please help me with FAST intake
put and leave the ls6 on. it is not holding you back. if you want more horsepower, turn up the boost.... why throw money at making more horsepower when you can just turn the **** or push a button?
Originally Posted by MIGHTYMOUSE
put and leave the ls6 on. it is not holding you back. if you want more horsepower, turn up the boost.... why throw money at making more horsepower when you can just turn the **** or push a button?
I think it's the best to get the car to make the most power with the least amount of boost. Then once the setup is topped out you can start adding more boost. At least that's the way I look at it.
Originally Posted by rufretic
I don't think that's very good advise. Your car is fast so your doing something right but I don't think to just say make more hp by adding more boost makes sense. If so, why didn't you just leave your car stock and then add a turbo and just crank it up?
I think it's the best to get the car to make the most power with the least amount of boost. Then once the setup is topped out you can start adding more boost. At least that's the way I look at it.
I think it's the best to get the car to make the most power with the least amount of boost. Then once the setup is topped out you can start adding more boost. At least that's the way I look at it.
I think what MM is getting at is that if everything else is running fine then why keep throwing money at the fast intake or the wilson manifold, both which are expensive, for only a small increase (relative to the amount of power a TT lsx makes) when you can run an ls6 for $300 and make up for the HP loss with 1-2 more psi? LS6 has been a proven performer up to 20+ psi so why keep messing with more expensive intakes when an ls6 would serve his purpose just fine.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
it is very sound advice. The stock LS6 intake is all thats required for 95% of boosted applications on this forum.
Pete/Plan B's drage Ute in Aussieland, runs 8.2@ 164mph or similar. 408ci with a YSi blower from what I recall.
Its using a stock LS6 intake, and a totally stock, unported TB...and it doesnt even have the throttle stop modified so its gets full throttle....
The stock LS6 intake and TB do not pose any restriction worth worrying about, until extremely high levels of power are achieved...and even then its debatable.
Pete/Plan B's drage Ute in Aussieland, runs 8.2@ 164mph or similar. 408ci with a YSi blower from what I recall.
Its using a stock LS6 intake, and a totally stock, unported TB...and it doesnt even have the throttle stop modified so its gets full throttle....
The stock LS6 intake and TB do not pose any restriction worth worrying about, until extremely high levels of power are achieved...and even then its debatable.
i don't subscribe to the 'make as much horsepower as you can on the lowest boost psi possible' thats what somebody that wants to sell you a bunch of extra stuff says. might as well build a N/A engine and take the boost off completely.
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
I'm not saying the ls6 isn't capable, I just think the 90mm does help make more power at the same boost levels and didn't break because of boost. If he is going to have to purchase a new intake then I agree might as well save some cash and get the ls6 if he doesn't mind pushing a little more boost. I just don't like when people say save money on parts that make more power and just add more boost to get to the same power level.
Originally Posted by MIGHTYMOUSE
i don't subscribe to the 'make as much horsepower as you can on the lowest boost psi possible' thats what somebody that wants to sell you a bunch of extra stuff says. might as well build a N/A engine and take the boost off completely.
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
But wouldn't you agree your going to make more power in the long run? A car making 300rwhp n/a has a turbo that is only good for say 15psi is not going to make as much power as the 400rwhp n/a car with the same turbo because eventually the turbo is maxed out. I guess it's just what way you want to look at it, the 300rwhp could always get a bigger turbo to make more boost but in turn so could the guy with more n/a power and still be ahead.
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Originally Posted by stevieturbo
I dont believe that...
Std one doesnt pose a restriction IMO.
Std one doesnt pose a restriction IMO.
Without proven results, I can only assume more air = more power. But if your right and it doesn't make more power, then I wouldn't even question using an ls6 instead.
Originally Posted by rufretic
Without proven results, I can only assume more air = more power. But if your right and it doesn't make more power, then I wouldn't even question using an ls6 instead.
Originally Posted by MIGHTYMOUSE
i don't subscribe to the 'make as much horsepower as you can on the lowest boost psi possible' thats what somebody that wants to sell you a bunch of extra stuff says. might as well build a N/A engine and take the boost off completely.
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
psi is not a measure of 'stress' on an engine, however it apparently is pretty hard on fast intakes
the torque you put off the crank is a much better measure
More Boost = more backpressure = more head gaskets.
If you like to spend a lot of money to have a pretty intake that isn't proven to make any extra HP on a FI application then do it. Turning up the boost is a hell of a lot cheaper. I like MightyMouses idea.
I'm a cheap bastard though and my car is built mainly out of used parts the previous owners thought were not good enough for their application.
3900lbs, 17psi, 132mph trap speed
I'm a cheap bastard though and my car is built mainly out of used parts the previous owners thought were not good enough for their application.
3900lbs, 17psi, 132mph trap speed
looks like some will agree to disagree. obviously this guy is not a max effort build on the stock engine.. could have spent the money elsewhere to hold more hp
more than likely i just changed my head gaskets because i was nearing triple their design intent as opposed to a restrictive intake.
more than likely i just changed my head gaskets because i was nearing triple their design intent as opposed to a restrictive intake.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Originally Posted by rufretic
Without proven results, I can only assume more air = more power. But if your right and it doesn't make more power, then I wouldn't even question using an ls6 instead.
I swtiched from a ported stock TB and LS6 intake, to an Edelbrock carb intake with 85mmTB and elbow....and from my own logs, my boost actually increased.
This is with a blower setup, so using the whole boost/restriction theory...that means my LS6 intake was flowing better, as boost before and after are more valid than in a turbocharged system, because the airflow source remains constant.
Fuelling requirements at WOT were also virtually the same.
In a turbocharged system you cant compare it the same, as the wastegate by design will always try and meet the same boost level.
And I am not the only person to have simlar experiences.
The stock LS6 intake is a damn good one.
Originally Posted by stevieturbo
Its been proven time and time again. Search the boards.
I swtiched from a ported stock TB and LS6 intake, to an Edelbrock carb intake with 85mmTB and elbow....and from my own logs, my boost actually increased.
This is with a blower setup, so using the whole boost/restriction theory...that means my LS6 intake was flowing better, as boost before and after are more valid than in a turbocharged system, because the airflow source remains constant.
Fuelling requirements at WOT were also virtually the same.
In a turbocharged system you cant compare it the same, as the wastegate by design will always try and meet the same boost level.
And I am not the only person to have simlar experiences.
The stock LS6 intake is a damn good one.
I swtiched from a ported stock TB and LS6 intake, to an Edelbrock carb intake with 85mmTB and elbow....and from my own logs, my boost actually increased.
This is with a blower setup, so using the whole boost/restriction theory...that means my LS6 intake was flowing better, as boost before and after are more valid than in a turbocharged system, because the airflow source remains constant.
Fuelling requirements at WOT were also virtually the same.
In a turbocharged system you cant compare it the same, as the wastegate by design will always try and meet the same boost level.
And I am not the only person to have simlar experiences.
The stock LS6 intake is a damn good one.
No question the ls6 intake is very good. No arguments there. I do know another SC car that removed the ls6 and cnc ported heads. Replaced them with afr's and FAST 90. Same pulleys...lost 2 psi and picked up 25rwhp. On the vette forum....could have been totally the heads...with the head gasket problems we have, I'd love to know for sure...less psi in the intake...all things equal...potentially less head gasket killing back pressure....
If 11 psi is your goal go LS6 all the way....somewhere around 17 -20 psi the head gaskets start going south.
Originally Posted by rufretic
"any way a contact thunderracing and they told me to change the bolts"
Sounds to me like the bolts where never changed, that will break it for sure.
Sounds to me like the bolts where never changed, that will break it for sure.
