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BIG cam+Good Tuning= DD

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Old Feb 2, 2006 | 11:18 AM
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Default BIG cam+Good Tuning= DD

ok i have used the research button and read as much as i can, and everytime some asks if i get "so and so big cam" can i make it my DD. Well i have seen that many say yes but only with a GOOD TUNE. While other say just go small. I ask because i myself am doing a swap soon, so if anybody with experince with any big cams could give me some feed back or any cam guru help me out.
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Old Feb 2, 2006 | 11:39 AM
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Tuning is the key, but keep in mind the reason why most shops only do WOT tunes and not driveability tunes. A comprehensive driveability tune will sometimes take days or weeks of logging data (over various temperature and weather conditions). You'll need to log data from when the motor's dead cold on a freezing morning to hot restarts on the hottest summer's day. You'll need to monitor things like air/fuel ratios across countless throttle positions and load setting. I could go on and on in regards to what it takes to make a big cam drive like a stocker, but the two main ingredients are time and experience.

Most big shops have the experience to give you a tune that will get you into a "ballpark" of acceptable driveability, but it will still take lots of time to make it perfect for your application. FWIW, Geoff from Thunder Racing got my car to within 90% of perfect street manners with a tune based on everything he's learned over the years of tuning LS1s with big nasty cams. Since then, I've made over 100 revisions to his base tune in the search of the perfect driveability tune. Each tune gets me closer. Each tune gets my car closer to running like stock.

Just don't expect perfection to come fast or cheap.
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Old Feb 2, 2006 | 11:54 AM
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Originally Posted by Patrick G
Tuning is the key, but keep in mind the reason why most shops only do WOT tunes and not driveability tunes. A comprehensive driveability tune will sometimes take days or weeks of logging data (over various temperature and weather conditions). You'll need to log data from when the motor's dead cold on a freezing morning to hot restarts on the hottest summer's day. You'll need to monitor things like air/fuel ratios across countless throttle positions and load setting. I could go on and on in regards to what it takes to make a big cam drive like a stocker, but the two main ingredients are time and experience.

Most big shops have the experience to give you a tune that will get you into a "ballpark" of acceptable driveability, but it will still take lots of time to make it perfect for your application. FWIW, Geoff from Thunder Racing got my car to within 90% of perfect street manners with a tune based on everything he's learned over the years of tuning LS1s with big nasty cams. Since then, I've made over 100 revisions to his base tune in the search of the perfect driveability tune. Each tune gets me closer. Each tune gets my car closer to running like stock.

Just don't expect perfection to come fast or cheap.
Thanks for the info. Ok so correct me if i am wrong but a big cam will never have perfect stock manners but can get damn close with a hell of a tune from someone who knows exactly what they are doing. I mean 90% with in perfect street manners might as well be 100% to me. One more question, Geoff from TR got you to 90% the first time or on of the other 100 visits???
thanks
Joe
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Old Feb 2, 2006 | 12:00 PM
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Originally Posted by Patrick G
Tuning is the key, but keep in mind the reason why most shops only do WOT tunes and not driveability tunes. A comprehensive driveability tune will sometimes take days or weeks of logging data (over various temperature and weather conditions). You'll need to log data from when the motor's dead cold on a freezing morning to hot restarts on the hottest summer's day. You'll need to monitor things like air/fuel ratios across countless throttle positions and load setting. I could go on and on in regards to what it takes to make a big cam drive like a stocker, but the two main ingredients are time and experience.

Most big shops have the experience to give you a tune that will get you into a "ballpark" of acceptable driveability, but it will still take lots of time to make it perfect for your application. FWIW, Geoff from Thunder Racing got my car to within 90% of perfect street manners with a tune based on everything he's learned over the years of tuning LS1s with big nasty cams. Since then, I've made over 100 revisions to his base tune in the search of the perfect driveability tune. Each tune gets me closer. Each tune gets my car closer to running like stock.

Just don't expect perfection to come fast or cheap.
AMEN, brother!
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Old Feb 2, 2006 | 12:02 PM
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What?!? I thought you could tune a car in 5 minutes, and it was good to go

I've spent countless hours tuning my bolt-on *only* car, and I'm just now getting it to where I've wanted it all along.
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Old Feb 2, 2006 | 12:08 PM
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Originally Posted by ls1_cam2
Thanks for the info. Ok so correct me if i am wrong but a big cam will never have perfect stock manners but can get damn close with a hell of a tune from someone who knows exactly what they are doing. I mean 90% with in perfect street manners might as well be 100% to me. One more question, Geoff from TR got you to 90% the first time or on of the other 100 visits???
thanks
Joe
He did the "100 revisions" himself, I assume.
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Old Feb 2, 2006 | 12:14 PM
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I understand that to get it to perfect manners it will take countless hours and lots of mula($$$) but what i am looking for is if the cam can be put in the ball park of almost perfect with one visit and then work from there, or will it take many many visits to the tuner to even get it with in range. Again thanks for the help.
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Old Feb 2, 2006 | 12:21 PM
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With a good tuner you will only need one visit. If you are REALLY picky you may need another one, but one should get you going.
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Old Feb 2, 2006 | 12:43 PM
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Also keep in mind some big cams won't pass emissions even with the best of tunes. (if emmisions is a concern)
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Old Feb 2, 2006 | 12:58 PM
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ok now one last question. Any tuner you guys recommend in Houston or near Houston that could get me near my goal???

Thanks alot for all the help thats been provided.
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Old Feb 7, 2006 | 07:17 AM
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Originally Posted by Patrick G
Tuning is the key, but keep in mind the reason why most shops only do WOT tunes and not driveability tunes. A comprehensive driveability tune will sometimes take days or weeks of logging data (over various temperature and weather conditions). You'll need to log data from when the motor's dead cold on a freezing morning to hot restarts on the hottest summer's day. You'll need to monitor things like air/fuel ratios across countless throttle positions and load setting. I could go on and on in regards to what it takes to make a big cam drive like a stocker, but the two main ingredients are time and experience.

Most big shops have the experience to give you a tune that will get you into a "ballpark" of acceptable driveability, but it will still take lots of time to make it perfect for your application. FWIW, Geoff from Thunder Racing got my car to within 90% of perfect street manners with a tune based on everything he's learned over the years of tuning LS1s with big nasty cams. Since then, I've made over 100 revisions to his base tune in the search of the perfect driveability tune. Each tune gets me closer. Each tune gets my car closer to running like stock.

Just don't expect perfection to come fast or cheap.
Patrick you need to be a salesmen for a shop, lol. This is a very accurate statement in every way!!! Wide open is easy, driveability, like said, will take trial and error. This is why it's so important to have a good tuner close by. That way when something shows it's ugly head the tuner can deal with it.
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Old Feb 7, 2006 | 07:48 AM
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It really matter's on what you think a Big Cam is.230's Cams are fairly easy to tune.240's can be harder but still doable.
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