What's the Best N/A Cam?

Discussion in 'SN95 4.6L Mustang Tech' started by fshawn50, Aug 28, 2009.

  1. 98COBRA281

    98COBRA281 Active Member

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    ^ will any of the NPI cams work with unnotched 4v pistons? i have ported npi's and the edelbrock intake, ive been thinking about some new cams to go along with the intake...
     
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  2. Mike97gt

    Mike97gt it doe snot
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    moving this to tech.. very good tech in this thread


    BTW nick.. any recommendations for cams for my PI head swapped 97

    I know I am going to have to notch the pistons to run any decent sized cam
     
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  3. nickmckinney

    nickmckinney Member

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    I know up to the Stage 2 will work. I have a set of the Stage 3.5 NPI cams here I am combining with a Logan intake, I will let you know what the clearance is with a stock piston (but give me time please)
     
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  4. nickmckinney

    nickmckinney Member

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    If you change the intake valve you can run a much bigger safely. If you notch the pistons you can run pretty much any cam with the stock valve. If on the plastic intake and the PI head I like about 225-230 intake duration installed at 106-108 intake centerline, and a smaller exhaust lobe installed around 108-110 exhaust centerline. This seems to make the most street/strip power so far.
     
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  5. Mike97gt

    Mike97gt it doe snot
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    Sounds good.. I am planning on either some ported factory heads for it or maybe the trick flows..

    When i take the heads off for that I will notch the pistons and whatever heads I get I will make sure they have the valves with a thinner face..

    I heard you were working on a tool for notching the pistons?
     
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  6. nickmckinney

    nickmckinney Member

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    If you get Trickflow heads no need to notch the piston.

    I was working on the tool but its a biach to do so I just decided to offer cheap piston notching in a Bridgeport mill instead.
     
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  7. 98COBRA281

    98COBRA281 Active Member

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    i have after market valves, if that helps, modmax SS swirl polished and undercut..

    what are the specs? currently im running powerheads regrinds 225/230 dur. @.50, 540/540 lift, 112 lsa, and they are NOT degreed

    do you think i would gain some decent power with your cams, and all of my mods(in sig)
     
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  8. nickmckinney

    nickmckinney Member

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    The modmax are nice but on the NPI head they don't help with PTV like the PI head.

    I would take your current cams and advance them 4 degrees first, you can get adjustable crank gears from TFS now for about $50. They will still have the same peak power as before but your midrange will come up a good bit. You should always have more torque than HP with the plastic intake NA I recently learned, if you don't then your cams are installed too retarded and need to be advanced some.

    No need to change cams unless you do go to a different intake and shift the RPM curve higher.
     
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  9. 98COBRA281

    98COBRA281 Active Member

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    i have the edelbrock victor jr. with a ported C&L upper and custom adapter plate.....
     
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  10. Mike97gt

    Mike97gt it doe snot
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    Did not know that thanks..
     
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  11. nickmckinney

    nickmckinney Member

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    You really need to do a proper upper elbow like this for the Edelbrock intake:

    [​IMG]

    He sells them dirt cheap for the amount of labor needed to make it IMHO.

    Wait on the cams, you need bigger ones for sure. I will have my Stage 3.5 NPI together with a Logan intake in the next few months. Then we can see what the powerband really is.
     
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  12. 98COBRA281

    98COBRA281 Active Member

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    who makes them? and what the price on them? i would love to see 350+rwhp N/A........
     
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  13. nickmckinney

    nickmckinney Member

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  14. nickmckinney

    nickmckinney Member

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    For anyone interested, I just posted some matched cam gears in the for sale section for those folks that are unable to degree their own cams and don't want to wonder if they have a +4 advanced gear in their motor when swapping cams.
     
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  15. 98COBRA281

    98COBRA281 Active Member

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    what do you mean by matched?, i never degreed my cams, bucause im not 100% sure how to do it,

    what do these gears do? would they be good for my setup?
     
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  16. nickmckinney

    nickmckinney Member

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    They are QC tested to be at 0 degrees + or - 0.5 degrees on a stock deck height stock head deck engine that it itself was QC against multiple combinations. I can actually pull everything apart and repeat within a 0.5 of a degree every time now.

    Stock specs from Ford seem to be + or - 4 degrees so one of your cams could be 4 degrees advanced and the other 4 degrees retarded. There have been stories of being even further out but I have never seen one more than 4 out.

    I am going to be uploading a cam degree how to shortly, its a bit of work and you need some specialty tools to do it. The average time in car spent on it is roughly 4 hours from the people I am talking with. With my "test jig" I can do it a lot faster but its still a bunch of time to test each gear.
     
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  17. westgastang4.6

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    This has been an excellent thread and it's convinced me to stay npi. But i'm still unsure about which cams i should go with. I may go with the pi cams or maybe something else.
     
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