Turbo, supercharged,or nos
Thread Starter
Joined: Oct 2007
Posts: 604
Likes: 1
From: Gainesville FL
Turbo, supercharged,or nos I am building a built 408 for street and strip for a 99 TA m6. I would like to have 600 to the ground , more if possible ! I do drive my car anytime i have a chance . I have kickaround the ideal of a Turbo, supercharged,or nos, and just cant make that choice yet. I would like to hear some opinion and maybe this will help me . Time is coming soon to order that motor . JAN 2 thats the date. then i am comited to it !
Spraying is by far the cheapest, turbo/super is pretty close to the same cost, and WAY fun. No refilling bottles! 600whp on a 408 on any power adder is EASILY doable, so take your pick bud! I'm personally a turbo guy!
nitrousis cheapest. turbos are the most expensive up front and superchargers are the most expensive in the long run depending on your main application. turbos tend to be a lot easier on parts but reguire more expensive parts and depending on how you go about it some custom fab work for hard pipes, headers and stuff. superchargers cost a good amount up front but from what i hear they tend to be rougher on the motor and require a little more maitenence then turbos. whast your budget looking like?
You can do NA in stages..do the 408 then maybe put on better heads, cam and headers likely do right when you build it. Then some spray and you will be at your 600rwhp pretty easily on the 408.
But bottles run empty .Still you could have 475 to 500rwhp NA so not exactly slow.
Now 600rwhp all the time yeah turbos or supers..Both similar in price but you can cut down on it if you find used super or turbo kit. But you are looking at a big build so you better have deep pockets. Engine is going to be 5000 or so. Good heads can cost 2500.
Supers and turbo kits new are going to cost some bucks. And then fuel support,tuning , clutch or trans,rearend. Once you go down the FI road it tends to get really expensive and addictive..ASK ME HOW I KNOW!
See sig!
But bottles run empty .Still you could have 475 to 500rwhp NA so not exactly slow.
Now 600rwhp all the time yeah turbos or supers..Both similar in price but you can cut down on it if you find used super or turbo kit. But you are looking at a big build so you better have deep pockets. Engine is going to be 5000 or so. Good heads can cost 2500.
Supers and turbo kits new are going to cost some bucks. And then fuel support,tuning , clutch or trans,rearend. Once you go down the FI road it tends to get really expensive and addictive..ASK ME HOW I KNOW!
See sig!
Imo I'd say Turbo; for your goal a single or twin setup could easily get you there. Also, not to mention the fact that you'd easily be able to increase or decreaase the amount of boost you'd be running with a boost controller. Best of luck with your decision...
http://www.exoticperformanceplus.com....html?item=798
Check out our D-1SC complete kit at the above link. With a built 408 you can easily make over 700 rwhp with the D-1SC kit.
Here is KP's T/A making a run with the D-1SC.
http://video.ls1tech.com/video/b8b70...3a0019f4d4.htm Bob
Check out our D-1SC complete kit at the above link. With a built 408 you can easily make over 700 rwhp with the D-1SC kit.
Here is KP's T/A making a run with the D-1SC.
http://video.ls1tech.com/video/b8b70...3a0019f4d4.htm Bob
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I vote Turbo or SC. D1SC would be a great choice or a front mount turbo kit running something like an ST-80. As others have stated 600 rwhp on a built 408 is easy np matter which route you go.
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Not sure if the LQ9 or L92 block can be made into a 427? If not then def run an LSx block at whatever CI config you want. Easy 500 rwhp with the right Head/Cam combo NA and then 150-200 shot would be just plain nasty!
Yea I heard NA its fine but for a heavy shot of n20 or FI it is questionable as the cylinder walls would be too thin. Thats good info though about the L92 as I have seen a ton of 414 and 418 builds out of the block but wasnt sure if you could take it to a 427. 408 does seem to be the status quo for the LQ9 based stroker. Is your setup all set now or are you still fine tuning?
I am driving it but not going wot really or taking it up much past a few pounds of boost.
Few reasons..breaking in the 408 have around 400 miles on it now. And while have 60 pound injectors still need to get twin pumps and lines and reg. So keeping the tune super safe..11 to 1 afr and timing like 12 max on 94 pump . The afr and timing don't matter really though if don't go wot.
Alc injection will also be added on.
So just using a fraction of the power and potential which is already making traction non existent in the first three gears havent' been playing in fourth much.
I may go to et street radials my current nittos don't think have a prayer with the torque and power this combo puts out. Turbos spin up very quick as well. And adding small shot of spray to it next season too.
Converting over to 3 bar as well in spring. Car is pretty much put away now might get a couple more days driving thats about it. Winter is coming quick up here now.
Few reasons..breaking in the 408 have around 400 miles on it now. And while have 60 pound injectors still need to get twin pumps and lines and reg. So keeping the tune super safe..11 to 1 afr and timing like 12 max on 94 pump . The afr and timing don't matter really though if don't go wot.
Alc injection will also be added on.
So just using a fraction of the power and potential which is already making traction non existent in the first three gears havent' been playing in fourth much.
I may go to et street radials my current nittos don't think have a prayer with the torque and power this combo puts out. Turbos spin up very quick as well. And adding small shot of spray to it next season too.
Converting over to 3 bar as well in spring. Car is pretty much put away now might get a couple more days driving thats about it. Winter is coming quick up here now.
Nice, didnt realize you still had such low miles on the 408, def good idea to take it easy! Sounds like you have all the bases covered though with your setup. Any reason for the spray, ie cooling, spool time, etc or is it just in case you really want to put the hurting on someone haha? Also, I can imagine traction must be nil up in Canada. Im in Massachusetts and its already down to 27 degrees so im sure you must be in the same boat!
I just finished up the build a few weeks ago. Better late than never and now usually the car would be away by nov 1 but the weather is about what you said maybe a bit warmer. We are in the 20s today but think saturday is a warm 37! This year so far no snow sticking around so am driving it a bit.Its white knuckle with no traction control and it spins them so easily its not funny.
I want the spray for a few reasons. Car will be making the show circuit a bit and direct port if you don't hide it under engine covers is very intimidating even on its own. Combine that with twin turbos and 6.7 litres and its a pretty intimidating package!
And I enjoy intimidating a few people up here..all in good fun. I am not sneaky with my car as you see from the plate although you can only see the top of the intercooler neck with the hood up nothing else is visible .no intercooler sticking thru the front at all very stealth the turbos are on sides of engine also nothing to see from top.
I do have twin turbo metal emblems that am putting on and 408 emblems to install as well. No big deal. Can't be stealthy very long. I got some really loud blow offs and when you open the cutout you car really hear the snails spooling up. Electric cutout.
The spray will help spool them although the big 408 spools them right now anyway. I could go for the upgraded aps kit it would slow spool up maybe 500 rpm but then the spray gives instant spool up. And zero traction..Catch 22. But can use progressive nitrous or progressive boost have to hook up my eboost 2 you can set boost for rpm or gear.
I want the spray for a few reasons. Car will be making the show circuit a bit and direct port if you don't hide it under engine covers is very intimidating even on its own. Combine that with twin turbos and 6.7 litres and its a pretty intimidating package!
And I enjoy intimidating a few people up here..all in good fun. I am not sneaky with my car as you see from the plate although you can only see the top of the intercooler neck with the hood up nothing else is visible .no intercooler sticking thru the front at all very stealth the turbos are on sides of engine also nothing to see from top.
I do have twin turbo metal emblems that am putting on and 408 emblems to install as well. No big deal. Can't be stealthy very long. I got some really loud blow offs and when you open the cutout you car really hear the snails spooling up. Electric cutout.
The spray will help spool them although the big 408 spools them right now anyway. I could go for the upgraded aps kit it would slow spool up maybe 500 rpm but then the spray gives instant spool up. And zero traction..Catch 22. But can use progressive nitrous or progressive boost have to hook up my eboost 2 you can set boost for rpm or gear.
Always a good thing to get it up and running, even if it is right before winter. That way you have most of the major bugs worked out and once spring rolls around you will be good to go! Doesnt sound like you have a sleeper, thats for sure, but hey hiding a twin turbo 408 isnt an easy job lol. Also, a direct port system would look sick under the hood, just out of curiosity though do you think it will work on the FAST (I know there have been some issues with the intakes in high boost cars and with N20 might be pushing it)? Didnt see it in your sig but what rear are you running? S60, 12-bolt, or 9 inch? Street radials should help but my god the tourque coming out of that beast is going to limit your traction regards of what tire you have haha. Def post up some pics when you have them as id like to see how the car sits, the engine bay, and the custom badging when you have it all put together.
