Comp Cams for the S550

[Poppacapp]

DIY is free...

Bah... Me no like. Me watch tv while they do it.

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[Todd15Fastback]

... lol.... a loss of 60 foot pounds of torque... I need to make you my new drug dealer... link to the 2015 comp cam dyno graphs or it never happened.. 60 lol youre f'ing crazy..

:cheers:

 

[Tommy V]

Yea i could see low end tq suffering a little for high end hp,but no way that much.No one would buy those cams with those numbers.Their are trade offs but not that drastic!!!!!!!.

 

[1320']

Where the cams lose power is a lot of shops install phaser limiters and lockouts because they don't know how to tune timing and valve events with a big cam.
Shaun at AED tunes for Comp Stage 3's on the S197 coyotes that has all the power gains and none of the torque loss. If you're losing TQ it's because your tuner isn't good enough.

 

[Grimace427]

Where the cams lose power is a lot of shops install phaser limiters and lockouts because they don't know how to tune timing and valve events with a big cam.
Shaun at AED tunes for Comp Stage 3's on the S197 coyotes that has all the power gains and none of the torque loss. If you're losing TQ it's because your tuner isn't good enough.

I agree with this to an extent. Some cams require phaser limiters to avoid piston-to-valve contact. However there are plenty of cam options for the Coyote that do not require limiters and don't have any major drawbacks in torque production. For the '11-14 Coyotes you could install 'mini-CJ' exhaust cams which do nothing but increase duration from 260 to 290(stock 11mm lift) and they offer significant gains with no torque loss.

 

[RubyRedBoost]

We truly wont know till someone forks out the money. Comp states there is 50-60 hp in just these new CR series cams. Lingo such as upper rev range and peak output make me feel these are like the NSR style. I've always been a fan vvt/vvel or whatever. Partial lock out and phaser limitations seems like a waste.

 

[arieso94z28]

Because Comp Cams posted the results. You lose considerate torque under the curve like a lot guys. I'm not just spitting crap. They posted graphs and their results with stage 2. Stage 3 are still in R&D finalization. But I'd rather have 450/420 with bolt ons than 465/360 with cams. Torque gives grins, that grunt is what makes us all smile.

This is the first I have heard of the results. Can you post a link as to where you found or read these results????

 

[RubyRedBoost]

I will concede that after looked for the information this morning it was NSR results I found that killed torque till after 5k rpm. I had also had a few too many brews and apologize for spreading misinformation. I eagerly wait the results and hope to be proved wrong. Under the curve power is what I like.

 

[1320']

I agree with this to an extent. Some cams require phaser limiters to avoid piston-to-valve contact. However there are plenty of cam options for the Coyote that do not require limiters and don't have any major drawbacks in torque production. For the '11-14 Coyotes you could install 'mini-CJ' exhaust cams which do nothing but increase duration from 260 to 290(stock 11mm lift) and they offer significant gains with no torque loss.

I dig the full on CJ cams, 13mm and 290. Ford has stated those cams fully meet the long term durability requirements for OEM. They were actually going to be the original Boss cams

 

[Todd15Fastback]

I will concede that after looked for the information this morning it was NSR results I found that killed torque till after 5k rpm. I had also had a few too many brews and apologize for spreading misinformation. I eagerly wait the results and hope to be proved wrong. Under the curve power is what I like.

:cheers:

 

[Grimace427]

I dig the full on CJ cams, 13mm and 290. Ford has stated those cams fully meet the long term durability requirements for OEM. They were actually going to be the original Boss cams

Yup they are pretty nice, requiring only some minor machining of the heads for clearance. Pretty pricey compared to just the Mini-CJ exhaust cams and I've only seen one person do the full CJ swap and didn't get the results he had hoped for.

I'm at work but I'll try to find his thread on the older forum when I get the chance.

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