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 29Likes
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Post By mrmustang
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Post By 1985 CCX
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08-24-2024, 10:43 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: 12,784
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Not Ranked
427 Sideoiler block, keep compression around 9:8:1 so it will run on pump gas
Heads of your choice-me personally, I'm a huge fan of a matching tunnelport heads and 2x4 intake with twin 600cfm Holley DB's installed and chassis (not engine) dyno tuned. Feeding in to either a big spline, wide ratio toploader 4spd, or an equivalent tremec 5spd.
No need for a wild stroker kit in a street driven FE powered Cobra, unless you are doing it for your own ego, keep it simple, makes lots of power, aim for 425-450 at the rear wheels and you'll have a Cobra that will work well under all conditions.........
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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08-24-2024, 11:20 AM
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CC Member
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Join Date: Jun 2002
Location: Omaha,
NE
Cobra Make, Engine: ERA, 496 Tunnel Wedge
Posts: 136
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Not Ranked
Sorry, for some reason the poll keeps crashing
The choices I have at the moment
1 - Fix the 496 Genesis, Tunnel Wedge, Stage 3 Edels - rowdy racer
2 - 427 side oiler, stock stroke, C5 med riser heads, 11/32 undercut stem valves, blueprinted, modern seals and guides, modern 5 angle intake and radius exhaust, hyd roller, pump gas, dual quad medium riser
3 - Same as #2 but 3.98 stroke, 454 inches
4 - Same as #2 but single 4, sidewinder or medium riser single 4, and turkey pan
5 - Same as # 3, 454 inches but single 4 turkey pan
All but number one is planned as pump gas, drive anywhere, happy driver, idle in a parade or spin to 6300-ish max. I'd expect 2-5 to be at the 500 HP mark or higher on the engine dyno, the CJs I do, even mild, run in the 480 HP mark with power brakes and pump gas. Probably run a set of light Crower rods and Racetec pistons.
Number one I don't know what's inside yet, but expecting ricky racer parts
__________________
1994 ERA Cobra, 452 side oiler, C5AE-F, Tunnel Wedge
70 Mustang Fastback, EFI 489 FE TKO-600, too much to list
71 F-100 4x4 EFI 461 FE restomod
Bullock's Power Service, LLC
Concours and performance engines by appointment only
https://www.facebook.com/BullocksPowerService
Last edited by My427stang; 08-24-2024 at 11:25 AM..
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08-24-2024, 11:40 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
Well we all replicate these differently.
Some are hot rods
Some authentic
Some authentic with huge hp.
My prescription would be as close as it came in 60’s.
Either 427SO, 427 Top oiler and/or even a 428SCJ
Stock usually allows pump gas, reliability and plenty of power.
Drivable is key to use and happiness.
Last edited by 1985 CCX; 08-24-2024 at 11:46 AM..
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08-24-2024, 01:27 PM
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CC Member
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Join Date: May 2006
Location: St. Louisville,
Oh
Cobra Make, Engine: A&C 67 427 cobra SB
Posts: 2,445
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Not Ranked
I would go with #2.
#3 would be ok, if you balanced it without using the hatchet.
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