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Old 09-10-2010, 04:17 PM
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F150 cam

Hi, i am trying to find what cam i should use for my f150. I have a 93 f150 with the 5.0 efi engine. it has stock as a hyd. roller cam

What im wanting is a cam that gives a little better torque. Something that i dont have to adjust anything just slide it on in.

I called comp cams and they gave me a grind # that dosent even exist on their site or anywhere else. thx for your help

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Old 09-10-2010, 04:59 PM
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Do you know what the compression ratio is? Also, manual or automatic transmission, rear gears?
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Old 09-10-2010, 05:12 PM
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It's been over 20 years since I built my 289 and it sure wasn't fuel injected, but as I remember, the numbers on this cam aren't too far off from what I used and it worked out pretty well with stock heads and CR. The EFI is an unknown quantity to me though.

http://www.compcams.com/Company/CC/c...csid=1048&sb=2
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Old 09-10-2010, 05:16 PM
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I didn't think those came with the roller cam but did come set-up for one some where anyway, So has it had a engine change or something how do you know it has a roller in it now? Have you even tore it down yet ?


Cole
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Old 09-10-2010, 05:54 PM
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i was told by the parts store that 93 was the first year for hyd roller. I dont think there was an engine change. However the timeing dosent match up with the picture under the hood but with the book for the year. under the hood has the 92 previous timeing. anyway its an automatic 4x4. stock gears. I just bought the truck but the rear freeze plug on the pass head rusted out so i had to take off the head figured while i was that deep myswell go deeper to the cam.. to get some more torque thx for the help so far!
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Old 09-10-2010, 05:56 PM
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Quote:
Originally Posted by guitar man
It's been over 20 years since I built my 289 and it sure wasn't fuel injected, but as I remember, the numbers on this cam aren't too far off from what I used and it worked out pretty well with stock heads and CR. The EFI is an unknown quantity to me though.

http://www.compcams.com/Company/CC/c...csid=1048&sb=2
that cam is 1200 rpm to 5200 rpm for more torque do i want lower or higher ?
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Old 09-10-2010, 06:09 PM
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Quote:
Originally Posted by Hick_101
I called comp cams and they gave me a grind # that dosent even exist on their site or anywhere else.
So, what number did they give you?
Why is getting information from some of you guys so difficult?
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Old 09-10-2010, 06:10 PM
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Quote:
Originally Posted by techinspector1
So, what number did they give you?
they gave me

xt250hr
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Old 09-10-2010, 06:38 PM
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Yeah, not listed anywhere. Maybe you should call them back and talk to someone else. 250 @advertised equals about a 200 @0.050" and they don't list a cam that mild. Maybe you should also call some of the other grinders.
http://cranecams.com/?show=contactInfo
http://www.crower.com/misc/contact.shtml
http://www.iskycams.com/contactus.php
http://www.lunatipower.com/ContactLunati.aspx
http://www.elgincams.com/contact.html
http://www.compcams.com/tech-help/Support.aspx
http://www.howardscams.com/index.ph...&id=1&Itemid=64
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Old 09-10-2010, 06:40 PM
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thanks for the info
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Old 09-10-2010, 11:02 PM
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Quote:
Originally Posted by Hick_101
that cam is 1200 rpm to 5200 rpm for more torque do i want lower or higher ?
it's hard to say, there are a lot of factors that go into cam selection. Bore and stroke, compression ratio, cylinder head specs, rear gear ratio, manual or automatic, rocker arm ratio and intended use to name a few. The cam I linked to was the mildest cam they showed in a hydraulic roller for your year model engine. Without more info it's hard to nail it down but 210 @ 050 duration on the intake side doesn't sound terribly wild for a 302 especially if you have a stick shift and lower rear gearing....and the compression ratio to run it.

With an automatic and/or higher rear ratio you'd probably be better off with something more in the 200 @ .050 range. Take it with a grain of salt, i'm working from memories of me and a friend building my 289 and his 302 many moons ago. With fuel injection and computers and all this new fangled stuff they have come up with since it might be a bit different.

Good luck
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