Crower 4V Racing Cams

[merc]

On page 180 of Muscle Mustangs and Fast Fords they talked about Crower Cams and what performance gains they demonstrated on a S/C car. I was thinking about this mod in the near future, but I don’t have a supercharged car. What I wanted to know is if any members have researched this option or installed new cams.

Quote: form MM&FF
Dyno testing revealed that the installation of the Crower Stage 2 cams increased the power output of the supercharged Cobra by 33hp (peak to peak). The Crower cams also managed the impressive gains without trading low-speed power. The power gains were available throughout the tested rev range.

Originally Posted by cutt
can someone explain the diffference between the two. what makes the cobra manifolds so much better. This tread drifted off topic but lead to some very interesting information. I opened a new tread to create a conversation about cams and head designs. So gentlemen start your engines

[MitchB]

Until you see independent data that confirms this, be careful of what you read in car magazines!

Mitch

[BillyGman]

Another thing to consider also is the possibility that an N/A engine would NOT benefit as much from those cams as a S/Ced engine will. Furthermore, it might very well be that the only reason why that new cam design did increase the high RPM power (or "peak" power) without sacrificing the low-end and midrange power might also be merely because of the S/Cer on the test motor.


So even if the article implies that the cam design would cause a power increase throughout the RPM band for any similar engine, in all reality, that kind of broad RPM power increase might very well only occur w/a S/Ced version of that engine just like the one used in those tests. Buyer beware.

In my experience w/swaping out different camshafts in search of more power that were advertised to be superior cam designs (I tried three different ones on my Vette) what I learned was that in general, if a cam makes more peak HP up top, then it does so simply by moving the powerband up higher in the RPM scale, and therefore sacrifices low-end power. Atleast in N/A engines. And that BTW, is the exact opposite that most people are looking for in their Marauders. The only cams that I know of that will usually add more power throughout the RPM range, are roller cams. So only if the cam in question is a roller cam, and the stock Marauder cams aren't roller cams (I'm not sure if they are) would I believe that those claims might apply to an N/A engine.

[merc]

I found this tread on modular4v.com. Any additional duration really helps our cars. The additional lift is only needed for high performance cars (headers, no cats, high-flow intake, etc).

Thing to keep in mind, the stock bottomend can only handle 7250 to 7500rpms. ANd with a good set of cams with headers/intake, you will want too ogoto 8000 to 8500 all the time. :)

http://www.modular4v.com/forums/ShowPost.aspx?PostID=1002

[BillyGman]

I found this tread on modular4v.com. Any additional duration really helps our cars. The additional lift is only needed for high performance cars (headers, no cats, high-flow intake, etc).

Thing to keep in mind, the stock bottomend can only handle 7250 to 7500rpms. ANd with a good set of cams with headers/intake, you will want too ogoto 8000 to 8500 all the time. :)

http://www.modular4v.com/forums/ShowPost.aspx?PostID=1002Addit ional duration will "help" any V8 engine, but the way that it will "help" is to simply move the power range higher up in the RPM scale. yes, it also yields more power, but it does so higher up in the RPM range, and AT THE COST OF SACRIFICING LOW-END POWER. that's fine if that's what you want Merc. But most Marauder owners are NOT looking for less low-end grunt, but more. Were you being sarcastic about reving these motors to 8500 RPM??? because I wouldn't count on it lasting too long if you plan on that.

[Brutus]

Merc, what happened to Shaft?! Anyway, SHM has some cams advertised for the Mach 1 complete with dyno graphs. I dont remember if he list the cam specs. They picked up significant HP above 4000 however they changed the exhaust at the same time so there is no way to tell how much was from the cams.

[BillyGman]

They picked up significant HP above 4000 however they changed the exhaust at the same time so there is no way to tell how much was from the cams.
Good catch. I agree w/you. I've seen so many magazine articles in which they do the same bait & switch type of test. It's like they're trying to mask the actual results of the product in question by adding on another part simultaneously to the same motor that's being tested. That's salesmanship at it's best. ot I guess i should really say, at it's worst, if you know what I mean.

[Brutus]

Well I e-mailed Crower and asked if the had any info on thier cams foe a N/A application. Here is the response:

No dyno sheets but there a good article in the Oct 2004 issue of MuscleMustangs and Fast Fords on our 4.6L DOHC cams...it's a supercharger profile though.

Thanks for your interest in Crower,
Crower Cams & Equipment Co, Inc
6180 Business Center Court
San Diego, CA 92154-5604 USA
Tel: 619-661-6477
Fax: 619-661-6466

So I guess we are back to square one until someone take one for the team.

[merc]

Merc, what happened to Shaft?! Anyway, SHM has some cams advertised for the Mach 1 complete with dyno graphs. I dont remember if he list the cam specs. They picked up significant HP above 4000 however they changed the exhaust at the same time so there is no way to tell how much was from the cams.

Shaft in on vacation till the end of the month. Thanks for the e-mail to Crower cams. I have been looking around the web trying to see if anyone has used this cam on thier 4V heads. The Mach 1 pony boys think it's a waste of time at this point.

[LightningVic]

I dont have a marauder, but if I did, and I wanted all motor performance, I would probably move the battery to the trunk, so that I could utilize a mustang intake manifold and intake, and then I would run the entire ford FR500 package. With a portmatched extrude honed FR500 intake manifold, with ported and polished FR500 heads, with FR500 cams and valve springs, the kooks headers and an 01 cobra FIPK mildly modified to fit, you could probably see 400 rwhp on the motor (properly programmed of course)

[LightningVic]

Also the FR500 intake manifold has IMRC variable runners, so you wouldnt sacrifice any power down low, and could have a broad torque band.

[merc]

Also the FR500 intake manifold has IMRC variable runners, so you wouldnt sacrifice any power down low, and could have a broad torque band.

I have only one argument about the FR500 setup and that is price. Also I feel obligated to rebuild the lower end of the motor also, and that equals price. But it would be some what economical just to purchase the Cammer 5.0 package, right.

[RCSignals]

Well I e-mailed Crower and asked if the had any info on thier cams foe a N/A application. Here is the response:

No dyno sheets but there a good article in the Oct 2004 issue of MuscleMustangs and Fast Fords on our 4.6L DOHC cams...it's a supercharger profile though.

Thanks for your interest in Crower,
Crower Cams & Equipment Co, Inc
6180 Business Center Court
San Diego, CA 92154-5604 USA
Tel: 619-661-6477
Fax: 619-661-6466

So I guess we are back to square one until someone take one for the team.


No profiles? They did no actual in house testing of their Cams?
Seems odd

[BillyGman]

I would run the entire ford FR500 package. With a portmatched extrude honed FR500 intake manifold, with ported and polished FR500 heads, with FR500 cams and valve springs, the kooks headers and an 01 cobra FIPK mildly modified to fit, you could probably see 400 rwhp on the motor (properly programmed of course)I'm very doubtful that it would acheive 400 RWHP. 350, maybe