Just Asking

[kyle's srt10]

I got my cam install finished up last night and got the truck started up. We are still getting all the air worked out of the coolant system and breaking in the cam before I drive it.. What I am wondering about is that it doesn't really sound any different:dontknow: Do you have to drive it and get the pcm to adapt before it will have the lope at idle? I have the bigger comp cam with a 114 lobe seperation.. I am not complaining hell I haven't even drove it yet but I am curious about the sound...

 

[mmmmtorque]

My truck didnt change dramatically, it was more subtle. Although, you could tell the difference and now the truck sounds sick as hell.

Post dyno results ?

 

[mauiSRT/10]

I noticed a more lopey sound after cat delete and DC flash. I dont have the cam so I cant comment on that.

Other than the headers and cam we have about the same mods Kyle, hows your traction? I imagine the cam will challenge that even more!! I am surprised the stock clutch is still holding up for you.

patrick

 

[azpyroguy]

I got my cam install finished up last night and got the truck started up. We are still getting all the air worked out of the coolant system and breaking in the cam before I drive it.. What I am wondering about is that it doesn't really sound any different:dontknow: Do you have to drive it and get the pcm to adapt before it will have the lope at idle? I have the bigger comp cam with a 114 lobe seperation.. I am not complaining hell I haven't even drove it yet but I am curious about the sound...

A 114 degree wont get you much for a lopey sound... it will be very subtle. To get a decent lope you need to head down towards a 112 degrees... with that you will start getting that nice "chunkety sound" that we all like...

My sand cars LS6 engine had a 116 degree cam in it, I put a 112 degree in it... and it fairly lopey.. but I would like it to be more... however beyond that it would not be drivable at lower engine speeds...

 

[kyle's srt10]

My truck didnt change dramatically, it was more subtle. Although, you could tell the difference and now the truck sounds sick as hell.

Post dyno results ?

I get some dyno results and post them up soon.. I have a new way that we can run the MSD wires that looks bad ass!!:rock: I will post up a thread later tonight or tomorrow and some pics

 

[Nowwhat]

A 114 degree wont get you much for a lopey sound... it will be very subtle. To get a decent lope you need to head down towards a 112 degrees... with that you will start getting that nice "chunkety sound" that we all like...

My sand cars LS6 engine had a 116 degree cam in it, I put a 112 degree in it... and it fairly lopey.. but I would like it to be more... however beyond that it would not be drivable at lower engine speeds...

my ls6 cam is at 110.....driveable and sounds ohhh sooo correct.....

 

[FSTJACK]

OK guys..............

Lobe center does not have a great bearing on how lopy the idle is.
Lobe center is the point where the valve is at the center of it's opening point.

Overlap is the determing factor in regards to the characteristicsof how a cam idles.
Overlap is where the intake and exhaust valves a open at the same time to improve intake charge volumetric efficiency.
All real camshaft measurements are done at .050 lift to give a truer indication of camshaft ramp design.
The displacement of the engine has great bearing on how the engine responds to the camshaft. Also compression ratio, intake manifold design, ect, ect, ect.

 

[kyle's srt10]

My truck is starting to sound quite a bit different now after I have drove it a bit I haven't noticed a big difference in performance really:dontknow: I know that when it was hooked to the scanner it showed to be pretty lean.. I am thinking about changing to a vec III and taking it the PBJ to have it tuned.. What kind of hp numbers could be gained by doing that?? Thanks for all the help:rock:

 

[Dave T(BADVENM)]

I went from 628 rwhp to 672 rwhp just by having Joe tune my truck with the VEC3. Nothing else had changed. Once we added water/meth it went up to 702 rwhp. If we changed out the stock injectors perhaps we could have got more...not sure though.

Of course, your results may vary. Not sure what kind of gains Joe can get you through your setup but be assured that he'll get every horse safely out of it

 

[kyle's srt10]

I went from 628 rwhp to 672 rwhp just by having Joe tune my truck with the VEC3. Nothing else had changed. Once we added water/meth it went up to 702 rwhp. If we changed out the stock injectors perhaps we could have got more...not sure though.

Of course, your results may vary. Not sure what kind of gains Joe can get you through your setup but be assured that he'll get every horse safely out of it

Wow!!! I think thats what I will do them...

 

[mopar_mudder]

Did you do the cam install yourself? If so how bad was it?

 

[AWDisuzu]

you don't necessarilly need more overlap to make an engine lopey. you just need to open the intake valves early so that they open while the piston is still travelling downward in it's stroke (open earlier) There will be less vacuum in the cylinder to suck air/fuel in and as you lower the rpm the engine will struggle to stay running (lopey)

you can make a stock cam lope if you have a DOHC motor and advance the intake cam, however you will need to add overlap to gain the most power (in the mid-high rpm range)
hope this helps!

 

[kyle's srt10]

Did you do the cam install yourself? If so how bad was it?

I didn't do it myself.. I was involved in helping some if that counts..

 

[Prof]

I went from 628 rwhp to 672 rwhp just by having Joe tune my truck with the VEC3. Nothing else had changed. Once we added water/meth it went up to 702 rwhp. If we changed out the stock injectors perhaps we could have got more...not sure though.

Of course, your results may vary. Not sure what kind of gains Joe can get you through your setup but be assured that he'll get every horse safely out of it

Your observed increase in rwhp with the addition of Meth injection may be the first time that anyone has been able to document an increase due to meth...it has been tested and tested, but no one to my knowledge has ever documented a meth attributable hp increase...did you do anything else? Tune, headers, cat delete too or was your dyno after just the meth? Sometimes timing gets changed due to meth injection and that might be the reason for the increase.

If not...super, but we will have to back up your data with someone else doing a before and after meth injection to be sure.

Roy

 

[mmmmtorque]

Your observed increase in rwhp with the addition of Meth injection may be the first time that anyone has been able to document an increase due to meth...it has been tested and tested, but no one to my knowledge has ever documented a meth attributable hp increase...did you do anything else? Tune, headers, cat delete too or was your dyno after just the meth? Sometimes timing gets changed due to meth injection and that might be the reason for the increase.

If not...super, but we will have to back up your data with someone else doing a before and after meth injection to be sure.

Roy

There has been no documented increase on N/A motors....Plenty of documented increase on S/C setups

 

[mmmmtorque]

My truck is starting to sound quite a bit different now after I have drove it a bit I haven't noticed a big difference in performance really:dontknow: I know that when it was hooked to the scanner it showed to be pretty lean.. I am thinking about changing to a vec III and taking it the PBJ to have it tuned.. What kind of hp numbers could be gained by doing that?? Thanks for all the help:rock:

I got 25rwhp out of my cam but had to tune for it. There were significant fuel changes across the RPM's with the new cam.

 

[kyle's srt10]

I got 25rwhp out of my cam but had to tune for it. There were significant fuel changes across the RPM's with the new cam.

Where is the best place to get the vecIII from?:dontknow: How much is that going to set me back

 

[mmmmtorque]

Where is the best place to get the vecIII from?:dontknow: How much is that going to set me back

Unless you find a used one, you need to contact Roe Racing. Believe they are around $1100 shipped.

 

[kyle's srt10]

Unless you find a used one, you need to contact Roe Racing. Believe they are around $1100 shipped.

Can I use it with my factory pcm? Then just sell the stage II flash that I have.. Then wouldn't be out $1100 maybe just $600/700 that would be better for me..

 

[ViperTruck2933]

Can I use it with my factory pcm? Then just sell the stage II flash that I have.. Then wouldn't be out $1100 maybe just $600/700 that would be better for me..

Best case scenario is to use it in conjunction with your Stage II pcm because the Stage II turns off the WOT timer delay and initiates the cooling fan at lower temps.