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CC Advertisers
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03-03-2005, 06:53 PM
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CC Member
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Join Date: Aug 2001
Cobra Make, Engine: CSX Cars
Posts: 754
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Not Ranked
Ernie,
I thought it was a little slow, you should add a paxton while the motor is out. 
__________________
A happy SAI customer
Cobra Make & Engine: Continuation Series Shelby Cobra, CSX 7034 the most accurately detailed Continuation Cobra to original specification since the demise of CSX 4027.
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03-03-2005, 06:58 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
Hey, a paxton would look cool.
So Mike, what are the specs on that Southern Auto 427 FE you got lined up? Street? Strip? Mild or wild?
Last edited by Excaliber; 03-03-2005 at 08:04 PM..
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03-03-2005, 11:13 PM
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CC Member
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Join Date: Jun 1999
Location: Bay Area,
FL
Cobra Make, Engine: What Cobra?
Posts: 7,193
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Not Ranked
427 Side Oiler makes the car. Real or Replica.
$9000 is not too much to spend on an engine.
__________________
OBAMA IN in 2012
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03-04-2005, 06:38 AM
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CC Member
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Join Date: Aug 2004
Location: East Hampton,
CT
Cobra Make, Engine: Unique 427
Posts: 31
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Not Ranked
If you go on their site I ordered the 427 S.O. w/ the single carb set-up. 490HP and I also went through their extra's and got the turkey pan, stellings air cleaner, aluminum water pump, aluminum pulleys, upgraded electronics ignition MSD w/ spark box, etc....Im projecting to use the cobra for street and every once in the while a few romps here and there....WOW this has been a great response and I appreciate all the opinions......Mike
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03-04-2005, 08:14 AM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
cobra Mike,
Drop the Stellings from your order list or you'll drop 30 or so HP from that 490.
Ask Bill to substitute a K&N for you.
If you keep the Stellings, use it only for "show".
__________________
Chas.
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03-04-2005, 08:26 AM
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CC Member
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Join Date: May 2004
Location: Palm Coast,
FL
Cobra Make, Engine: Shelby American CSX 4241 - authentically built
Posts: 2,573
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Not Ranked
Re: 667 horse with original heads and intake
Quote:
Originally posted by Excaliber
Yup, 667 horse, 1964 high rise heads and 1964 2X4 intake. I'm not sure those new "modern" Edelbrock heads or whatever have a BIG advantage over the stock high riser units. My heads are not "ported" or "polished", just good ol' 64 iron (sodium valves)! The pistons are identical to what they had back then, 12.5 to 1 compression (when you could actually buy 100 octane).
So how in the heck can it produce THAT much horse power? Gotta be the 427's were underated "back in the day" at 425 horse. That had to be for "insurance reasons"!
OR,,, could it be the modern roller lifter camshaft? Maybe thats all it is. Anyway the only part that "broke" on my engine WAS the freakin' modern roller lifter!
Engine's out now, rebuilding with lower compression pistons and a flat tappet cam. Smaller carbs with vacuum secondary. I got to "tame" this beast, at 667 horse I was barely able to drive it on the street!
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Where did 667 hp come from? I have to admit, I find that pretty hard to believe. Even the 1x4 SOHC only made 616. Hell, the SOHC my engine builder did with the race spec SOHC cams and a modern built race carb made 670. I'm sure the 12.5:1 and the high rise heads are the major power players in that combo, but that's still over 200hp more than an OEM spec medium rise setup that original came in the cars.
__________________
Sal Mennella
CSX 4241, KMP 357 - sold and missed, CSX 4819 - cancelled, FFR 5132 - sold
See my car at CSXinfo.net here >> CSX 4241
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03-04-2005, 09:22 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
I've scratched my head over that one myself Sal, and questioned the numbers. George (Gessford) did some calculations with the specs on the motor and figured if it was running at 100% volumetric effiecency that horse power was possible. From the paperwork that came with the car I am inclined to believe the numbers (flywheel horse of course).
Going with 9.8 compression and milder cam George estimates I'll be giving up about 150 horse. I've heard it said the medium riser heads are "almost" as good as the high riser, but I wonder. You could drive a truck through the ports on my high risers.
The intake is a single plane 2X4 with full blown "race only" center squirter 660 Holleys. The engine was built "loose", I found out when I took it down. All clearances were at max. Like .005 on the piston clearance when .003 or so is normal. It also had the typcial oiling modifications done, etc. My feeling was this motor was built to race with a radical cam.
I can say this, it is/was the fastest replica Cobra on Island, 100 mph in 8 seconds!
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03-04-2005, 10:38 AM
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CC Member
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Join Date: Aug 1999
Cobra Make, Engine:
Posts: 2,888
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Not Ranked
I will agree that the 427 SO is the best looking engine you can put in a BB Cobra. But there are other Ford engines that you can put in a Cobra that will outperform the SO for half the cost.
Were talking replicas right? 
__________________
SAAC member and supporter
Club Cranky charter member
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03-04-2005, 11:18 AM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Hey, were talking ACCURATE replicas!
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03-04-2005, 05:47 PM
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CC Member
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Join Date: Jun 2003
Cobra Make, Engine: ERA 427 w/496 Side Oiler, roller, dual quads
Posts: 417
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Not Ranked
Quote:
Originally posted by Excaliber
...The intake is a single plane 2X4 with full blown "race only" center squirter 660 Holleys. The engine was built "loose", I found out when I took it down. All clearances were at max. Like .005 on the piston clearance when .003 or so is normal...
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Excaliber, do the center squirters have power valves? They didn't come with them, but you can put the front plate from a vacuum-secondary 600 Holley in them with it's power valve (used ones work fine...no moving parts). Jet the 660s down 6-8 sizes, and you've got a streetable carb. Without the power valves, they run waaay too rich at idle.
Also, .005 clearance is pretty standard if the pistons are forged. Cast pistons will run tighter clearance, but you don't want them in a performance motor.
Just some food for thought...oh, and I'll bet that baby screamed!
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03-04-2005, 06:16 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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The new pistons, also forged, are spec'd at .0035 clearance. Those 660's had no power valves, they had two speeds.
1. Go like hell.
2. Try to idle, but don't do that very long.
I put some 600 vacuum secondaries on just before I took the motor down. That ALONE was a HUGE improvement in street ability. WITH some noticable loss of power at the high end!
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03-04-2005, 06:59 PM
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Senior Club Cobra Member
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Join Date: Jun 2001
Location: North Metro Atlanta,
GA
Cobra Make, Engine: 2 dr roadster, V-8, 4 spd.
Posts: 2,780
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Not Ranked
Earnie,
Only you would verbally vommit all over someone else's engine build thread.  You couldn't take the moderator HINT before? My apologies to everyone else, but this is ridiculous.
Might I suggest getting a life or starting your own thread? Don't bother with a rebuttal.
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04-15-2007, 01:45 PM
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CC Member
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Join Date: Jun 2006
Location: Calgary,
AB
Cobra Make, Engine: Butler Racing/427 side oiler
Posts: 371
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Not Ranked
what?
Quote:
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Originally Posted by ToyCollector
Earnie,
Only you would verbally vommit all over someone else's engine build thread. You couldn't take the moderator HINT before? My apologies to everyone else, but this is ridiculous.
Might I suggest getting a life or starting your own thread? Don't bother with a rebuttal. |
The guy asked if he could get some info on 427's why are they better ?
Whats with the trashing?
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04-15-2007, 02:49 PM
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Super Moderator
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Join Date: May 2001
Location: Fresno,
CA
Cobra Make, Engine: KMP 184/482ci Shelby
Posts: 14,448
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Not Ranked
Quote:
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Originally Posted by Scufty
The guy asked if he could get some info on 427's why are they better ?
Whats with the trashing?
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WILL YOU PEOPLE LEARN TO READ!!!! YOU'RE TALKING ABOUT A TWO YEAR OLD THREAD AND COMPLAINING ABOUT WHAT SOMEBODY SAID BACK THEN!!!!!
I'm closing this assinine thing down so it will stay buried. 
__________________
Jamo
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03-04-2005, 07:29 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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Not Ranked
A good thread, thanks Mike!
427 FE's is the subject. Got something to add?
Last edited by Excaliber; 03-04-2005 at 09:08 PM..
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03-04-2005, 09:30 PM
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Club Cobra Member
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Join Date: Mar 2001
Location: Southern,
NJ
Cobra Make, Engine: CSX4300, C5AE-H, Toploader
Posts: 695
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Not Ranked
Mike I ran a 390 GT engine in my fat 67 convertable and it ran like a scalded dog! I have just got my 427 s/o back from Southern and I can only imagine how much fun that it's going to be in a little Cobra and 50 o/o more power. Congrats and enjoy your new engine!Southern is a good choice!
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03-09-2005, 07:05 PM
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CC Member
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Join Date: Dec 2004
Location: Prince Frederick,
MD
Cobra Make, Engine: Unique 427 S/C 427 FE S.O. 484 cu in
Posts: 952
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Not Ranked
Mike, congrats ! I to have ordered my 427s/o And top loader from SA. I'm going with the 2x4v And I ordered my Unique Cobra. Going to visit them both on the 21 March. Want me to say hello to your engine?
Tony
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03-09-2005, 07:44 PM
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Senior Club Cobra Member
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Join Date: Jul 2002
Cobra Make, Engine:
Posts: 15,712
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You guys, Mike/Tony going with the close ratio or wide ratio top loader? I'm running the close ratio but with the higher rear gear of 3:31 (which I have) I think I would prefer the lower 1st gear ratio of the wide ratio trans.
I understand the original Comp Cars ran a close ratio, but I've also heard they ran a pretty low rear gear for road racing. Something like a 3.75 or so. No doubt a higher rear ratio for the longer straight a way courses.
Last edited by Excaliber; 03-09-2005 at 07:46 PM..
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03-09-2005, 08:34 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Not Ranked
I think you did it exactly right. Rollers are a dime a dozen. Give David Kirkham a call next year and he'll find a home for your side oiler.
__________________
michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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03-10-2005, 03:26 AM
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CC Member
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Join Date: Dec 2004
Location: Prince Frederick,
MD
Cobra Make, Engine: Unique 427 S/C 427 FE S.O. 484 cu in
Posts: 952
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Not Ranked
Wide Ratio. Did research on CC about gear ratios and trannys. Seems to be a better street combo for the majority.
Tony
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