ATI 5psi numbers wanted
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ATI 5psi numbers wanted Well, I searched around and really didn't find anything I wanted. So what are you guys making with 5psi on a relatively stock LS1 preferably stock heads/cam. LTs okay. I've been told to expect around 400rwhp give or take on a stock F-body. I just wanted to see what some of you guys are getting. I know there is one really nice black SS out there making 471 with 5psi, LTs, and a Weiand intake... So post up what you have. Thanks. 
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Originally Posted by NavySS
Well, I searched around and really didn't find anything I wanted. So what are you guys making with 5psi on a relatively stock LS1 preferably stock heads/cam. LTs okay. I've been told to expect around 400rwhp give or take on a stock F-body. I just wanted to see what some of you guys are getting. I know there is one really nice black SS out there making 471 with 5psi, LTs, and a Weiand intake... So post up what you have. Thanks.
Long long ago, when I had my ATI on 5# with just an FMU/booster pump combo, it made 402rwhp/399rwtq. no tuning stock injectors. All I did was slap the blower/pump/fmu on and go to the dyno. Just FYI
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so what you guys think ill make with a 7 psi kit from vortech. I have heard they dont flow as good as the ati. So maybe a pound or to extra should get it. i just have to show my buddy the benifits of having a f-body compared to a bmw. 
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Yeah I realize most people online usually run at least 7psi. I'm just thinking I want the stock engine to last a long time. When I drive my car I like to get on it a lot. So I'm thinking 5psi won't really affect engine life at all. 7psi will probably shorten it a little. 8psi+ is just a waiting game for inevitable.
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Originally Posted by NavySS
That's awesome for an A4... Hmm... procharger is sounding better and better over heads/cam. Thanks guys.
Originally Posted by NavySS
Yeah I realize most people online usually run at least 7psi. I'm just thinking I want the stock engine to last a long time. When I drive my car I like to get on it a lot. So I'm thinking 5psi won't really affect engine life at all. 7psi will probably shorten it a little. 8psi+ is just a waiting game for inevitable.
Shieeet, I know I'm not gonna be running my car really hard or taking it to the track, but I'm even worried whether they'll be able to tune and dyno it on the stock clutch. I hope so. 5-7 psi is what I'm looking at, too, but I also purchased some valve springs and pushrods for SOME insurance at high rpms + boost. What's your drivetrain situation?
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it almost seems to get a good amount of reliable horsepower is to go with a head and cam package. You can get them a lot cheaper than you can a fi set up and they sound great. But i definatly would rather have a good 10 psi system set on my car. 
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Yeah just for insurance I want to do springs and pushrods. As far as my drivetrain goes... when it breaks... replace it 
. That reminds me of "If it doesn't fit, force it... and if it breaks, it needed to be replaced anyways" Sort of... I plan on 400+ rwhp to eat the clutch quickly if I abuse it. So I'll try to go easy on it until I can do one. I'm not worried about the rear end because I'm not going to launch it hard with slicks. I'm not a drag racer. I'll probably still take it to the track to see what it can do, but I'll go easy on it off the line... **** I don't care about terrible 60s and losing some tenths. I'll sleep at night just fine.
I'm still leaning towards a blower because of ease of installation. Heads and cam aren't that bad, but it requires a lot of time... a lot.
. That reminds me of "If it doesn't fit, force it... and if it breaks, it needed to be replaced anyways" Sort of... I plan on 400+ rwhp to eat the clutch quickly if I abuse it. So I'll try to go easy on it until I can do one. I'm not worried about the rear end because I'm not going to launch it hard with slicks. I'm not a drag racer. I'll probably still take it to the track to see what it can do, but I'll go easy on it off the line... **** I don't care about terrible 60s and losing some tenths. I'll sleep at night just fine.I'm still leaning towards a blower because of ease of installation. Heads and cam aren't that bad, but it requires a lot of time... a lot.
maybe one weekend and you're up and running again for a heads/cam swap. I just put down 418rwhp and 394rwtq cam only with my 233/239 and im not done tuning. I would think that a heads cam setup is capable of 450rwhp without worry of reducing engine life, plus if you ever street race and people look under your hood, they'll know blower, but can't spot heads.
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Nate
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Yeah heads/cam cars can be sleepers for sure. Although since i live in CA, I can't put in a real lumpy cam with a lot of overlap. I could do LTs but I know smogging them will be lots of fun, but it can be done.
That's why if I do heads/cam here it would have to be along the lines of AFR 205s with a Thunder CheaTR cam. That is the ultimate sleeper car... stock like idle, but 400 rwhp. Problem is doing all of that will wind up costing 3 grand with gaskets and other upgrades... pushrods, new lifters, LS2 timing chain, oil pump etc. then I'm pretty much "stuck" at 400... not much else I could do to gain power besides EWP, or another power adder.
With ATI I'll get atleast 400 possibly more, and have some room to grow. The base 5psi kit should only be another grand give or take. So at least trying to do a heads/cam here in Cali isn't a whole lot cheaper than a S/C....
That's why if I do heads/cam here it would have to be along the lines of AFR 205s with a Thunder CheaTR cam. That is the ultimate sleeper car... stock like idle, but 400 rwhp. Problem is doing all of that will wind up costing 3 grand with gaskets and other upgrades... pushrods, new lifters, LS2 timing chain, oil pump etc. then I'm pretty much "stuck" at 400... not much else I could do to gain power besides EWP, or another power adder.
With ATI I'll get atleast 400 possibly more, and have some room to grow. The base 5psi kit should only be another grand give or take. So at least trying to do a heads/cam here in Cali isn't a whole lot cheaper than a S/C....
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Originally Posted by Moparnos
what the hell is a procharger hehehe 
hehehe I still have my boost gauge mounted from when I had the STS abortion... so at least it would go into the boost area with a procharger
. Not like I'm going to base my decision on a stupid little gauge though.Oh, your car is awesome man... It sounds totally wicked... good job.
Maybe I could get the best of both worlds and do the Thunder CheaTR cam AND the procharger....
Last edited by NavySS; Jul 1, 2005 at 10:33 PM. Reason: forgot something...
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isn't that always the way with us speed freaks. You think aw man that will be plenty of power i will leave it at 400. With a head and cam. But then we get gready well i can go 450 to 475 not a problem. Then all the sudden you want a rear end because you broke it. You need a transmission because you broke it. While your at it youll go ahead and put it up to 600 horses. By now you have soo much money involved you are wondering what the hell am i going to do now. I can't hardly drive it on the road and i am broke. So maybe a good base suppercharger or turbo only making a peak of 7#. That will be good for a long while. At least till i get college done. So to all you other guys in the mess i just described rock on. 
I made 450 at the wheels at 6#'s with the ATI kit and 1 7/8 LT's, other than that bone stock. Don at Dez seem to think it would live for a long time at that power level....Its fine cuz now that I have the power everything else needs to be done (torque arm, clutch, rearend, driveshaft)