Re: Injector Stack vs. SM Intake
[Re: tubtar]
#847904
11/07/10 01:19 PM
11/07/10 01:19 PM
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Joined: Dec 2005
Posts: 252 St.Louis, Mo.
mokid
OP
enthusiast
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OP
enthusiast
Joined: Dec 2005
Posts: 252
St.Louis, Mo.
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Set up sits on a W7 small block I believe its a 440 cu in car ran inthe low 8's in a 3200 lb conquest, The entire motor is for sale, Very sad story a true mopar racer died of cancer his wife and best friend now are selling everything including Hemi Alum block, a complete 572 hemi block that has 440 heads, several race small blocks, also cars a 67 Barracuda just out of the body shop, a 65 Barracuda full tube chassis running a 440 with a pro charger best of everthing, never got to race car before he died, also a 67 cornet show quality with a Alumn Hemi never run. If any interested parties please let me know.
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Re: Injector Stack vs. SM Intake
[Re: mokid]
#847905
11/07/10 02:15 PM
11/07/10 02:15 PM
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Joined: Jan 2003
Posts: 684 St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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Stack injection on alcohol will make more power than a carb on alcohol, and if you are starting from scratch, the costs is comparable. If the system came of a sprint car motor with W-7 heads, it will not bolt straight on a set of 440 heads.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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Re: Injector Stack vs. SM Intake
[Re: mokid]
#847907
11/07/10 07:55 PM
11/07/10 07:55 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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The IR throttles have to be really huge to beat a carbureted plenum manifold.
Boffin Emeritus
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Re: Injector Stack vs. SM Intake
[Re: polyspheric]
#847908
11/07/10 08:54 PM
11/07/10 08:54 PM
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Joined: Nov 2009
Posts: 3,082 St. Paul , Mn.
tubtar
master
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master
Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
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Quote:
The IR throttles have to be really huge to beat a carbureted plenum manifold.
This kind of formed my opinion........they seem to start at 2 1/8" dia and go up from there on small block set ups I have seen........telling me that they will allow huge amounts of air in. And if you don't have the arrangement that requires this , a carb would be a better choice. Again.....purely guess work from my corner. But it seems to work on paper.
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Re: Injector Stack vs. SM Intake
[Re: tubtar]
#847909
11/08/10 12:08 AM
11/08/10 12:08 AM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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That's not very big. Crower used 2.90" stacks on 427" BBC 40 years ago.
Boffin Emeritus
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Re: Injector Stack vs. SM Intake
[Re: 40ford]
#847912
11/08/10 02:10 PM
11/08/10 02:10 PM
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Joined: Jan 2003
Posts: 684 St. Charles, MO.
Slingshot383
mopar
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mopar
Joined: Jan 2003
Posts: 684
St. Charles, MO.
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The Indy 8-Stack is a 2.90" throttle bore, and Engler Machine and tool can make them much larger than that. A properly set up mechanical fuel injection unit will work at lower rpm's than 4000, and will also have a clean idle.
1994 Undercover Chassis 125" altered
stack injected big block, soon blown and injected
Member of The Torque and Recoil Club
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Re: Injector Stack vs. SM Intake
[Re: Slingshot383]
#847913
11/08/10 06:25 PM
11/08/10 06:25 PM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
The Indy 8-Stack is a 2.90" throttle bore, and Engler Machine and tool can make them much larger than that. A properly set up mechanical fuel injection unit will work at lower rpm's than 4000, and will also have a clean idle.
I agree with the last 2 posters.
I have run 2 different stack injections and have out run all carbs.
I could see driving them on the street, no problem. I even used my N2O system to prime the motor to start,one man job.
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Re: Injector Stack vs. SM Intake
[Re: 40ford]
#847914
11/08/10 08:46 PM
11/08/10 08:46 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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The IRs don't idle well and don't accelerate well off idle----they don't have an acceleration pump as carbs.
Backward.
Boffin Emeritus
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Re: Injector Stack vs. SM Intake
[Re: mokid]
#847921
11/09/10 11:42 AM
11/09/10 11:42 AM
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Joined: Feb 2004
Posts: 1,093 Long Beach, CA
Mike Swann
super stock
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super stock
Joined: Feb 2004
Posts: 1,093
Long Beach, CA
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Ive seen guys do conversions where they have EFI injectors on the underside of the stacks , connect MAP to all of the stacks with small tubes on the outside to a miniature manifold and a TPS on one throttle shaft. Works really nice for the street.
8.30's @3400 lbs
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