FRPP Hot Rod Cams Installed

Discussion in '2005 - 2009 Specific Tech' started by MikeysOTP, Aug 4, 2008.

  1. From all the numbers and clips I've seen, the only Comp Cams that have the same choppy idle require springs and the gains seem to be very similar up top, though they lose a little down below. Now I don't know about any new grinds, this is information I gathered in December. The Comp NSR cams that Brenspeed sells do not have a noticeable difference in idle and gain 15-20 RWHP on a basic bolt-on car and lower gears are highly recommended.

    The problem with most of the Comp Cams and BBR is that to get the rough idle and gains, they increase the lift. That's the reason for the need for springs. The FRPP Hot Rod cams increase the exhaust/intake overlap, and lift is only increased by 1mm. So that's how you get the big block sound without having to replace the springs.
  2. So basically you're saying is the Hot Rod cams sound better, are NSR, cost about the same, and get comparable #s to a set of springs required Comp cams?

  3. The comp stage III has a lopey idle and may give a little more HP up top but they require springs and you'll probably lose some low end.

    The FRPP cams look like the best all around. NSR, gains across the board, and a mean idle. If I do cams I'll definately do these, would be nice to see another car on the dyno though to make sure they give those kinds of gains consistently. A lot of it is probably in the tune.
  4. I've been wondering if the baseline was with his previous tune, or with a completely stock car.
  5. Not to high jack a thread, but my question is how would these cams work in a S/C engine. I have a MagnaCharger running the stock 3.3" pullie and have belt slip now so I am looking for something other than a smaller pullie to boost up my car just a bit more. Oh yeah and that sound isn't bad, I mean as it's kinda ok if your into that sorta thing... Good lord I want that sound!!!
  6. Black Sheep is right. From everything I've seen, these are the best all around cam for NA applications in terms of cost, performance, and sound.

    These would not be the right cams for a FI application. You'd want a custom grind FI cam.
  7. custom blower cams are available from a few vendors.
  8. Great numbers...

    Great numbers... Remember guys, Mustang Dyno's run about 10-15% below Dynojet (look at mine on both in sig.)

    so, on a Dynojet theoretically would be about 340hp.

    :Track:please post et before and after; Im curious most as to et drop:D
  9. if you install cams and have any issues related to the valvetrain, you are footing the repair bill. same as any other aftermarket part.
  10. I'm not claiming to be a rocket scientist, but going by what I've read. In the article, JDM cliams by having the phase limiters, it allows the cams to work with in the priameters of the cvt. The cvt helps with lowend and midrange, with the cams working with the cvt allows the car to keep it's low and mid range while increasing hp at the top. The ford hot rod cams also make the claim that you do not loose lowend or mid range. Maybe you can explain better than JDM how it is that with the new cams with phase limiters that work with the cvt don't loose bottom end or mid range, the same claim made by ford on the hot rod cams that doesn't use phase limiters. In theory, when you gain power at the top, it suffers else where. Now both of these cams claim that isn't the case. So what is there secret in building topend hp without sacrifiing lowend or midrange? I'm just trying to understand how all this works, cause now I'm getting confused. It's like having your cake and eating it to, so how do they build topend hp without sacrificing lowend or are they fibbing and you do loose lowend, what gives?
  11. I am no expert either, but let me give this a shot.

    Variable Cam Timing (VCT) works by adjusting the timing according to throttle position, RPMs, and load. This is a great way to make good torque down low by retarding the cams as well as increasing fuel mileage. The fact that people are getting crazy gas mileage with these heavy, powerful cars is a result of VCT, not some kind of magic.

    The stock VCT is able to retard the cams as much as 60%. Phaser limiters are used to limit the amount of retard to 20%. These are used to accomodate cams that have either higher lift or longer duration to the point that at 60% retard, the cams and valves will have an undesired meeting. I don't know the specific differences between all of the cams, what I do know is that FRPP says that limiters are not needed for the Hot Rod Cams, and I haven't heard of any problems to the contrary with them. My car runs great and has already been through every situation that I will throw at it: burnouts, powershifts, cruise control, low revs, high revs, etc.

    I have a feeling that the article you mentioned about limiters increasing torque was in comparison to lockouts. Many people were using these to lock out the VCT altogether with cam swaps. The limiters are a fairly new way to avoid locking out the VCT totally. So yes, in this case limiters would increase power.

    I do not claim anything here to be factual, this is just the way I understand it, so take it for what it is worth.
  12. You had me at Cam. :D
  13. the comp cams limiters limit the physical movement of the cams. you can (and still need to with these limiters) limit the amount of movement within the tune to 20*. the comp limiters adress the issue with mechanical limits to be safe. there is the possibility that some instances when the VCT cant limit the movement fast enough to compensate.

    check this link for all the info from comp directly...

    Ford 3 Valve Camshafts

    here is a copy/paste directly from that page. there is more to read on the website though.

    hope that helps some questions on these. i dont claim to be an expert on these, as i am learning as info becomes available like most of us here.
  14. You don't have to sacrifice low end power to gain top end. Take an aftermarket air intake for example. You gain up top, and don't lose anything down low.
  15. with camshafts it is typical that to build power up top, you are moving the entire power range up, which loses power down low. the entire power band shifts, not just extending to the upper RPM.
  16. Thanks Mickey, that gives me a better understanding on what the phase limiters do and how it works with the vct.
  17. This is why it is recommended to run lower gears (usually 4.10+) and minimum 3000 RPM stall if auto as well to help with the shifted up power band.
  18. very good point!
  19. +1 ...get ready to launch at well above 5K :D to keep it in its sweeeeet spot:nice:
  20. They sounded great Mike, nice job...Thanks for stopping at the showroom with the flyers, they came out great!!!..