Any good info on cams?

Straubtech · Jan 29, 2016

The stuff is not rocket science. Diesel or Gas they are all air compressors. Demand on the compressor is set by CID and rpm. Supply is set by airflow capabilities of the induction and the exhaust. The cam is the brain that takes the supply and feeds the compressor. With math we can calculate this out. There is not any black magic to this stuff.

Now since demand is dictated by CID and RPM. If you modify the head to flow more air in and out and don't change the CID or the RPM then the cam has to do less work. So with that thought in our noogin....the cam for a modified head compared to a stock head with CID and rpm being the same....the cam is smaller for the modified head.

sideactiondiesel · Feb 1, 2016

For anyone who is interested in the results-http://powerstrokearmy.com/forums/showthread.php?t=69852

Extended Power · Feb 1, 2016

So it made more power when you put two new Pistons in it, bearings, and a hotter tune....weird.

AirFishAutomotive · Feb 1, 2016

:lookaround:

Extended Power said:
So it made more power when you put two new Pistons in it, bearings, and a hotter tune....weird.

KCTurbos · Feb 2, 2016

So I guess I just realized that it made "more power" on a hotter tune and new cam? That does not seem like a fair way to test it.

cboger · Feb 2, 2016

call ashville engines, they offer an upgraded cam.

sideactiondiesel · Feb 2, 2016

So I guess I just realized that it made "more power" on a hotter tune and new cam? That does not seem like a fair way to test it.

You guys really are not grasping this info huh??? Well here is a post from someone who has taken the time to figure out what we have going on.

Ok so I was just a little curious about something. So I did a little homework. So going off of your track times earlier with the stock cam. On the 250 file you were making an average of 840hp(taking the average of the et. calculator and the mph calculator) and on the 310 tune you made an average of 751hp. So you were in fact losing 89 hp by adding fuel. Now that you have changed up the cam and you GAINED hp with the added fuel(55 to be exact) if you add that to the deficit that you had before the cam. You actually gained 144 hp! Not to mention that dyno is showing a little less power than the track times prove.

Now your getting it! The dyno is only a means for measuring consistent data and baselines. Upon this We know the dyno says we make xxx amount of power but race weight and mph cannot lie.
Because of the time restraints I have during the day because I do this FULL TIME I have little to no time to get on here and write a love letter to all of you and Brandon hit the nail on the head here! lol.

So for the ones that want to gain knowledge then stay tuned. For those of you that want to say stuff like.____

So it made more power when you put two new Pistons in it, bearings, and a hotter tune....weird.

I do not have time to deal with this attitude nor is it fair to the others who are trying to educate themselves for better purposes and their own self worth and personal education.

Also I do not know how many of you get to be around what we do all day long.. but for the guys that have the experience would agree that a brand new fresh motor will actually make less power until broke in. Considering this truck had about 15 miles on it before it hit the rollers I will take my data and deem it as usable as it will probably only improve from here...

Now back to the positive posts
:hammer::rockon::rockon::rockon::rockon: :rockon:

Morgan@Midwest Diesel & Auto · Feb 2, 2016

sideactiondiesel said:
You guys really are not grasping this info huh??? Well here is a post from someone who has taken the time to figure out what we have going on. Now your getting it! The dyno is only a means for measuring consistent data and baselines. Upon this We know the dyno says we make xxx amount of power but race weight and mph cannot lie.

Because of the time restraints I have during the day because I do this FULL TIME I have little to no time to get on here and write a love letter to all of you and Brandon hit the nail on the head here! lol.

So for the ones that want to gain knowledge then stay tuned. For those of you that want to say stuff like.____ I do not have time to deal with this attitude nor is it fair to the others who are trying to educate themselves for better purposes and their own self worth and personal education.

Also I do not know how many of you get to be around what we do all day long.. but for the guys that have the experience would agree that a brand new fresh motor will actually make less power until broke in. Considering this truck had about 15 miles on it before it hit the rollers I will take my data and deem it as usable as it will probably only improve from here...

Now back to the positive posts

:hammer::rockon::rockon::rockon::rockon: :rockon:

I mean this in the most sincere way. I think the reason you are getting flac is because you are not telling them, hey, I made 840hp on xx tune, changed the cam and it made xxxhp on the same tune. I understand that it may have allowed you to utilize more fuel in a bigger tune. But that only paints a certain picture into most peoples minds.

So with nothing changed other than the cam a non cracked piston in a new engine, on the same tune the results were..... "Insert power gains"

Then with the same repaired engine, cam and larger fuel tuning it netted.... "Insert higher power gains"

I think this is what people want to see. Please take this as trying to be helpful and constructive.

Sent from my iPhone using Tapatalk

cboger · Feb 2, 2016

Morgan@Midwest Diesel & Auto said:
So with nothing changed other than the cam a non cracked piston in a new engine, on the same tune the results were..... "Insert power gains"

Then with the same repaired engine, cam and larger fuel tuning it netted.... "Insert higher power gains"

I think this is what people want to see. Please take this as trying to be helpful and constructive.

Sent from my iPhone using Tapatalk

pretty much this. most people gathered you could throw more fuel at it due to the cam, but most people are interested in what it picks up by its self.

Inwayovermyhead · Feb 2, 2016

I think this has turned into how much more power will this cam make vs. other cams. I'm not sure whether that was the original intent of this thread, but I can understand if that is the only goal/factor that some are interested in. For me, I was very encouraged to hear that, yes it will make "more" power, but what made me decide to try it was hearing Chris explain how he approached the profile to actually let the turbo help the piston instead of fight it. I am interested in the all around benefits of that approach. Less lag, less spike and more consistent power across the stock RPM curve. Make power faster without having to turn the engine up. Not to mention lower EGT's, really excited to see that! I know people need solid data before they will spend money, that's a smart decision. But if it's not the cam for you then so be it. I happen to know and trust Straubs's reputation so it's not quite the leap of faith it seems to others for me to try this cam.

KCTurbos · Feb 2, 2016

Let me get this straight.

Test A - possible hurt motor, with possibly cracked pistons, on a lower tune with stock cam

Test B - a motor that was gone through and replaced pistons, changed out the cam, and then loaded up a bigger tune?

If I did that with turbos to prove my turbos made more power then I would be laughed at for posting the same info.

I have personally taken apart a "good motor", cleaned everything, resealed everything, no machine work (except for resurfaced heads), put new rings on the pistons, and then ended up lowering cruising egts 300 degrees and gaining power. I never stuck it on the dyno but it was noticeable. There are just too many variables when you go in that far and replace multiple parts.

I don't mean to come off sounding negative but this data is invalid IMO. Spin it any way you like. I am not biased towards ANY cam. I make/build/test turbos for a living and have spent many hours on the dyno. I "grasp the info" just fine and I am also not naive. The results very well could be "real"... but they dont mean much until a test is done without changing so many variables.

I know its sucks but for this info to be used IMO as valid data then you need to simply swap the cam and run the same tunes. Even if you run a couple tunes for each cam to show it made no more power on other tunes. I personally would not even post that kind of info because I would get flamed hard.

Not trying to be a Dick in any way... but just laying it out there honestly. I grasp all the info just fine... if you don't see why the info you provided is now being questioned... then I think you might not grasp the situation.

Dieselmore · Feb 2, 2016

I agree with kcturbo and midwest. I think we all know the cam will make more power. What a lot of people want to see is the "CAM" only difference. If you where to run the truck on the 250 tune and overlay your old dyno chart with the new chart you would get a full picture of how the cam performs through the rpm range vs stock cam.

Just my .02
On another note it is nice to see more product development coming into the powerstroke world.

AirFishAutomotive · Feb 3, 2016

Inwayovermyhead said:
I think this has turned into how much more power will this cam make vs. other cams. I'm not sure whether that was the original intent of this thread, but I can understand if that is the only goal/factor that some are interested in. For me, I was very encouraged to hear that, yes it will make "more" power, but what made me decide to try it was hearing Chris explain how he approached the profile to actually let the turbo help the piston instead of fight it. I am interested in the all around benefits of that approach. Less lag, less spike and more consistent power across the stock RPM curve. Make power faster without having to turn the engine up. Not to mention lower EGT's, really excited to see that! I know people need solid data before they will spend money, that's a smart decision. But if it's not the cam for you then so be it. I happen to know and trust Straubs's reputation so it's not quite the leap of faith it seems to others for me to try this cam.

paying almost double for a cam because you trust someones word who is not in the industry without anything backed up is not a realistic approach for most. Another problem especially when someone says its different then anything else someone has done.

Straubtech · Feb 4, 2016

Combination has been built for a few years. The "A" test is what the truck dyno'd with the OEM camshaft when first modified. The first "B" test with the my cam the engine lost 2 pistons. First "B" test was aborted. Second "B" test was after repair and first full pull on new camshaft.

Straubtech · Feb 4, 2016

AirFishAutomotive said:
paying almost double for a cam because you trust someones word who is not in the industry without anything backed up is not a realistic approach for most. Another problem especially when someone says its different then anything else someone has done.

If can send you the results of the Duramax program if you like. Just need an email. In 2.5 trim it went from 8-10 place to 1-3 place pulling in Mid-Ohio. On Firepunk's dyno it bested the SoCal package by 90HP and 200#/ft average.

Straubtech · Feb 4, 2016

Inwayovermyhead said:
I think this has turned into how much more power will this cam make vs. other cams. I'm not sure whether that was the original intent of this thread, but I can understand if that is the only goal/factor that some are interested in. For me, I was very encouraged to hear that, yes it will make "more" power, but what made me decide to try it was hearing Chris explain how he approached the profile to actually let the turbo help the piston instead of fight it. I am interested in the all around benefits of that approach. Less lag, less spike and more consistent power across the stock RPM curve. Make power faster without having to turn the engine up. Not to mention lower EGT's, really excited to see that! I know people need solid data before they will spend money, that's a smart decision. But if it's not the cam for you then so be it. I happen to know and trust Straubs's reputation so it's not quite the leap of faith it seems to others for me to try this cam.

If all goes well we should have drag trucks and pull trucks at the April Rudy's Event. Should be PowerStrokes, Cummins, and Duramax. I will be in my PowerStroke.

Straubtech · Feb 5, 2016

I received a cam core for a 6.7L Powerstroke from Tadd at Elite this week. I will be profiling it and will generate some lobes for both unported and ported heads. If all goes well we should have 7.3L, 6.0L, 6.4L, and 6.7L Powerstroke performance cam grinds and testing done my mid 2016.