APS boosted 402 dyno results (7psi)
Originally Posted by rufretic
Damn Fraser, thats a torquey sumabitch. Hows it feel on the street? Can you get any traction? I can't wait to see what it does with some more boost. Congrats.
thanks Lou
at WOT no traction for first 3 gears, 4th gear it hooks and goes to warp speed mode
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Joined: Jul 2007
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Originally Posted by pakisho
Its a much bigger motor you knucklehead.
100whp with such a small amount of boost is a big deal. If the compariosn was done at higher boost the delta would obviously be much greater. In fact, if the turbos were capable of it, I'm sure you would see close to a 200whp difference at 1 bar of boost.
Originally Posted by nanokpsi
You're right, I have no ideas when it comes to turbo systems
100whp with such a small amount of boost is a big deal. If the compariosn was done at higher boost the delta would obviously be much greater. In fact, if the turbos were capable of it, I'm sure you would see close to a 200whp difference at 1 bar of boost.
100whp with such a small amount of boost is a big deal. If the compariosn was done at higher boost the delta would obviously be much greater. In fact, if the turbos were capable of it, I'm sure you would see close to a 200whp difference at 1 bar of boost.
I don't think the delta would be that great. I am also one of the guys who really aren't impressed and think these numbers are OK. Dyno's lie though so you can never tell.
It's a high SCR 402 with Dart heads and Fast intake. N/A it would probably make 485-500 rwhp or so. 7psi is theoretically 46% more power...and you would arive around 710+ rwhp. I would like to see it with more boost as well, hopefully those numbers shut me up.
The install looks really clean...congrats to the owner as it sure will be a blast to drive.
Marty
Last edited by Mr.MartyStone; Jul 12, 2007 at 10:40 PM.
Originally Posted by pakisho
I dont think this car will make a whole lot more than it is currently making.
Peter
Originally Posted by bluecamaroz28
Either way, those are impressive numbers from 7 psi only. Imagine what will happen with say 17 psi. 
Peter
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Originally Posted by Mr.MartyStone
I don't think the delta would be that great. I am also one of the guys who really aren't impressed and think these numbers are OK. Dyno's lie though so you can never tell.
It's a high SCR 402 with Dart heads and Fast intake. N/A it would probably make 485-500 rwhp or so. 7psi is theoretically 46% more power...and you would arive around 710+ rwhp. I would like to see it with more boost as well, hopefully those numbers shut me up.
The install looks really clean...contrages to the owner as it sure will be a blast to drive.
Marty
It's a high SCR 402 with Dart heads and Fast intake. N/A it would probably make 485-500 rwhp or so. 7psi is theoretically 46% more power...and you would arive around 710+ rwhp. I would like to see it with more boost as well, hopefully those numbers shut me up.
The install looks really clean...contrages to the owner as it sure will be a blast to drive.
Marty
Just a comparison
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346cid, TSP heads, 232/234-112 cam, T76, 6 psi boost: 640 rwhp
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346cid, TSP heads, 232/234-112 cam, T76, 6 psi boost: 640 rwhp
Originally Posted by peter@aps
I agree and I'm sure Fraser has plans to boost up this baby.............he's just getting started and there's plenty left on the table.
Peter
Peter
Maybe i'll have to look at installing it. Ramp it up to 14 and see what happens.
This motor wasn't a dyno queen before the turbo system btw, but always made a mountain of torque.
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FormerVendor
Joined: Dec 2001
Posts: 2,444
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From: WWW.SPEEDINC.COM
I don't think people are understanding why this combination is what it is.
Fraser installed this turbo system onto his existing setup, with the exception of a valvespring and camshaft change, it wasn't designed from the start as a max-effort turbo build.
Personally I am impressed with the setup. Transient response is instantanious and their is no sharp dropoff in power at high rpm, which is what one might expect with larger displacement and turbos that are so responsive.
What would be expected out of a mild 402 and turbos you can fit in the palm of your hand? 1000rwhp at 4psi?
Actually Fraser, maybe the best thing you could do is write a suicide note on the back of your dyno sheet and send your car to Victory Auto Wreckers
Fraser installed this turbo system onto his existing setup, with the exception of a valvespring and camshaft change, it wasn't designed from the start as a max-effort turbo build.
Personally I am impressed with the setup. Transient response is instantanious and their is no sharp dropoff in power at high rpm, which is what one might expect with larger displacement and turbos that are so responsive.
What would be expected out of a mild 402 and turbos you can fit in the palm of your hand? 1000rwhp at 4psi?
Actually Fraser, maybe the best thing you could do is write a suicide note on the back of your dyno sheet and send your car to Victory Auto Wreckers
Originally Posted by Mr.MartyStone
I don't think the delta would be that great. I am also one of the guys who really aren't impressed and think these numbers are OK. Dyno's lie though so you can never tell.
It's a high SCR 402 with Dart heads and Fast intake. N/A it would probably make 485-500 rwhp or so. 7psi is theoretically 46% more power...and you would arive around 710+ rwhp. I would like to see it with more boost as well, hopefully those numbers shut me up.
The install looks really clean...congrats to the owner as it sure will be a blast to drive.
Marty
It's a high SCR 402 with Dart heads and Fast intake. N/A it would probably make 485-500 rwhp or so. 7psi is theoretically 46% more power...and you would arive around 710+ rwhp. I would like to see it with more boost as well, hopefully those numbers shut me up.
The install looks really clean...congrats to the owner as it sure will be a blast to drive.
Marty
150/7 = 21.4 rwhp/# of boost
Seems reasonable to me.
this car idles like stock... it's very quiet, pulls like a ******* freight train from the moment you crack the throttle.
this is one quick car for having a 4200lb raceweight. i'd love to be able to duplicate that on my car. Thumbs up!
this is one quick car for having a 4200lb raceweight. i'd love to be able to duplicate that on my car. Thumbs up!
Originally Posted by INTMD8
Actually Fraser, maybe the best thing you could do is write a suicide note on the back of your dyno sheet and send your car to Victory Auto Wreckers
Anyless of a person would have burned this car by now.
i think he meant it SHOULD make that number... but not with such a tame cam, and through full exhaust.
some people just don't get it. it's a 402 = should make 500+ rwhp right? add 2 turbos - that's 200rwhp more PER TURBO right?
it is what it is - 100% streetcar with stock driveability.
some people just don't get it. it's a 402 = should make 500+ rwhp right? add 2 turbos - that's 200rwhp more PER TURBO right?
it is what it is - 100% streetcar with stock driveability.
This setup is making approx 30 rwhp per pound of boost.
The motor didn't make great power due to throwing it together on Frasers part. The setup NA made 42? rwhp with the NA cam. The car wasn't on the dyno since switching to the 225 Turbo cam....say it lost a few.
based off the above calculation it puts output at over 30rwhp per pound of boost which I feel is pretty good
maybe when it is turned up some of the other can appreciate it more
now lets see if he can drive it down the track tonight
The motor didn't make great power due to throwing it together on Frasers part. The setup NA made 42? rwhp with the NA cam. The car wasn't on the dyno since switching to the 225 Turbo cam....say it lost a few.
based off the above calculation it puts output at over 30rwhp per pound of boost which I feel is pretty good
maybe when it is turned up some of the other can appreciate it more
now lets see if he can drive it down the track tonight
Originally Posted by imslow
this car idles like stock... it's very quiet, pulls like a ******* freight train from the moment you crack the throttle.
Peter
Originally Posted by Fraser@SpeedInc
When did I say it made 485? (NA)
The guy I quoted stated you should have been atleast 485rwhp before the turbos. I was pointing out that even if that were ture, you still gained some good rwhp/psi 
Originally Posted by Fraser@SpeedInc
When did I say it made 485? (NA)
Peter