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5Likes
05-15-2014, 11:34 AM
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CC Member
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Join Date: Apr 2014
Cobra Make, Engine:
Posts: 13
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Not Ranked
Eight stack
Is a eight stack really worth $8000 - $10,000 because those are the numbers I'm being quoted to install on my car? Backdraft 351 stroked to 392 Holley 750.
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05-15-2014, 11:59 AM
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Backdraft Racing Dealer
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Join Date: Dec 2004
Location: North Haven,
CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,121
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Not Ranked
To do it correctly at my shop that's what it would take, with dyno tuning etc.
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05-15-2014, 12:56 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
To answer your question, no, it's not worth it.
That's probably a reasonable price, considering the system will approach $5-6k just by itself, not including the labor to install and tune.
If you're looking for horsepower, you won't find it here unless your carb is undersized. If you're looking for gas mileage, the ROI just won't be there.
If you're looking for a more modern induction system that would allow the engine to function more efficiently and would give you more modern OEM "perks", then you would have to weigh how much that means to you against the price.
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05-15-2014, 12:57 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,445
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Not Ranked
Depends on what your goal is, and what your budget is. The 8 stacks look great, and performs really well if you set them up right. You can get a central TB system to perform a little better, for a lot less money. But, IMO, nothing looks as good as an 8 stack.
Would I pay $10K? No. Way out of my budget.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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05-15-2014, 01:21 PM
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CC Member
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Join Date: Oct 2008
Location: Lions Bay,
BC
Cobra Make, Engine: CAN-AM cobra, 460 SVO
Posts: 326
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Not Ranked
classic want vs. need. There might be a bunch of nice features/benefits about a stack system, but none of them or all of them put together could justify that price in a practical world. I still really want one though
__________________
Mark
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05-15-2014, 05:45 PM
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Senior ClubCobra Member
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Join Date: Feb 2006
Location: Northern,
Ca
Cobra Make, Engine: LA Exotics
Posts: 1,037
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Not Ranked
Is it worth it? Of course it is. The question is, can you afford it.
Now if you want to do it right, put a cammer in your car with that 8 stack.
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05-15-2014, 07:39 PM
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CC Member
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Join Date: Aug 2010
Cobra Make, Engine: Lone Star with IRS, 427W with megasquirt, T56 magnum
Posts: 309
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Not Ranked
I recently picked up a chinese knock off 8 stack for under $1000 on Ebay. It included linkage, trumpets, fuel rails, manifold and throttle bodies. Add $1000 or so for a pump, tubing, fittings, filter and regulator, then another $500 or so for a megasquirt and wide band O2, and I'll be in business. My I've done a couple now and can do it myself.
All the chinese stuff is responsible for is regulating the air into the engine. As long as it doesn't dump the water into the crankcase, it'll do fine.
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05-15-2014, 10:56 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,445
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Neutral
You get what you pay for - if you're lucky.
"All it does is regulate the air". I'v got to tell you, this is the MOST important part! If the throttle bodies are not balanced correctly, it will never run right. Never. The balance has to be near perfect. And there's no amount of tuning that will compensate for that.
Good luck.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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05-15-2014, 11:35 PM
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Backdraft Racing Dealer
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Join Date: Dec 2004
Location: North Haven,
CT
Cobra Make, Engine: Backdraft Racing
Posts: 5,121
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Not Ranked
Quote:
Originally Posted by Luce
I recently picked up a chinese knock off 8 stack for under $1000 on Ebay. It included linkage, trumpets, fuel rails, manifold and throttle bodies. Add $1000 or so for a pump, tubing, fittings, filter and regulator, then another $500 or so for a megasquirt and wide band O2, and I'll be in business. My I've done a couple now and can do it myself.
All the chinese stuff is responsible for is regulating the air into the engine. As long as it doesn't dump the water into the crankcase, it'll do fine.
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I bought one of those in eBay for $400, it's on my coffee table.
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05-16-2014, 02:43 PM
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CC Member
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Join Date: Apr 2014
Cobra Make, Engine:
Posts: 13
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Not Ranked
It's just that my whole engine new was only $8000!!!
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05-16-2014, 03:07 PM
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CC Member
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Join Date: Aug 2013
Location: Haslet,
TX
Cobra Make, Engine: BDR #888, Keith Craft 408
Posts: 344
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Not Ranked
Quote:
Originally Posted by Rbmack5
It's just that my whole engine new was only $8000!!!
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You just answered your own question....
Kevin.....
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05-16-2014, 04:13 PM
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Senior Club Cobra Member
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Join Date: Oct 2004
Location: Granite Bay,
Ca
Cobra Make, Engine: SPF GT40P-2265/393W, KMP318 (PROJECT!!!!!)/CSX478
Posts: 1,158
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Not Ranked
Get some webers...look just as cool, period correct, and 1/3 the cost.
Just sayin'.
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Ron R
"Dishwasher? I thought that was for cleaning parts!?"
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05-16-2014, 04:31 PM
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CC Member
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Join Date: Sep 2009
Location: Dallas,
tx
Cobra Make, Engine: FFR track car, SL-C track car
Posts: 1,262
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Not Ranked
Quote:
Originally Posted by Igofastr
Get some webers...look just as cool, period correct, and 1/3 the cost.
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Just as cool? I though all the other induction systems were trying to look like Webers.
So aren't they all just some form of replica Webers.
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05-16-2014, 05:17 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,584
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Not Ranked
I had the roush setup. Also remember the post installation care and feeding is non trivial. The linkages are nasty
__________________
Cheers,
Tony
CSX4005LA
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05-16-2014, 07:11 PM
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CC Member
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Join Date: Mar 2012
Location: Heath,
TX
Cobra Make, Engine: Shelby American CSX 8000 Slab Side series, 289 High Pro , Eight Stack EFI system ,TKO500
Posts: 275
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Not Ranked
I have the eight stack, eztune installed, expenses yep, worth it to me, you bet. Starts right up, shuts right down, no gas smell, wife loves that. Runs like a scalded jack rabbit out of West, Texas.
__________________
Participating in a gun buy back program because
you think that criminals have too many guns
is like having yourself castrated because you
think your neighbors have too many kids.
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05-16-2014, 08:13 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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05-22-2014, 08:01 AM
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CC Member
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Join Date: Aug 2010
Cobra Make, Engine: Lone Star with IRS, 427W with megasquirt, T56 magnum
Posts: 309
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Not Ranked
Well, when I bought it, I knew there was a reasonable risk I was paying almost $1000 for a piece of wall art for the garage, but no. It looks good. I completely expect to need to sync the throttles and double check that the butterflys are properly staked, but they are all adjustable. I may wish to remake the center bellcrank and linkage out of aluminum when I finish my CNC router/mill, but that's more for appearance. The supplied steel one is tight, ridgid and symmetric so it will reliably open both banks in unison.
And no. All that this hardware does is restrict the air going into the engine. All that's critical is that all of the cylinders get the same air flow through their throttle bore and the manifold seals to the heads and block. The injectors and ECU handle the rest.
Too bad it'll be a few years before it's on a running engine.
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05-22-2014, 08:39 AM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Midstates/Shell Valley Street Cobra
Posts: 892
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Not Ranked
No.... no significant performance improvement...you are just paying big bucks for a look...if I had a GT 40 I might consider it because the engine is always in sight....just my two cents..
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06-01-2014, 08:24 AM
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CC Member
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Join Date: Mar 2005
Location: Perth,
wa
Cobra Make, Engine: Pace Alumina 427 #69
Posts: 1,615
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Not Ranked
I have an 8 stack on my 40 and i have to say there are few differences from a 4 barrel set up. Mostly is the noise, induction noise from an 8 stack is awesome. Also the motor feels far more responsive with the 8 stack.
I couldn't have a Ford V8 without either a EFI 8 Stack or Webers.
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RF12 414 Windsor 8 stack ,6spd, Avons
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06-02-2014, 10:48 AM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,616
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Not Ranked
Quote:
Originally Posted by dallas_
Just as cool? I though all the other induction systems were trying to look like Webers.
So aren't they all just some form of replica Webers.
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So would that make the various stack induction systems "Weber replicas" or "Weber continuation" induction systems?
What does SACK say? Or is that SAAK?
__________________
Jim
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