Chevy Impala SS Forum banner
101 - 120 of 123 Posts

· Registered
Forum Shaman
Joined
·
2,829 Posts
Besides, in the year 2022, if 1,000 hp is your goal, don't you legally have to go with twin turbos? lol
Nah. If you are shooting for a peak number, I think a lot of folks would argue for a huge single.

Personally, I want to see a new set of headers designed for 8 tiny little turbos.
 

· Premium Member
94’ Impala SS
Joined
·
569 Posts
Nah. If you are shooting for a peak number, I think a lot of folks would argue for a huge single.

Personally, I want to see a new set of headers designed for 8 tiny little turbos.
To my own detriment, I am not a turbo fan. sure a single can get you big horsepower, but the lag is horrible. Joking aside, twins are the only way to go, versus a big single.

I wanted to laugh at your comment on 8 tiny turbos, but that would be pretty darn interesting, because of the spool time...
 

· Registered
Joined
·
1,227 Posts
Possible vs practical:
Yeah, if you go E85 AND meth, I could see it "working" fine; even at 1,000hp. That set up is probably not something most would want to daily though. I ran my old 15lb centrifugal set up with a small shot of nitrous as my intercooler. It worked, but again, it was a lot to manage for a daily driver.

I was thinking most people who want a roots blower on the Impala want more of a daily driver vs a race car. I think the intercooler makes the blower more daily driver friendly, and more reliable. More like an OEM application.
Besides, in the year 2022, if 1,000 hp is your goal, don't you legally have to go with twin turbos? lol
I run meth injection on my daily driver, and it's actually pretty good. I don't pay the mileage penalty of running e85, and I only have to fill the meth tank once a week or so.

From a practical standpoint, I think a centrifugal is better than a positive displacement type blower for a daily driver, because of traction. But then, I have a manual so I don't have to wait for it to spool up, either.

And yeah, turbos are the ****. The amount of control you can get on modern turbo systems is nothing short of incredible. You just have to be willing to pay the underhood heat penalty.
 
  • Like
Reactions: nsaness

· Registered
Joined
·
3,115 Posts
Personally, I want to see a new set of headers designed for 8 tiny little turbos.
In a front-engine car, more than two would seem to cross over into diminishing returns.

If the engine is behind the driver, consider that even Bugatti settled for only four?
(With 16 cylinders no less.)

With present technical advancements in turbo performance and response, four seems enough.
A set of headers designed for 8 turbos would cost so much - even before the turbos had been bought, much less installed.
 
  • Like
Reactions: nsaness

· Registered
Joined
·
180 Posts
Possible vs practical:
Yeah, if you go E85 AND meth, I could see it "working" fine; even at 1,000hp. That set up is probably not something most would want to daily though. I ran my old 15lb centrifugal set up with a small shot of nitrous as my intercooler. It worked, but again, it was a lot to manage for a daily driver.

I was thinking most people who want a roots blower on the Impala want more of a daily driver vs a race car. I think the intercooler makes the blower more daily driver friendly, and more reliable. More like an OEM application.
Besides, in the year 2022, if 1,000 hp is your goal, don't you legally have to go with twin turbos? lol
Can you, (or are you), working with "C4 Central" for the manifold adaptor? He seems to have the cad files, and is machining an adaptor to fit a Whipple on the LT1. He could probably machine the blower side for any unit? Keep in mind, you will be best served by using an intercooler (for any supercharger) on the LT1. This is the major flaw that I find with C4 Central's prototype approach (no intercooler provision on the prototype).

I wish you both luck, as I would certainly trade my centrifugal for the low end punch of a roots blower.

That said, I feel like to "do it right" (right - as defined ONLY by my personal taste); you will be budgeting well into LS swap territory, and you can do a blown LS motor with better drivability and more potential for big power. I am sitting here sincerely hoping to be proven wrong. Good luck!
Well the guy I know could stick an intercooler on top of their adapter. Or potentially do like he has done for the LS engines and build the adapter so the intercooler fits inside it. I just need to know what manifold is available. If I get a manifold, this guy can build it quickly. He already has all the support hardware built or designed. He sells a lot of LS adapters. Started out making adapter plates to put the bigger blowers on a mustang or lightning.

He builds his adapters and intercoolers so the intercooler sits inside the adapters hole so it doesn't take up any more room. Hopefully that would be the case on the Impala.
Yes, I want to go roots style blower. If I am making 1,000hp with a roots style blower I am throwing you against the seat at take off. Kinda like a CTS-V with an upgraded blower putting out 1,000hp. My CTS-4 Wagon is only 3.6L but puts out around 400hp at the crank with E85 and it has to hit 3500 rpm before it begins to make power. Its 4400 lbs... The V would be a little heavier and probably same or more than the Caprice/Impala
 

· Premium Member
94’ Impala SS
Joined
·
569 Posts
Well the guy I know could stick an intercooler on top of their adapter. Or potentially do like he has done for the LS engines and build the adapter so the intercooler fits inside it. I just need to know what manifold is available. If I get a manifold, this guy can build it quickly. He already has all the support hardware built or designed. He sells a lot of LS adapters. Started out making adapter plates to put the bigger blowers on a mustang or lightning.

He builds his adapters and intercoolers so the intercooler sits inside the adapters hole so it doesn't take up any more room. Hopefully that would be the case on the Impala.
Yes, I want to go roots style blower. If I am making 1,000hp with a roots style blower I am throwing you against the seat at take off. Kinda like a CTS-V with an upgraded blower putting out 1,000hp. My CTS-4 Wagon is only 3.6L but puts out around 400hp at the crank with E85 and it has to hit 3500 rpm before it begins to make power. Its 4400 lbs... The V would be a little heavier and probably same or more than the Caprice/Impala
There is no true adapter to cut up and use. This is a main reason why a roots blower has only been done in 5 or 6 (gen2 LT1) "one off" situations. The entire adapter is what your friend needs to create.
Where can we see examples of your friends work? Is he a professional, or a hobbyist?
I own a couple of V's as well, and I had read some of your posts on the Cadillac forums. I am not sure how "real world" these discussions are, but I look forward to hearing of a running prototype. Good luck!
 

· Registered
Joined
·
3,115 Posts
Back in the "olden days" when I knew anything about turbos and Garrett and Rajay were words, people ( not me) would point N2OS nozzles at the compressor wheels to help spool up.
I take it that is not a thing anymore ??
The Mercedes AMG SL43 uses turbochargers with electrically assisted motors as anti-lag.
 
  • Like
Reactions: nsaness

· Registered
Joined
·
3,115 Posts
Audi has a system too. If I kept up with BMW, I bet they are doing something similar (or will soon). Lag is what I hate about turbos, so maybe I will become a fan someday soon.
The electric anti-lag basically means turbos will get bigger.

BMW has a five gallon H2O tank in the trunk. Over 4000RpM, it gets misted into the engine.
Timing gets adjusted to take further advantage of the (temporary) charge cooling effect.
 

· Premium Member
94’ Impala SS
Joined
·
569 Posts
The electric anti-lag basically means turbos will get bigger.

BMW has a five gallon H2O tank in the trunk. Over 4000RpM, it gets misted into the engine.
Timing gets adjusted to take further advantage of the (temporary) charge cooling effect.
So the BMW water injection is like meth injection to cool the intake charge and fight detonation? I had that with my Greg Carroll Supercharging system back in the early 90's.
Are BMW owners really going to have to refill a water tank at some frequency to get this added timing? Weird move from a luxury OEM.

Does bmw have an electric assist to pre-spool the turbos and reduce lag? Eliminating lag is what would get me to the party.
 

· Registered
Joined
·
3,115 Posts
So the BMW water injection is like meth injection to cool the intake charge and fight detonation? I had that with my Greg Carroll Supercharging system back in the early 90's.
Are BMW owners really going to have to refill a water tank at some frequency to get this added timing? Weird move from a luxury OEM.
For BMW's M-cars only. M- owners like that kind of thing, I guess.
I've nothing against it, but I wish there were a way to recoup the AC condensation into the H2O tank.
Does bmw have an electric assist to pre-spool the turbos and reduce lag? Eliminating lag is what would get me to the party.
Don't know when they're going to follow Mercedes-AMG with this tech.
 
  • Like
Reactions: nsaness

· Registered
Joined
·
180 Posts
There is no true adapter to cut up and use. This is a main reason why a roots blower has only been done in 5 or 6 (gen2 LT1) "one off" situations. The entire adapter is what your friend needs to create.
Where can we see examples of your friends work? Is he a professional, or a hobbyist?
I own a couple of V's as well, and I had read some of your posts on the Cadillac forums. I am not sure how "real world" these discussions are, but I look forward to hearing of a running prototype. Good luck!
He is a retired machinist and owns his own CNC machine. He has the STS-V blower snout now for my cts project. He cut off like 3" of the snout. I need to find someone to shorten the shaft. His Lathe is no longer working. I was trying to find his business page but here is a video off his home page. He made all these adapters and the intercooler. He also shows one mounted in a vehicle.

(Assuming he has it open to the public)

I am in process of saving to buy a house and once I do that I plan to have a barn/workshop/polebarn with a couple lifts to work on my projects. I found the carb intake manifold (GMPP # 24502592) but I may decide to do what a local dealer suggested and build my own intake if necissary. I can certainly have this guy build a much better setup once I have the "tub" built. In that case it would just be a few pieces of aluminum that he doesn't already do and he has someone that welds up stuff for him and then it could be setup to run one of his systems.

The StS-V setup for my wagon is also on hold until I get a house. That is the project you saw me working on. I had a place I was doing stuff at but the guy that owned the house and I had a disagreement about a year ago and I have been without a place to work on stuff since.
 

· Premium Member
94’ Impala SS
Joined
·
569 Posts
He is a retired machinist and owns his own CNC machine. He has the STS-V blower snout now for my cts project. He cut off like 3" of the snout. I need to find someone to shorten the shaft. His Lathe is no longer working. I was trying to find his business page but here is a video off his home page. He made all these adapters and the intercooler. He also shows one mounted in a vehicle.

(Assuming he has it open to the public)

I am in process of saving to buy a house and once I do that I plan to have a barn/workshop/polebarn with a couple lifts to work on my projects. I found the carb intake manifold (GMPP # 24502592) but I may decide to do what a local dealer suggested and build my own intake if necissary. I can certainly have this guy build a much better setup once I have the "tub" built. In that case it would just be a few pieces of aluminum that he doesn't already do and he has someone that welds up stuff for him and then it could be setup to run one of his systems.

The StS-V setup for my wagon is also on hold until I get a house. That is the project you saw me working on. I had a place I was doing stuff at but the guy that owned the house and I had a disagreement about a year ago and I have been without a place to work on stuff since.
I'm a Tool and Die Maker by trade, so I understand what needs to be done machining wise. My company has a machine shop in house, but it is captive to a large stamping operation here. We don't do any outside work, so I cannot offer any assistance. I don't even run my own projects through the shop, unless it is something really special.
The need to build your own intake is why I recommended the C4 Central person, because he has the cad file for the intake side of the LT1. If you only want the adapter, I bet you could buy that from him. Maybe you could even work out a trade where you give him the file for your little blowers and he could offer that as an option to his customers.
I am not sure how legitimate the C4 guy is, as he has written some silly comments on IG, but he is the only person toying with this roots/LT1 concept besides you.

I see the aluminum pieces your guy is making. Interesting, but not what I would be looking to do with a roots set up.
As I said, I certainly wish you luck on the challenges ahead (y)
 

· Premium Member
94’ Impala SS
Joined
·
569 Posts
Not sure why he wouldn't start with a gen 1 SB Blower manifold??

All this high boost- B body front spacing- tiny short SB Chev crank snout makes me cringe
Great point. As previously pointed out on my posts, my centrifugal set up has some pretty ugly overhang too. The LS motors allow for a much stronger supercharger set up; that is for sure. Add in the difficulty of tuning a supercharged LT1, and what you are going to spend on forged internals, fuel injectors, transmission upgrades, etc, etc, and it seems chasing a big horsepower, supercharged LT1 set up is a dreamers folly.
Automotive tire Motor vehicle Hood Rim Automotive fuel system
 
101 - 120 of 123 Posts
Top