Has anyone seen a positive displacement blower for an LT1?
#21
I found his, if I had my car back then I would've snapped that thing up in a heartbeat. I'm honestly considering pulling apart a spare manifold in my garage and looking into making my own intake at this point. If it's doable, that would be a huge step in the right direction for us.
#22
I think the major problem you will have with a stock manifold is that the injectors angle inward. This limits the width of a SC body you can fit.
You could possibly have the injector holes welded up then have them re-machined vertically?
The billet manifold he made would be quite pricey for the LT1 market...but that's where all the money would be. You could have a manifold made to fit specific Eaton SC's that came on say 03/04 cobras and find those reasonably priced all day long.
If you spent $3000 on the manifold alone (judging by machine work on it I bet it's more than that), then another couple hundred on a used SC plus misc stuff like injectors. That may be feasible.
You could possibly have the injector holes welded up then have them re-machined vertically?
The billet manifold he made would be quite pricey for the LT1 market...but that's where all the money would be. You could have a manifold made to fit specific Eaton SC's that came on say 03/04 cobras and find those reasonably priced all day long.
If you spent $3000 on the manifold alone (judging by machine work on it I bet it's more than that), then another couple hundred on a used SC plus misc stuff like injectors. That may be feasible.
Last edited by smitty2919; 10-02-2017 at 08:37 AM.
#23
I think the major problem you will have with a stock manifold is that the injectors angle inward. This limits the width of a SC body you can fit.
You could possibly have the injector holes welded up then have them re-machined vertically?
The billet manifold he made would be quite pricey for the LT1 market...but that's where all the money would be. You could have a manifold made to fit specific Eaton SC's that came on say 03/04 cobras and find those reasonably priced all day long.
If you spent $3000 on the manifold alone (judging by machine work on it I bet it's more than that), then another couple hundred on a used SC plus misc stuff like injectors. That may be feasible.
You could possibly have the injector holes welded up then have them re-machined vertically?
The billet manifold he made would be quite pricey for the LT1 market...but that's where all the money would be. You could have a manifold made to fit specific Eaton SC's that came on say 03/04 cobras and find those reasonably priced all day long.
If you spent $3000 on the manifold alone (judging by machine work on it I bet it's more than that), then another couple hundred on a used SC plus misc stuff like injectors. That may be feasible.
#24
Before you go cutting, simply investigate the SC you plan to use and how wide and tall the body of it is. Next will be snout length.
There are simple/key parameters you need to figure out before doing any cutting.
For the DIY'er without CNC capabilities, one COULD make a manifold out of aluminum plates and round spacers properly welded and placed. I have a manifold 80% designed in my head using a M112 unit. Next step would be to take measurements off the spare intake/heads/shortblock I have in the garage. If you look close at that guys initial red intake, it's fully fabbed up. Measurements like head to valley angle, intake/exhast port layout (injector layout should simply be in a runner) and manifold bolt hole spacing.
Couple hundred dollars in 1/4" aluminum flat plate cut to size, another couple hundred for someone to weld it properly then $400-500 in a used SC??
There are simple/key parameters you need to figure out before doing any cutting.
For the DIY'er without CNC capabilities, one COULD make a manifold out of aluminum plates and round spacers properly welded and placed. I have a manifold 80% designed in my head using a M112 unit. Next step would be to take measurements off the spare intake/heads/shortblock I have in the garage. If you look close at that guys initial red intake, it's fully fabbed up. Measurements like head to valley angle, intake/exhast port layout (injector layout should simply be in a runner) and manifold bolt hole spacing.
Couple hundred dollars in 1/4" aluminum flat plate cut to size, another couple hundred for someone to weld it properly then $400-500 in a used SC??
#25
TECH Addict
Get someone to 3d scan the bottom of a stock manifold and then use a 3d printer to make a plug.. if your ok with a hood cut, use solid works to stretch the manifold up a inch or two and put the injectors under the blower in a side shot.. Would also help the mechanics of clearing the water pump..
#26
If I can figure out how to post a video I can of mine running!!
have a ton of pics I can add too...
I like to make things people (whipple) who say it can’t be done...
Had Bell intercoolers make me a custom intercooler brick and had it fit under the stock cowl with a 2.9 whipple...
sold it at the time to fund my new car at the time.. wish I would have kept it
if I make another one one day I would do a whipple still and make it a better design
have a ton of pics I can add too...
I like to make things people (whipple) who say it can’t be done...
Had Bell intercoolers make me a custom intercooler brick and had it fit under the stock cowl with a 2.9 whipple...
sold it at the time to fund my new car at the time.. wish I would have kept it
if I make another one one day I would do a whipple still and make it a better design
#27
Get someone to 3d scan the bottom of a stock manifold and then use a 3d printer to make a plug.. if your ok with a hood cut, use solid works to stretch the manifold up a inch or two and put the injectors under the blower in a side shot.. Would also help the mechanics of clearing the water pump..
I use SW on a daily basis and run a 3d printer at work. Printing a manifold will not be cheap simply due to it's size. BUT even before printing you need someone to accurately layout a manifold dimensions then create a proper model to print it...
Obviously people got by before the world of solid modeling programs etc, but any of your CNC mills or 3D printers require a model first. Like I said, for the true DIY backyard guy, some flat plate/cutting tools/welder could get you a long way.
If I can figure out how to post a video I can of mine running!!
have a ton of pics I can add too...
I like to make things people (whipple) who say it can’t be done...
Had Bell intercoolers make me a custom intercooler brick and had it fit under the stock cowl with a 2.9 whipple...
sold it at the time to fund my new car at the time.. wish I would have kept it
if I make another one one day I would do a whipple still and make it a better design
have a ton of pics I can add too...
I like to make things people (whipple) who say it can’t be done...
Had Bell intercoolers make me a custom intercooler brick and had it fit under the stock cowl with a 2.9 whipple...
sold it at the time to fund my new car at the time.. wish I would have kept it
if I make another one one day I would do a whipple still and make it a better design
#28
Moderator
iTrader: (33)
There was an article in Pontiac High Performance, GM built a 4.3 LT1 with a Roots blower in a 93 Formula. It was a test mule used to look at the idea. That car met the crusher long ago like many GM test mules did.
A couple folks from back on CZ28 used Eaton units, Alvin Anderson had one for a while.
A couple folks from back on CZ28 used Eaton units, Alvin Anderson had one for a while.
#29
I can model the unit if someone game me a dimensional analysis of it. Our hand held scanners would make quick work of it as well but that would have to be billed out.
#32
It doesn't really sit under the cowl. It is slightly forward of the cowl. You can also lower the K member to gain a little more clearance.
Last edited by smitty2919; 11-19-2017 at 03:28 PM.
#33
11 Second Club
#34
Don't get too happy about that one...what you see there is many hours in Solidworks along with a one off custom machined billet lower manifold AND custom made CF elbow...
His first version was more of a DIY home brew setup, but still not on a level to be mass produced and sold. The eaton SC sount was removed and machined shorter...there was a custom adapter plate welded to the back to adapt a stock TB...
His two versions are what makes me keep plugging away at the idea because I know it's able to be done.
His first version was more of a DIY home brew setup, but still not on a level to be mass produced and sold. The eaton SC sount was removed and machined shorter...there was a custom adapter plate welded to the back to adapt a stock TB...
His two versions are what makes me keep plugging away at the idea because I know it's able to be done.
#35
Don't get too happy about that one...what you see there is many hours in Solidworks along with a one off custom machined billet lower manifold AND custom made CF elbow...
His first version was more of a DIY home brew setup, but still not on a level to be mass produced and sold. The eaton SC sount was removed and machined shorter...there was a custom adapter plate welded to the back to adapt a stock TB...
His two versions are what makes me keep plugging away at the idea because I know it's able to be done.
His first version was more of a DIY home brew setup, but still not on a level to be mass produced and sold. The eaton SC sount was removed and machined shorter...there was a custom adapter plate welded to the back to adapt a stock TB...
His two versions are what makes me keep plugging away at the idea because I know it's able to be done.
#36
I'm not sure I will complete this since I need to look long term goal of my car. I autocross and want to get into road race, so a roots blower may not be most efficient method (due to heat) compared to a stout HCI setup.
I'm at the point where I have laid out a LT1 intake gasket and need to build up my spare LT1 to check the angles/relationship between heads/intake. Also factor in stock cowl/firewall/hood clearances to be able to package this.
Once a mockup is done one can source the appropriate SC, and start fabricating the lower intake keeping in mind head bolt angles/injector location and angle and all fittings needed for MAP/IAT/all vacuum ports etc.
Like I said, his first version is more "wing it" with some machining and custom fabrication as you go. The second version was A LOT more CAD work and machine work which would be more of a "bolt together" kit version.
I'm at the point where I have laid out a LT1 intake gasket and need to build up my spare LT1 to check the angles/relationship between heads/intake. Also factor in stock cowl/firewall/hood clearances to be able to package this.
Once a mockup is done one can source the appropriate SC, and start fabricating the lower intake keeping in mind head bolt angles/injector location and angle and all fittings needed for MAP/IAT/all vacuum ports etc.
Like I said, his first version is more "wing it" with some machining and custom fabrication as you go. The second version was A LOT more CAD work and machine work which would be more of a "bolt together" kit version.