5.0 camshaft
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New User
Joined: May 2003
Posts: 16
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From: Sackville, N.S.,Canada
5.0 camshaft
I have a '94 F150, 5.0, E4OD, 3.55 posi, shorty headers, 2.25" stainless duals and K&N filter. I'm considering a camshaft change for more low RPM power and maybe port-matching intake to heads. I don't plan any other engine mods. Any suggestions on a particular cam? Is port-matching worth the effort? THANKS!!
Stan
Stan
Senior User
Joined: Mar 2002
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From: Charter Oak, Iowa
5.0 camshaft
CompCams 31-255-5 is a great upgrade from factory profiles. On my truck it adds power thru all the rpm ranges and really comes on at 3K.
Randy
PART NUMBER31-255-5
ENGINE FORD 289-302-351W*
GRIND # FS XE250H-14
DESCRIPTION COMP. FLAT TAPPET CAM
INT EXH
VALVE ADJUSTMENT HYD HYD0
GROSS VALVE LIFT .462 .474
DURATION AT
.006 TAPPET LIFT 250 260
VALVE TIMING OPEN CLOSE
AT .006 INT 15 55
EXH 68 12
THESE SPECS ARE FOR CAM INSTALLED
AT 110 INT C/L
INT EXH
DUR AT .050 206 212
LOBE LIFT .2890 .2960
LOBE SEPARATION 114.0
Randy
PART NUMBER31-255-5
ENGINE FORD 289-302-351W*
GRIND # FS XE250H-14
DESCRIPTION COMP. FLAT TAPPET CAM
INT EXH
VALVE ADJUSTMENT HYD HYD0
GROSS VALVE LIFT .462 .474
DURATION AT
.006 TAPPET LIFT 250 260
VALVE TIMING OPEN CLOSE
AT .006 INT 15 55
EXH 68 12
THESE SPECS ARE FOR CAM INSTALLED
AT 110 INT C/L
INT EXH
DUR AT .050 206 212
LOBE LIFT .2890 .2960
LOBE SEPARATION 114.0
Junior User
Joined: May 2003
Posts: 64
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From: South of Detroit
5.0 camshaft
I have a 93 Van and my buddy has 95 F150, both 5.0's are roller motors so it's a good possibility you have a roller motor. Check with a dealer to make sure. When you order the cam, save yourself some headaches.... TELL THEM THE FIRING ORDER. I didn't, I had to tear apart my engine to replace the cam... It just wouldn't run right. Sometime in '93, (to make it easier on engine installation) Ford Motor Compan decided to migrate the Mustangs over the 351W firing order. 13726548, as far as I know... Up until 96 Van's and Trucks remained at 15426378 firing order. I hope this helped.
Mountain Pass
Joined: Jan 2003
Posts: 226
Likes: 12
5.0 camshaft
According to my Haynes manual, the 302 trucks switched to the 1-3-7-2-6-5-4-8 firing order for the '95 model year, '94 and earlier used the 1-5-4-2-6-3-7-8
Firing orders for the Mustang's (also from my Haynes manual) all HO V8s use the 1-3... order, all non-HO use the 1-5... order.
Regarding cams, I'm running a Comp 260HR, and I think it's a good cam, good low end, lots of revs. Lost my spec sheet.
Brian
Firing orders for the Mustang's (also from my Haynes manual) all HO V8s use the 1-3... order, all non-HO use the 1-5... order.
Regarding cams, I'm running a Comp 260HR, and I think it's a good cam, good low end, lots of revs. Lost my spec sheet.
Brian
Junior User
Joined: May 2003
Posts: 64
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From: South of Detroit
5.0 camshaft
Stanman1972... This is a truck, porting the heads/manifold may produce some extra HP's but the cost outweights the gain. Unless your racing the truck I wouldn't bother. When ordering a cam keep this in mind ... In 1993 FoMoCo started converting firing orders for 5.0's, it started with mustangs and later (1995 or so) migrated to trucks and vans.... So save your self a head ache, include the firing order when ordering a cam. I had a bad experience.
This is the info you should have ready when ordering a Cam.
Vehicle, Engine, trans, rear end, vehicle weight (not really needed but is good to add), what your intentions are (Racing or pulling/towing), Mass air flow or air density. I hate to beat a dead horse but include the firing order.... Don't be like me, after twenty hours of troubleshooting to find out you have the wrong firing order for your cam.
This is the info you should have ready when ordering a Cam.
Vehicle, Engine, trans, rear end, vehicle weight (not really needed but is good to add), what your intentions are (Racing or pulling/towing), Mass air flow or air density. I hate to beat a dead horse but include the firing order.... Don't be like me, after twenty hours of troubleshooting to find out you have the wrong firing order for your cam.
Senior User
Joined: May 2003
Posts: 125
Likes: 1
5.0 camshaft
definately get the correct firing order, but you could have just changed the injector order and the plug wires around...
that's what we did on my buddy's mustang when he put a truck motor in it and then discovered that the firing order was incorrect on the non-HO cam.
Forrest
that's what we did on my buddy's mustang when he put a truck motor in it and then discovered that the firing order was incorrect on the non-HO cam.
Forrest
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Junior User
Joined: May 2003
Posts: 64
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From: South of Detroit
5.0 camshaft
It may have run, but I was behind the eight ball. My knowledge of EFI is limited and I knew this, it wasn't the right cam. It may have run but the FPR wasn't holding the fuel pressure, I didn't find that out until after I got the correct cam in it. 
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Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
5.0 camshaft
The firing order for the Stang 302/5.0's changed way back in 1982 , not 1993. A 94 F150 ( non Lightning) has a speed density EFI setup. If you deviate too far away from the cam specs, you will run the risk of leaning out the motor, unless you make changes to the program the EFI runs off of or convert the EFI to Mass-air ( same as the Lightnings and 89-up Stangs) The factory setting on the speed density EFI is set to run 15% rich at wide open throttle so keep that in mind when swapping parts.A 94 F150 should have an F4TE roller cam which is a pretty good cam to start with ( specs are .422 intake, .449 exhaust duration is 256 intake and 266 exhaust) a good upgrade is bolting on a set of "Cobra" roller rockers, this will improve the lift specs to .449 intake .476 exhaust and won't screw with the computer too much.
Junior User
Joined: May 2003
Posts: 64
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From: South of Detroit
5.0 camshaft
baddad457 you are correct. For some reason I had mustang on the brain when I was typing. What I should have typed was non-H.O.'s have the firing order 15426378, my knowledge is limited up until '96. I believe all of the (Lets call them standard) standard 5 liters have this firing order. The one thing I learned my experience, you have to maintain the 114 degree lobe seperation with air density EFI. With MASS air flow I hear you have a wider range of cam selections ... Wouldn't you know I'd have to be stuck with air density. A full size van with a 5 liter just doesn't pull like the 5.8 
I hope we could shed some light on your decision.
I hope we could shed some light on your decision.
Mountain Pass
Joined: Jan 2003
Posts: 226
Likes: 12
5.0 camshaft
Gamehunter
The very first thing I did when it was time to modify things with my Bronco was get the FMS MAF conversion kit in there. I didn't want the hassle of trying to figure out how much I could do without screwing up the SD. I also liked the idea of having the sequential port injection over the bank to bank.
I would advise anyone looking at changing the cam in their 302/351s to look into this kit (it's not cheap) or make sure that the cam they choose is compatable with SD.
Brian
The very first thing I did when it was time to modify things with my Bronco was get the FMS MAF conversion kit in there. I didn't want the hassle of trying to figure out how much I could do without screwing up the SD. I also liked the idea of having the sequential port injection over the bank to bank.
I would advise anyone looking at changing the cam in their 302/351s to look into this kit (it's not cheap) or make sure that the cam they choose is compatable with SD.
Brian
