Im doing the comp coupe cam

[Twister]

Well theirs never really beeen a definite awnswer on how much power the comp coupe cam delivers on the 03-06 SRT10...

With arrow roller rockers and KN filters...My 2003 SRT10 put down 459/492 SAE on a dyno jet....In this configuration I ran a 11.9 at 122 ( best out of around 15 runs) with my own personal FX2 timer ( used it at actual dsrag strip several times and found it to be within 1.5 tenths and 1.5 mph and often dead on my time slip years ago when we had a drag strip on my island)

I then deleted the muffler/cats and ran a 11.7 at 124 mph ( Best out of 40 runs) at the same location with the same timer...However I did not dyno the

-roller rocker
-KN filter
- no cats
- no muffler set up

So I intend to dyno the car with it's current set up that ran the 11.7 at 124 within 4-6 days..

After dynoing the car I will then have dodge install the CC cam as the only additional mod ( the viper tech says tuning is not required)This is costing me $2,100.00...

I will then run the vehicle 10-20 passes at the same location were I have consistently ran 11.7-12.0 at 121-124 mph and see what the results with the CC cam are..

After testing I will dyno the SRT10

 

[Twister]

If your interested in my test data thus far


SORRY THAT NO TRACK IS AVAILABLE ON MY ISLAND AND ALL I HAVE IS MY CIRCUIT CITY FX2 TIMER...(always the same exact location

You can see on my first outing trying to learn the car I sucked pretty badly..LOL

...2003 SRT10...
24 Aug ( kn filters and roller rockers) 459/492 SAE

1-12.7 @ 114
2-12.4 @ 115
3-12.4 @ 116
4-12.5 @ 115.6
5-12.4 @ 115

Man this car ***** I thought...Littel did I no that I was shifting when that damn yellow arrow appeared and really to early at 5500 rpm's or so

Tried shifting a lil later

6-12.4 @ 117.9

And then a lil later

7-12.37 @ 119.0
8-12.25 @ 119.3

And then on my 9th and final run shifting right before red line I clicked off a

9-12.08 @ 118.9 1.93 60 ft 7.9 @ 91.3 1/8
0-60 mph in 4.13

Very happy with the ET but dissapointed in the 119 max trapps I called it a night


25 AUG ( KN filters and roller rockers) 459/492 SAE

I baby shifted on these runs trying to see if I could hit 120 mph trapps

10-12.77 @ 115.6
11- 12.75 @ 118.1
12-12.43 @ 120.2

YEA BABY a 120 trapp..Not to shabby and I called it a night


1 SEP ( kn filters and roller rockers) 459/492 SAE

Tonight I wanted an 11 second pass and was all buisness


13- 12.5 at 115.9 getting warmed up
14- 12.4 @ 117.8
15-12.26 @ 119.2
16- 12.1 @ 120.5
17- 11.97 @ 121.3 60 ft 1.97 7.9 @ 93.5 1/8 0-60=4.05 !!!!!!!!! HELL YEA
18-12.1 @ 120.2
19-12.1 @ 120.1
20- 12.05 @ 122.2 ( highest mph yet)!!!!!!!!!!

21- 12.08 @ 121.4

Then I called it a night...

28 SEP ( kn filters and roller rockers plus cat/muffler delete) ???rwhp???rwt

22- 12.22 @ 119.6
23- 12.13 @ 118.8
24- 12.03 @ 120.6
25- 11.95 @ 121.9
26- 11.78 @ 124.0...0-60 in 3.98...1.95 60 ft....1/8 in 7.77 @ 95.3 mph
27- 11.92 @ 121.7
28- 11.92 @ 121.5

3 OCT ( Kn filters and roller rockers plus cat/muffler delete and removal of rain baffle...rwhp??? rwt???)

29- 12.2 @ 121.9
30- 12.1 @ 120.4
31- 12.0 @ 120.5
32- 11.88@ 122.3 2.0 60 ft

-BOOM ENGINE PROBLEM CARS DOWN-

Engine problem being corrected under warranty...Comp cam install shortly

 

[dragon rider]

Sorry to hear your car is down. At least it will be fixed under warranty. Keep us posted when you get her fixed up with the new cams.

 

[Nader]

I think what the consensus is you should see 15-20 rear wheel horsepower from the cam. I am definitely interested is hearing the results from a live test.

 

[Schulmann]

Really interesting Data !!

My best time so far is 12.52@116 on my 06 Coupe.

I just sent my PCM to DC performance for a fix .... Unfortuantely I won't be able to test it before April. PCM is very restrictive due to anti pollution setup.

 

[Twister]

Really interesting Data !!

My best time so far is 12.52@116 on my 06 Coupe.

I just sent my PCM to DC performance for a fix .... Unfortuantely I won't be able to test it before April. PCM is very restrictive due to anti pollution setup.

If you notice when I first started dragging my SRT10 I dragged it like I did my 99 rt10 shifting early at 5500-5600 rpm's...This resulted in 12.4's - 12.7's at 114-116 mph..

I then started holding the shifts till 5800-5900 rpm's and saw the mph climb dramatically as well as ET decrease to were I was running 12.0-12.2 at around 120 mph VS the previous 114-116 trapps.

Try it out. I beleave many SRT owners have made my mistake and shifted when that yellow light flashed..You can shift early on the gen 2's but with the gen 3 you need to hold till a minimum of 5700 rpm's to pull a fast time/mph

 

[Hamrhead]

Why not get some ported/polished heads while the engine is apart?

$2,100 is a lot of $$$ for just a cam. JMHO.

 

[Viper Specialty]

three words for you;

Degree.

Degree.

Degree.

That cam is not as simple as "plug and play". It needs to be degreed in order to work properly- and that is not something that can easily be done with the stock timing set & cam gear. You really need an adjustable timing set, and it needs to be modified for use in a gen-3 to be 100%.

 

[Twister]

three words for you;

Degree.

Degree.

Degree.

That cam is not as simple as "plug and play". It needs to be degreed in order to work properly- and that is not something that can easily be done with the stock timing set & cam gear. You really need an adjustable timing set, and it needs to be modified for use in a gen-3 to be 100%.

We'll see...But it seems as though many have the cam in their set ups without any trouble..

I think of it as simply going from a 2001 385 HP Z06 cam to a 2002 405 HP Z06 cam...And not big a deal at all..

Hopefully im not wrong..The 1/4 mile times and dyno will tell the real story...

As well 2100$ is a lot for such a week up grade of 10-20 rwhp..But since it's a dodge part and dodge is doing the install my engine will still be under warranty till 2011..Sure i could bye the cam for $400 and pay some one else 1300$ to install it and save my self 300-500$..But if my car ever broke down again and they busted the engine and could tell Id changed some things..Well bye bye warranty

 

[Viper Specialty]

We'll see...But it seems as though many have the cam in their set ups without any trouble..

I think of it as simply going from a 2001 385 HP Z06 cam to a 2002 405 HP Z06 cam...And not big a deal at all..

Hopefully im not wrong..The 1/4 mile times and dyno will tell the real story...

Trust me, you are wrong on this one, and that also means that many of the comp coupe cams installed out there arent right either. Take it from a guy who has built umpteen of these engines, and installed quite a few CC cams, including one right now.

I am not saying it wont WORK if just installed, but it will NOT be degreed correctly. The correct timing for a Comp Coupe cam is 117-118 ICL, and if installed without adjustable timing, you will generally see 113-114, or 121-122 if you offset a tooth. Not off enough to keep it from running well, but it sure wont make the power its supposed to.

Comparing a camshaft from an LSx engine is like comparing apples and oranges, and there are reasons why a CC cam and stock cam are different, timing wise, compared to LSx engines. (and even that is an apples to oranges comparison.)

 

[Dyno Dave]

Never,EVER put a cam in without degreeing it in (unless it's your lawnmower). There can be significant power to be had so make sure it is correct. A stock '00-'06 cam should have the intake centerline at 120-122. You will find a lot of them at 127-128 and it kills the torque curve down low and just makes the right number up top but no more. The comp coupe cam is the same grind as the '96-'99 standard cam but set up for 3 cam sprocket attachment bolts instead of one. It should be installed at 117-118 degrees.

I always degree my cams. Even in a twin-cam engine where it is twice as much work.

When you do it, DO IT RIGHT! Don't let anybody tell it won't matter. IT DOES!

Dyno Dave

 

[Twister]

OK guys..THANKS..Im gonna call dodge after Xmas and see if the 2100 includes them degreeing the cam....

 

[Twister]

So basically dodge can not hit the 117-118 degree mark with out after market parts?????

How much for the adjustable timing set? How much modification?

Would offsetting the tooth for 121-122 degrees still yield power?

 

[Viper Specialty]

So basically dodge can not hit the 117-118 degree mark with out after market parts?????

How much for the adjustable timing set? How much modification?

Would offsetting the tooth for 121-122 degrees still yield power?

Every engine is a little different. Dodge does the equivalent of throwing a dart at a dart board and hoping for the best.

You are around ~250 for a timing set, and if you want it to be dead on balls accurate for a Gen-3, you have about 125 in machining to modify it.

Again, every engine is different. (and now that I think of it, I think I had it reveresed- expect 121-122 drop-in, and 113-114 offset a tooth... but again, not 100% sure which way is which, though I will check in a couple days on the one I am doing now... not that it matters anyway.) I dont think anyone is going to be able to give you a really good guess as to the power difference at 122 vs. 118, as I highly doubt anyone would go through all that work, twice, for a back-to-back run.


All I can say for certain is this:

Will you see a power increase from stock to the CC cam even if degreed @ ~122?
Yes.

Will you see a power increase from an incorrectly degreed CC cam to a correctly degreed CC cam?
Yes.

Is it worth the 375 bucks extra?
Yes... you are laying out roughly 140 bucks/hp as is, even if you only gain 3 HP, it was worth it on paper. Not to mention, the aftermarket parts of better quality than the OEM, and fit MUCH better.


Did you know there is about 1-2 degrees of SLOP in the OEM Gen-3 timing chains? Now you do. Aftermarket? ZERO.

 

[Tusc]

Keep us posted. I'm curious what your final numbers will be. I take it Dodge offers no other cams for the GenIV? I remember GM offering several options for the LT and LS engines.

And word on the -BOOM- ?

 

[Schulmann]

If you notice when I first started dragging my SRT10 I dragged it like I did my 99 rt10 shifting early at 5500-5600 rpm's...This resulted in 12.4's - 12.7's at 114-116 mph..

I then started holding the shifts till 5800-5900 rpm's and saw the mph climb dramatically as well as ET decrease to were I was running 12.0-12.2 at around 120 mph VS the previous 114-116 trapps.

Try it out. I beleave many SRT owners have made my mistake and shifted when that yellow light flashed..You can shift early on the gen 2's but with the gen 3 you need to hold till a minimum of 5700 rpm's to pull a fast time/mph

Shifting too early ... ? Sometimes I hit the rev limiter ....

Take this : in third gear the GEN2 Vipers over take me like rockets .... There is about 50-80hp missing. I think it is due to some anti pollution setup. I have asked DC to modify my PCM so WOT is trigger at 2.5Volt (70% ). I hope their programming will really work ...

 

[Twister]

Shifting too early ... ? Sometimes I hit the rev limiter ....

Take this : in third gear the GEN2 Vipers over take me like rockets .... There is about 50-80hp missing. I think it is due to some anti pollution setup. I have asked DC to modify my PCM so WOT is trigger at 2.5Volt (70% ). I hope their programming will really work ...

Sorry to hear that and I hope it all gets worked out...

My 99 rt10 with no cats/smooth tubes/roller rockers/KN's was trapping 116-119 mph

My 2003 SRT with KN's/roller rockers was trapping 118-121

As a good faily equal modded comparison

 

[Joseph Dell]

Ok... I'll bite. What are the specs on the comp coupe cam that make it so desirable?

JD