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23Likes
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Post By twobjshelbys
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Post By 767Jockey
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Post By CompFi
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Post By patrickt
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Post By PDUB
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Post By Mark IV
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Post By mrmustang
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Post By 1985 CCX
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Post By mrmustang
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Post By eschaider
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Post By patrickt

01-30-2025, 02:30 PM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
Engine choices FE or 427 Windsor
I have a friend looking to install a motor in a SPF.
The choices range from Shelby FE with injection to a Roush 427 SB.
He feels injection is a keeper. He is thinking Weber stack type injection.
Choices……..
…………….Shelby FE
or
…………….…..Roush 427 stroker
or
Recommendations………
What do you think as I only know 60’s iron. He wants new not old….
He is after light weight reliability with power of old.
Thoughts and why appreciated.
Also, transmission of choice.
Last edited by 1985 CCX; 01-30-2025 at 02:32 PM..
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01-30-2025, 04:10 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: 5,632
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Not Ranked
I had roush fuel injected lots of probs with it as described here. Engine was great itself only the efi system. They switched systems and seem to be better. Another local cobra owner had the carb version and tuned to the denver altitude loved it.
Does shelby sell complete engines or just blocks
__________________
Cheers,
Tony
CSX4005LA
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01-30-2025, 04:42 PM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
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01-30-2025, 05:26 PM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,741
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Not Ranked
We used to have an Advanced Engine Decision Tree Logic Diagram that took the decision process right down to the basics. I think I still have it somewhere. Lets see ...
Oh yes! Here it is;

__________________
Help them do what they would have done if they had known what they could do.
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01-30-2025, 09:43 PM
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CC Member
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Join Date: May 2021
Cobra Make, Engine:
Posts: 528
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Not Ranked
Quote:
Originally Posted by 1985 CCX
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A quick look at the Windsor 427s, and they are going to be putting down more horse power at the rear wheel then the 60s 427s were putting out at the crank! Combine that with a much better chassis then either the 427 or AC289, he will have a winning combination! Cheers, Dennis
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01-30-2025, 11:04 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: 5,632
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Not Ranked
Fir tranmission go tremec
__________________
Cheers,
Tony
CSX4005LA
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02-02-2025, 09:54 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
Let’s add in Blare Patrick or Cozzy.
Both I understand are top notch.
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02-02-2025, 10:42 AM
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Senior Club Cobra Member
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Join Date: Feb 2005
Cobra Make, Engine: Contemporary, FE, Tremec TKO 600
Posts: 1,987
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Not Ranked
Quote:
Originally Posted by 1985 CCX
Let’s add in Blare Patrick or Cozzy.
Both I understand are top notch.
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I have a Blair Patrick built 520" BBM based FE in my car. 744HP, reliable, and Blair is a pleasure to deal with.
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02-02-2025, 04:51 PM
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CC Member
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Join Date: Jan 2022
Cobra Make, Engine:
Posts: 161
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Not Ranked
I have been following this thread with keen interest. But hesitant to offer my opinion, given that so many others here know these engines far better than me.
But one thing for consideration here. Resale value. The market typically favors the FE. Markets fluctuate of course but that trend seems rather consistent.
Not that I would encourage your buddy to build his car for the next owner. But if he remains undecided, then the FE might be the way to go for its resale value down the road.
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02-02-2025, 05:28 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Neutral
<sigh>... if you stuff a SBF in a 427 style car everyone on the planet will be disappointed when they look in the engine compartment, including you. The nice thing about FEs is that they all look alike in a Cobra, including side oilers. Put a stroked and bored iron block 390 in there and you will be much happier. And any experienced FE builder can get you more horsepower out of that mill than you will ever need or use. 
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02-03-2025, 01:11 AM
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CC Member
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Join Date: Jul 2003
Cobra Make, Engine: Unique Motorcars 289 USRRC, 1964 289 stroked to 331, toploader
Posts: 1,127
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Not Ranked
Quote:
Originally Posted by patrickt
<sigh>... if you stuff a SBF in a 427 style car everyone on the planet will be disappointed when they look in the engine compartment, including you. The nice thing about FEs is that they all look alike in a Cobra, including side oilers. Put a stroked and bored iron block 390 in there and you will be much happier. And any experienced FE builder can get you more horsepower out of that mill than you will ever need or use. 
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For a budget 427, Patrick is spot-on! On top of that, Blair won the 2019 Engine Masters Challenge with a 390FE!! You can find out the info on the interweb...
__________________
Paul
Unique Motorcars 289 USRRC
1964 289 5-bolt block
Toploader and 3.31 rear
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02-03-2025, 04:08 AM
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Senile Club Cobra Member
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Join Date: Feb 2001
Location: Buffalo, NY USA,
NY
Cobra Make, Engine: Superformance
Posts: 4,566
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Not Ranked
Quote:
Originally Posted by CompFi
I have been following this thread with keen interest. But hesitant to offer my opinion, given that so many others here know these engines far better than me.
But one thing for consideration here. Resale value. The market typically favors the FE. Markets fluctuate of course but that trend seems rather consistent.
Not that I would encourage your buddy to build his car for the next owner. But if he remains undecided, then the FE might be the way to go for its resale value down the road.
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Yes, an FE will sell for more, but it originally cost more. Many see to ignore that point. There are some bragging rights with an FE, but as none of these cars are 1960's AC Thames Ditton built cars that is a warm fuzzy for the owner and a negotiating point for a potential purchaser.
__________________
"I'm high all right, but on the real thing....powerful gasoline and a clean windshield..."
rick@autoventureusa.net
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02-03-2025, 06:53 AM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,765
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Not Ranked
Quote:
Originally Posted by CompFi
Not that I would encourage your buddy to build his car for the next owner. But if he remains undecided, then the FE might be the way to go for its resale value down the road.
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If you are buying a new Cobra replica for it's resale value down the road, you shouldn't buy it at all.
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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02-03-2025, 07:54 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
Quote:
Originally Posted by mrmustang
If you are buying a new Cobra replica for it's resale value down the road, you shouldn't buy it at all.
Bill S.
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Bill and all,
Its a point to try and protect the cash outlay and another NOT to look to gain.
No gain in this operation, just clean power and reliability. With EFI the originality is moot, its smiles looked for but he is not looking to LS1 or Hemi the car as that rolls back to "Yuck"....
Looking for clean, reliable, support and smiles at this juncture. My friend looking to drive vs tinker and drive.
Last edited by 1985 CCX; 02-03-2025 at 08:11 AM..
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02-03-2025, 09:57 AM
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CC Member/Contributor
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Join Date: Feb 2000
Location: Greenville,
SC
Cobra Make, Engine: 70 Shelby convertible, ERA-289 FIA, ERA 289 roadster hybrid, mystery Ford powered 2dr convertible
Posts: 12,765
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Not Ranked
Quote:
Originally Posted by 1985 CCX
Bill and all,
Its a point to try and protect the cash outlay and another NOT to look to gain.
No gain in this operation, just clean power and reliability. With EFI the originality is moot, its smiles looked for but he is not looking to LS1 or Hemi the car as that rolls back to "Yuck"....
Looking for clean, reliable, support and smiles at this juncture. My friend looking to drive vs tinker and drive.
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In that case I highly recommend a Ford crate engine, specifically M-6007-X2347DR
Plenty of HP and Torque, plus it will run on whatever pump fuel is available over the road.
Bill S.
__________________
Instead of being part of the problem, be part of a successful solution.
First time Cobra buyers-READ THIS
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02-03-2025, 10:35 AM
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CC Member
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Join Date: Oct 2006
Cobra Make, Engine: Former owner of Long Live the Bow tie Contemporary #102 427 Chevy .30 over Merlin heads 11to1, TBI injection
Posts: 754
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Not Ranked
Just go with a GM LS and forget all this playing around !
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02-03-2025, 11:46 AM
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CC Member
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Join Date: Feb 2006
Location: Gilroy,
CA
Cobra Make, Engine: SPF 2291, Whipple Blown & Injected 4V ModMotor
Posts: 2,741
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Not Ranked
Quote:
Originally Posted by mrmustang
In that case I highly recommend a Ford crate engine, specifically M-6007-X2347DR
Plenty of HP and Torque, plus it will run on whatever pump fuel is available over the road.
Bill S.
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OP,
Bill's recommendation is not only a real smart way to go, it is spot on!
As others have already commented, these cars are reproductions, replicas, not even clones, unless you buy a Kirkham and even those still have differences. A good replica will, for the most part, be; - Visually indistinguishable from an original, to a casual observer,
- Very likely to outperform the original because of technological improvements in the last half-century,
- A better driving experience than a brand new Cobra 60 years ago, for the same reason.
Don't piss away hard-earned money on meaningless attributes that only a dilettante would pay attention to. In the end he will not buy your car when you sell it! Period correct madness only pisses away bushel baskets of money on $hit that doesn’t matter to anyone who has the money to buy the car. Most importantly, it doesn’t make the car any better to drive — which is what should be important to you as the buyer, owner, and builder!
BTW, as a closing thought, these cars are not investments! Don’t get sucked down that rabbit hole. They are play toys that you have enough money to buy, build, and enjoy.
__________________
Help them do what they would have done if they had known what they could do.
Last edited by eschaider; 02-03-2025 at 12:03 PM..
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02-03-2025, 02:10 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
... and we all joke from time to time about FEs marking their territory, requiring constant attention, etc. but the truth is that FEs are incredibly durable and hard to break. If you ask blykins "can you build me a stroked and bored FE that will go 100,000 miles and make over 400HP every step of the way?" he's likely to say "I could build that in my sleep."
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02-06-2025, 08:34 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
Tom,
Dont be silly
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