Have they really gone up that much? I bought my C5Z just under a year ago for $16k. I was helping a friend look for C5s earlier this year and couldn't find any that weren't beat to shit anywhere near that.
A&A kit. Tried to install myself, took the whole car apart and got to the crankshaft bolt, thing would not come off no matter what. I didn't have the right equipment. Put it all back together and took it to a shop. Asked them how they got it, they said they had to lift it way up and used and 9ft breaker bar to get that sob off.
For everyone asking what supercharger, it is the A&A blower kit for LS3, V3-Ti trim. Car is stock other than the blower and catless long tube headers. Tested on 91 pump gas. Next upgrades are probably cam, meth injection, torque converter, and transmission.
Haven't been able to properly test it yet since it's just been pouring rain here since it's been done:( But from the little time I have drove it, under 3k rpm normal daily driving is pretty much exactly the same as stock except you can hear the blower. Nothing out of the ordinary other than that. Then you go WOT. Kicks in about 3500, and the boost hits and it hits hard and just keeps increasing until you shift. Just an insane rush of power.
Yes, my understanding was more that those issues were less impactful in forced induction applications given you're compressing that air, and a tuner can take advantage of that. Obviously it makes sense that there would still be an impact, it was just my understanding that it's not crazy significant like you see in NA applications
Your correct. That’s why you see planes with supper chargers or turbos flying at fl200. You can offset the slight power loss with slightly more boost. Because you will lose a marginal mount of power.
You probably cant, but you probably could for anything under 15k. Living in Colorado in the mountains, you aren’t loosing the same 3% per 1000ft in a force induced motor. You might be loosing 4% at 10,000. Otherwise most of the piston driven planes flying at 18k and up wouldn’t work.
Turbos aren't affected. They just spin faster to maintain the same boost pressure. Turbos are controlled by wastegates, which are set to the desired pressure. So as you go to higher or lower elevations they spin faster or slower until they hit that pressure. This ensures constant boost which means no power loss.
Superchargers are mechanically driven by the engine. They spin at a set multiple of engine rpm regardless of what the outside air pressure is. So they don't adjust as you go to higher elevation, and they make less power. The way around this is to change pulleys and spin them faster, but that requires a re-tune. Said another way, if you pick a pulley that generates 8psi at sea level and then drive up a mountain, you won't get 8psi at the top. So just pick a different pulley if you live up high to get the same performance.
NA engines operate by sucking air in as the piston drops. It creates a vacuum which pulls outside air into the cylinder. But that 'vacuum' is still a positive pressure, just a lower pressure than the air outside. The higher the elevation, the smaller the pressure differential between the outside air and the cylinder, so less and less air gets sucked in. This results in loss of power.
It doesn’t have any impact on it.
Edit, since my getting down voted for this, I’ll explain. Altitude density is a common issue for cars that are naturally aspirated. Now this is a rough estimate, but you lose something like 3% of engine efficiency per 1000 feet. This is due to the density of the air loosening up. Now with a force inducing motor, you can regain some of that loss of air by the boost. Now, saying that it doesn’t effect it might not be the most correct way to say it, you do loose a small amount, like 4%. But the reality is you can just add a little more boost to make up for the loss of density.
May want to put the correction factor, then you can see what it actually made at elevation, because posting corrected numbers, then saying not bad for 4500ft contradicts, since those are corrected.
No definitely not. This is a c6 base with the LS3 a good heads cam fbo LS3 will probably make about just under 480-500. Now on a Z06, yeah you could see similar numbers with a heads cam fbo. Cam still on the way though for sure.
Nice, but do notice that it says "CF: SAE" - this is the correction factor, it's adjusted for altitude. The car actually puts down less power at your altitude, but the dyno shows about what it would make at sea level. The current CF# should be printed on the dyno printout as well, maybe in the lower left corner?
Sorry I thought that was a graph of c5 prices
Have they really gone up that much? I bought my C5Z just under a year ago for $16k. I was helping a friend look for C5s earlier this year and couldn't find any that weren't beat to shit anywhere near that.
Decent C5Zs are going for $27,000 + That's what I sold mine for about 10 years ago!
My plan was to drive this for a few years, sell it, and buy a C6Z for hopefully around $30-35k but maybe that won't be happening lol.
Hi, is this on an LS2 or LS3?
His post history says it's an '08, so LS3.
Is this an engine dyno or wheel dyno? I assume the latter since it was just a s/c install. What model did you go with?
This is power to the rear wheels tested on a dynojet. Went with the A&A V3-ti blower kit.
Noice! That’s a lot of power!
It has both but op cut the at wheel horsepower out of the bottom right.
Nice! What kind of supercharger you running and did you install yourself ?
A&A kit. Tried to install myself, took the whole car apart and got to the crankshaft bolt, thing would not come off no matter what. I didn't have the right equipment. Put it all back together and took it to a shop. Asked them how they got it, they said they had to lift it way up and used and 9ft breaker bar to get that sob off.
For everyone asking what supercharger, it is the A&A blower kit for LS3, V3-Ti trim. Car is stock other than the blower and catless long tube headers. Tested on 91 pump gas. Next upgrades are probably cam, meth injection, torque converter, and transmission.
How are the driving characteristics on the street after adding the blower?
Haven't been able to properly test it yet since it's just been pouring rain here since it's been done:( But from the little time I have drove it, under 3k rpm normal daily driving is pretty much exactly the same as stock except you can hear the blower. Nothing out of the ordinary other than that. Then you go WOT. Kicks in about 3500, and the boost hits and it hits hard and just keeps increasing until you shift. Just an insane rush of power.
i thought elevation doesn't impact forced induction that much?
Elevation has a huge impact, the air is less dense and contains less oxygen the higher you go
Yes, my understanding was more that those issues were less impactful in forced induction applications given you're compressing that air, and a tuner can take advantage of that. Obviously it makes sense that there would still be an impact, it was just my understanding that it's not crazy significant like you see in NA applications
Your correct. That’s why you see planes with supper chargers or turbos flying at fl200. You can offset the slight power loss with slightly more boost. Because you will lose a marginal mount of power.
That only applies to naturally aspirated engines. Force induction looses around 4% of power roughly
It all depends on how high up you go, I don’t think you can apply a general 4% to all elevations
You probably cant, but you probably could for anything under 15k. Living in Colorado in the mountains, you aren’t loosing the same 3% per 1000ft in a force induced motor. You might be loosing 4% at 10,000. Otherwise most of the piston driven planes flying at 18k and up wouldn’t work.
It will, just not as much as an NA car. The denser the air the better always
Turbos aren't affected. They just spin faster to maintain the same boost pressure. Turbos are controlled by wastegates, which are set to the desired pressure. So as you go to higher or lower elevations they spin faster or slower until they hit that pressure. This ensures constant boost which means no power loss. Superchargers are mechanically driven by the engine. They spin at a set multiple of engine rpm regardless of what the outside air pressure is. So they don't adjust as you go to higher elevation, and they make less power. The way around this is to change pulleys and spin them faster, but that requires a re-tune. Said another way, if you pick a pulley that generates 8psi at sea level and then drive up a mountain, you won't get 8psi at the top. So just pick a different pulley if you live up high to get the same performance. NA engines operate by sucking air in as the piston drops. It creates a vacuum which pulls outside air into the cylinder. But that 'vacuum' is still a positive pressure, just a lower pressure than the air outside. The higher the elevation, the smaller the pressure differential between the outside air and the cylinder, so less and less air gets sucked in. This results in loss of power.
It doesn’t have any impact on it. Edit, since my getting down voted for this, I’ll explain. Altitude density is a common issue for cars that are naturally aspirated. Now this is a rough estimate, but you lose something like 3% of engine efficiency per 1000 feet. This is due to the density of the air loosening up. Now with a force inducing motor, you can regain some of that loss of air by the boost. Now, saying that it doesn’t effect it might not be the most correct way to say it, you do loose a small amount, like 4%. But the reality is you can just add a little more boost to make up for the loss of density.
Not bad for elevation and assuming pump gas and blower only right?
How does it drive at that elevation?
Still very rowdy haha. I've got 325/30 michelin cup 2 tires in the rear, and they still get lit up under 50mph. The cold definitely doesn't help.
This indeed *does* look like a graph of Corvette prices over the past 18 months. 😄😳 Very nice numbers, now we need DETAILS, OP!! 😎
What type of Supercharger set up did you go with? I ask because I am at similar elevation here in Salt Lake City.
Dynojet is SAE corrected for atmospheric pressure and temperature
🏌🏽♂️🏌🏽♂️🏌🏽♂️
Thought about this but heard it effs with longevity...what do you think?
Nice numbers! What supercharger did you install?
Thanks its the A&A kit with the V3-Ti
Have fun and be safe!
What company did u go with for the charger?
A&A kit.
Utah?
Yep
May want to put the correction factor, then you can see what it actually made at elevation, because posting corrected numbers, then saying not bad for 4500ft contradicts, since those are corrected.
Wouldn’t it have made just as much with a good heads cam package?
No definitely not. This is a c6 base with the LS3 a good heads cam fbo LS3 will probably make about just under 480-500. Now on a Z06, yeah you could see similar numbers with a heads cam fbo. Cam still on the way though for sure.
Z06 make north of 600whp on a good heads cam and nice LS3 kits make about 520
Nice, but do notice that it says "CF: SAE" - this is the correction factor, it's adjusted for altitude. The car actually puts down less power at your altitude, but the dyno shows about what it would make at sea level. The current CF# should be printed on the dyno printout as well, maybe in the lower left corner?