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Old 12-03-2014, 02:22 PM   #1
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cams?

planning in going for some aftermarket cams. ive got it down to either mutha thumpers or hot rod cams. price isnt the priblem but i want to be safe with the motor too. i planned to switch the springs phasers and retainers either way if possible.. which would be best?


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Old 12-03-2014, 03:31 PM   #2
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If your going to do that go with a good blower cam


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Old 12-03-2014, 03:33 PM   #3
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im not boosted though..?


07 Shelby GT. 3.55 gears. BBK long tube headers. off road x pipe. frpp gta mufflers. frpp cai. frpp full suspension and bama tune
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Old 12-03-2014, 03:37 PM   #4
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Sorry the Shelby throw me off, then if your going to replace all that I've heard lots of good things from BS cams


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Old 12-03-2014, 04:00 PM   #5
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Bs cams?


07 Shelby GT. 3.55 gears. BBK long tube headers. off road x pipe. frpp gta mufflers. frpp cai. frpp full suspension and bama tune
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Old 12-03-2014, 04:02 PM   #6
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brenspeed.com


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Old 12-03-2014, 04:06 PM   #7
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ohh gotcha! thanks for your input!! appreciate it a ton


07 Shelby GT. 3.55 gears. BBK long tube headers. off road x pipe. frpp gta mufflers. frpp cai. frpp full suspension and bama tune
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Old 12-04-2014, 10:38 AM   #8
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would you say detroit rockers then?


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Old 12-04-2014, 11:29 AM   #9
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I have the hot rod cams and I'm happy with them. The power gains aren't nearly as good as the thumpers or rockers but they work with the stock valve train. They also don't have the low end issues that more aggressive cams have. Can't beat that! Anybody can do that swap, other cams for most people will be a shop install.

The only thing I regret is the lope on the hot rods isn't that great. It kind has that "maybe it's cammed, maybe he's just got a major vaccum leak" sound to it.




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Old 12-04-2014, 12:27 PM   #10
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4.10 fix any low end loss go with a aggressive cam don't do it twice


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Old 12-04-2014, 12:37 PM   #11
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4.10 fix any low end loss go with a aggressive cam don't do it twice


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Artificially, of course. You still won't have the low of a stock mustang with 4:10, and to a lesser extent the hot rod cams.

The hot rods are a good compromise. You don't want to sacrifice too much of the low end in a 4.6 for your DD, as we are already lacking in that department as it is.


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Old 12-04-2014, 12:38 PM   #12
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cams?

The app seriously hates me
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Old 12-04-2014, 03:02 PM   #13
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Sorry but 3vs do not lack on low end your so off


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Old 12-04-2014, 09:59 PM   #14
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Comp Cams 127300
Great power/mild manners
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Old 12-05-2014, 01:42 AM   #15
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Sorry but 3vs do not lack on low end your so off


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Hahaha, wait you're serious?

VVT and charge motion plates are helpful, but they aren't a cure.

Anyone will tell you low end is a downfall of any modular 4.6 and 5.4. It's fairly common knowledge, frank.

It's really a relative term, but compared to the coyote and pushrod v8s the low end of these cars is vastly inferior. There is really no way to talk around that, sorry.


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Old 12-05-2014, 07:44 AM   #16
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Hahaha, wait you're serious?

VVT and charge motion plates are helpful, but they aren't a cure.

Anyone will tell you low end is a downfall of any modular 4.6 and 5.4. It's fairly common knowledge, frank.

It's really a relative term, but compared to the coyote and pushrod v8s the low end of these cars is vastly inferior. There is really no way to talk around that, sorry.


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The 5.4 does not lack in torque. The 4.6 does because of it's small stroke. The 5.4 is nothing but a stroked 4.6


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Old 12-05-2014, 07:47 AM   #17
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Which cam has the most noticable idle?


07 Shelby GT. 3.55 gears. BBK long tube headers. off road x pipe. frpp gta mufflers. frpp cai. frpp full suspension and bama tune
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Old 12-05-2014, 09:41 AM   #18
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The 5.4 does not lack in torque. The 4.6 does because of it's small stroke. The 5.4 is nothing but a stroked 4.6


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I am quite aware of the similitude between the 4.6 and 5.4, however, I stand behind my statement that the 5.4 lacks the low end of the other "2500" motors of its time.

Pushrod was still king during this time period, at least in respect to low end torque.


For cams we have pretty much given you all the options you have.

Detroit rockers = aggressive cam, good (noticeable) cam sound, good high end gains, better drivability than other aggressive cams.

Ford racing hot rod cams: not really aggressive, doesn't sound as good as the car idles at 650, car pretty much drives stock except more power up top, easy to install.

The other choices like, mother thumpers, are just a watered down version of the rockers imo.

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Old 12-05-2014, 09:52 AM   #19
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Quote:
Originally Posted by 07ShelbyGTblack View Post
Which cam has the most noticable idle?


07 Shelby GT. 3.55 gears. BBK long tube headers. off road x pipe. frpp gta mufflers. frpp cai. frpp full suspension and bama tune
Are you looking for a cam to make power?
....or noise?
127300 is not a very lumpy sounding cam, although you can hear it.
But it will make more usable power than some other popular noise making cams.
It's also compatible with stock springs and VVT.
This is a VERY good cam, but it's not radical sounding.
It's the same cam that came in the saleen extreme and is a favorite cam of many popular builders.
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Old 12-05-2014, 09:57 AM   #20
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Quote:
Originally Posted by Fabman View Post
Are you looking for a cam to make power?
....or noise?
127300 is not a very lumpy sounding cam, although you can hear it.
But it will make more usable power than some other popular noise making cams.
It's also compatible with stock springs and VVT.
This is a VERY good cam, but it's not radical sounding.
It's the same cam that came in the saleen extreme and is a favorite cam of many popular builders.

A spring upgrade is required with these cams. Comp recommends http://m.americanmuscle.com/mustang-...prings-24.html...


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Old 12-05-2014, 10:56 AM   #21
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A spring upgrade is required with these cams. Comp recommends Comp Cams Mustang Valve Springs Beehive 26113-24 (05-10 GT) - Free Shipping - AmericanMuscle...


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Yeah, I figured someone would catch that and I'd address it when I got my office.

While desirable, it is not necessary if you use a sensible rpm limit.
I personally ran these cams deep into the 10's on a stock set of heads that came from a Saleen extreme with stock valve springs.
Saleen did not change the springs when they ran these cams either.

So, should you? Yes.
Must you? not necessarily.

If we are talking about a non-forged 4.6 street car shifted sensibly they are fine.
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Old 12-05-2014, 11:20 AM   #22
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Yeah, I figured someone would catch that and I'd address it when I got my office.



While desirable, it is not necessary if you use a sensible rpm limit.

I personally ran these cams deep into the 10's on a stock set of heads that came from a Saleen extreme with stock valve springs.

Saleen did not change the springs when they ran these cams either.



So, should you? Yes.

Must you? not necessarily.



If we are talking about a non-forged 4.6 street car shifted sensibly they are fine.

No kidding? Wish I knew this before I went with the Ford racing cams..

The price is comparable but the performance out of the comps is significantly better. Plus, they are comp cams lol

Working with the stock valve train was the biggest selling point for me.

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Old 12-05-2014, 11:31 AM   #23
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No kidding? Wish I knew this before I went with the Ford racing cams..

The price is comparable but the performance out of the comps is significantly better. Plus, they are comp cams lol

Working with the stock valve train was the biggest selling point for me.

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Just depends on what you want out of them. The Hot Rods sound killer. These don't have nearly the aggressive sound but they work great, especially in an auto car like mine. You can still hear them, just very mild sounding.

These are listed as "Brenspeeds favorite cams" if you look them up there.

Stock drivability, power when you punch it, good with an auto and decent mileage. Good all around cams.

They will pull right up past the limit of the stock valve train though, so that's why they recommend springs. I ran an auto so the shift points were set in the tune and I wasn't able to screw myself that way (and you know I would have).
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Old 12-05-2014, 12:09 PM   #24
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What's the highest you would recommend revving? I have a manual and frequently bounce off my limiter when I'm playing around. I believe it to be somewhere around 6.2-6.3


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Old 12-05-2014, 12:31 PM   #25
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What's the highest you would recommend revving? I have a manual and frequently bounce off my limiter when I'm playing around. I believe it to be somewhere around 6.2-6.3


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That's about it. I'd stay off the limiter though....bouncing off of it is not good regardless of cams.
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Old 12-05-2014, 01:02 PM   #26
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What's the highest you would recommend revving? I have a manual and frequently bounce off my limiter when I'm playing around. I believe it to be somewhere around 6.2-6.3


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Old 12-05-2014, 01:05 PM   #27
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That's about it. I'd stay off the limiter though....bouncing off of it is not good regardless of cams.

Oh yeah I mean I don't bounce off not for extended periods of time or anything. I just kinda hit it since I changed my exhaust. The shift points don't "sound" the same anymore.

This is something to consider looking forward. Thanks for the information


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Old 12-08-2014, 12:18 AM   #28
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I love my 3V but unless the rpms are high it's worthless. It has a V6 feel to it when the rpms are below 3500


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Old 12-15-2014, 03:11 AM   #29
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I'm running Brenspeed Detroit rockers for a supercharged application and let me tell you, if you want it all there is no other cams for you, power, sound, drivability and you don't need to upgrade your springs, all you need is new phaser bolts. I get thumbs up daily at traffic lights and the occasional snarl from tree hugging Prius drivers.


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