerous other devices. The reason people switch to a MAF setup is so they can make engine changes and have the computer adapt automatically. SD can't do that because it can only assume how much air the engine is injesting based on the information programmed into the ECM. There is nothing inherently wrong with SD, you just have to know how much you can do to the engine before you make the computer unhappy and have to retune it.
ok, that makes more sense, any idea of wear I can get one of these devices?
 

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By the time you spend the money for a piggy back chip and a tune to handle the cam. You'll be in the cost of the maf swap. I've done both my trucks on the cheap.

My 94 i used a maf from a 99 town car that i had, clipped the harness and wired it in. Paid 80 bucks for a reman A1Cardone ecu from a 93 mustang gt. Added a couple of pins, moved a few more. For about 2 hours of time, the 80 bucks i paid out for the ecu (i had plenty of extra wire and connectors for the harness) i did my maf swap. The truck is silky smooth at idle, starts up easily, has more power and crisp throttle response. Best part is the fuel economy it returns. When the 94 was SD, i was getting about 10-12mpg with the stock 235/85/16 tires. Did the lift kit, went to a 35in mud tire and recalibrated the PSOM for the 35's. In the city getting 14mpg is easy with the air. I've seen 16-17 on the highway crusing 70.
 

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I Paid for this sh!t
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yes
 

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Satyr of the Midwest
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The camshaft should be the very LAST thing to change in a small-block Ford.
 

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The information presented to you is slightly misleading. You can't just put that cam in and go. The speed density(SD) doesn't work that. That's true. However, you don't HAVE to convert to a MAF setup. You will have to tune the stock ECM though. That can be done with a Tweecer or a Quarterhorse or numerous other devices. The reason people switch to a MAF setup is so they can make engine changes and have the computer adapt automatically. SD can't do that because it can only assume how much air the engine is injesting based on the information programmed into the ECM. There is nothing inherently wrong with SD, you just have to know how much you can do to the engine before you make the computer unhappy and have to retune it.
What info has been misleading? the cam i suggested is made for stock speed density eec's,am I missing something??

http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=35-255-5&Category_Code=
 
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