Hey guys,
I tired this post over on ecotecforum.com as well and there wasn't much of a reponse.
Basically, I'm looking for anyone that can give me any feedback on the driveability of these cams.
I'm planing on using them for my build this year, while my car is no longer my DD, I don't want to lose the option of driving it on the street.
I drive the drag strip all summer and I still want to do that for this season, a flat deck trailer is a bit out of the budget for this year.
Any info anyone can provide would be greatly appreciated.
Cheers.
well i put the built motor in a few months ago and they have the stage 3. drove the car for a bit on my old tune and never lost driveability. just as long as you tune for them you will be fine.
Well thats good to hear!
Other than raising idle, did you do anything else to make it run smoother? I have heard advancing timing at idle will help?
Pardon my lack of knowledge, but I'm not overly familar with tuning cams for driveability.
^^ it has the n/a cams in it??
newk, talk to ben wenzel, i think he had those cams.
newt wrote:Well thats good to hear!
Other than raising idle, did you do anything else to make it run smoother? I have heard advancing timing at idle will help?
Pardon my lack of knowledge, but I'm not overly familar with tuning cams for driveability.
idle is bumped up. timing is slightly advanced. id have to grab the log file again. once i did the fuel pump with the upped idle, it seemed to like to idle a bit smoother too. im debating the msd swap to see if that helps too. i tell you what though, you can REALLY feel the kick in the ass when they hit the power band. its a big lurch when you hit it.
BuiltNBoosted wrote:newt wrote:Well thats good to hear!
Other than raising idle, did you do anything else to make it run smoother? I have heard advancing timing at idle will help?
Pardon my lack of knowledge, but I'm not overly familar with tuning cams for driveability.
idle is bumped up. timing is slightly advanced. id have to grab the log file again. once i did the fuel pump with the upped idle, it seemed to like to idle a bit smoother too. im debating the msd swap to see if that helps too. i tell you what though, you can REALLY feel the kick in the ass when they hit the power band. its a big lurch when you hit it.
Does the power band start around 5000rpm like Comp claims?
I ran these cams in Desktop Dyno and it would seem to hit a bit lower than that.
Then again I think your motor has more compression that mine will, which will affect things.
yeah mine start to kick in the ass at about 3800 or so. maybe a touch lower. but like i said once they hit, you know it.
Awesome man, thanks for the info.
I'm very excited to start putting this thing together, I'll make a progress thread when parts start showing up.
newt wrote:Awesome man, thanks for the info.
I'm very excited to start putting this thing together, I'll make a progress thread when parts start showing up.
def have to bump idle up.mine would almost stall out when i pushed the clutch in. i upped it so i wouldnt have to worry.
I'm running them in my car and for streetabiilty i cant say they are the great. I daily drive my car and its not horrible just you have to give it a little gas to get it rolling no biggie. These cams like compression our 10:1 doesnt do them justice really. Mine come in right at 4300 and scream, going to play with the cam gears sometime next week and see if i can get a little more out of her.
Josh Cortez wrote:I'm running them in my car and for streetabiilty i cant say they are the great. I daily drive my car and its not horrible just you have to give it a little gas to get it rolling no biggie. These cams like compression our 10:1 doesnt do them justice really. Mine come in right at 4300 and scream, going to play with the cam gears sometime next week and see if i can get a little more out of her.
Ya, I've found a bit of info and some people had said they are not streetable at all, which got me concerned a bit.
Either they where just guessing (which wouldn't surprise me) or thier definition of streetable is alot different than mine.
I'm going to run the Si Valves which are flat faced and a thinner headgasket, which should up compression a little bit for now. Probally build the bottom end next year, which is why I want the Stage 3's cause there is room to grow.
I suggest you download Desktop Dyno, its very accurate and you can play around with things like cam timing and see the affect it will have on your power curves. Its loads of fun and it takes alot of the guess work out of motor building.
As an example I entered my build for this year, only differance as you can see is one set of lines is the Stage 2 cams and the other the Stage 3 cams. It's not bang on, but I bet it will be pretty damn close.
Before anyone freaks out, the program only outputs HORSEPOWER and TORQUE at the CRANK....lol
Just wanted to clear that up.
Yea I have desktop dyno. My only complaint is starting form a dead stop it just takes a little more pedal effort, at certain speeds i found myself bogging a little and downshifting more often. On the freeway i sometimes sit in a lower gear(people like to go below the speed limit in the fast lane here), but you get it going and the powerband is nice.
I ran cams in my first ecotec that had longer duration and higher lift then the comp cams. It wasnt a bitch to drive but it was fun, this was pre- hp tuners
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