F303 cam

[stevesLX]

Does anyone know where the powerband ends for the F cam. Like I know the intake I have is good for power from 1500-5500 RPM's. I am curious about the cam and whereits range peaks off.

 

[enyawix]

I think your limit is your intake not cam. you want the Edelbrock 5.0 performer RPM intake.
It is like 1500 to 6500

 

[ninety15.0]

With your combo i would shift around 5700-5800. I think the performer dies off around 5500-5700 and the p heads start to die off around 5500. You are probably not making any more power from 5500-6000...but it wont necessarily fall off real bad. I wouldnt shift any higher than 5800...just not worth it.

And no you dont really want the RPM intake...that will bring your power band up past where you're heads stop breathing well. You're setup is matched up alright. A custom cam would probably wring out a little more power and probly some low end torque though.

 

[enyawix]

good point i did not think about his heads

 

[5spd GT]

According to Summit's information your powerband is 2,800-6,000 RPM for the F cam.

 

[jake2582]

ford racing book says 6100 peak hp on the F cam...( just bought one last thursday)

 

[enyawix]

will the F cam power band change with displacement?

 

[jake2582]

a cam's power band will travel downward as displacement increases

 

[thumper460]

The F can be shifted to 6500 on an EFI car.. I would think 6000 will pull a lot of power.. your intake will carry that with ease !! You can over rev the HP rating to drop you back into good torque rating!! JUST BE SURE the springs on the P's are up to the camshaft!! or you WILL be rpm limited!! or could cause a lot of issues!! cool??

Just me......................................................

Thumper

PS: If you need springs.. I sell "Drop in Dual spring Kits" for the 40's and P's.. cool??
Tpr

 

[SVT32VDOHC]

Had one in a 91 GT. GT40 inrons mystery roller rockers/pushord/lifter set up. Cobra intake....it pulled all the way up to 6200RPM's. It felt like it wanted to keep going, but I was scared I was gonna blow up my car!!

 

[enyawix]

With your combo i would shift around 5700-5800. I think the performer dies off around 5500-5700 and the p heads start to die off around 5500. You are probably not making any more power from 5500-6000...but it wont necessarily fall off real bad. I wouldnt shift any higher than 5800...just not worth it.

And no you dont really want the RPM intake...that will bring your power band up past where you're heads stop breathing well. You're setup is matched up alright. A custom cam would probably wring out a little more power and probly some low end torque though.

if gt40 heads die at 5500 on a 331, they are pointless on a 351? I want the limiter at 6000