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11-21-2010, 08:10 AM
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CC Member
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Join Date: Oct 1999
Location: Prosper,
TX
Cobra Make, Engine: CAV GT40 #169, Ford 408 Stroker & ZF Transaxle
Posts: 2,408
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Not Ranked
Cobra Build Update-Dyno Run
__________________
Gary
CAV GT40
Last edited by gsharapa; 11-21-2010 at 07:47 PM..
Reason: More Pics
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11-21-2010, 08:24 AM
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CC Member
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Join Date: May 2009
Location: American Fork,
Ut
Cobra Make, Engine: 66 Cobra
Posts: 930
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Not Ranked
That is a nice looking car Gary.
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11-21-2010, 08:29 AM
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CC Member
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Join Date: Jun 2006
Location: Pattaya,
Posts: 479
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Not Ranked
Thank you. Just listening to that on a Sunday gets you going. Must play it again.
Bewtiful
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11-21-2010, 10:53 AM
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CC Member
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Join Date: Oct 2003
Location: Bainbridge Island,
WA
Cobra Make, Engine:
Posts: 709
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Not Ranked
That's a sweet ride you have there Gary. 523 at the wheels....cool. Humidity sounds good at 35% for a good pull.
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11-21-2010, 02:17 PM
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CC Member
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Join Date: May 2010
Location: Birmingham,
AL
Cobra Make, Engine: Kirkham 289 FIA, 363 Stroker
Posts: 751
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Not Ranked
I love this car! The body looks great and the paint is the perfect color!
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11-21-2010, 06:13 PM
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CC Member
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Join Date: Jun 2005
Cobra Make, Engine:
Posts: 3,077
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Not Ranked
That is georgeous!!!!! Keep it between the ditches!!!
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11-21-2010, 06:37 PM
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Senior Club Cobra Member
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Join Date: May 2007
Location: The Colony,
TX
Cobra Make, Engine: CSX 4973
Posts: 334
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Not Ranked
I was there for the first pull and all I can say is AWESOME. The car is absolutely one of the nicest cobras I have ever seen. The sound of that big block is just incredible.
__________________
David
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11-21-2010, 08:09 PM
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CC Member
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Join Date: Oct 1999
Location: Prosper,
TX
Cobra Make, Engine: CAV GT40 #169, Ford 408 Stroker & ZF Transaxle
Posts: 2,408
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Not Ranked
Thanks Dave...the next run was even better when we got the carb to open up all the way........By the way your CSX is pretty nice also as you know I love black....
__________________
Gary
CAV GT40
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11-22-2010, 11:11 AM
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CC Member
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Join Date: Oct 2006
Location: Virginia Beach,
va
Cobra Make, Engine: BDR #250
Posts: 234
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Not Ranked
What A/F are you shooting for? 12.4 is pretty good for a NA motor and so are
the rwhp numbers! Looks great as well!
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11-22-2010, 11:14 AM
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CC Member
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Join Date: Dec 2000
Location: Broken Arrow. OK ( South Tulsa), USA,
OK
Cobra Make, Engine: 66 COBRA FE 427 /4SP. (HCS Coupe w/ 408 Stroker and TKO 600 -sold)
Posts: 5,595
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Not Ranked
Great looking car Gary! I wouldn't have expected anything less from you. Are you bringing it to Tulsa next June for the Shelby meet?
__________________
Sunshine, Asphalt and no stop signs...Perfect
"Let's roll"
"Be part of Something Good
......Leave Something Good Behind!"
from CD "Long Road Out of Eden"
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11-22-2010, 05:58 PM
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CC Member
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Join Date: Oct 1999
Location: Prosper,
TX
Cobra Make, Engine: CAV GT40 #169, Ford 408 Stroker & ZF Transaxle
Posts: 2,408
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Not Ranked
Actually wanted Air/Fuel to be a notch higher as when it went over 6,000 it went pretty rich falling to 12 and a bit below...Rob leaned it out a bit this am and ran it again and pretty consisent 13 across the band and it made 530 HP. Very warm and high humidity today but when we brought it home it sounded pretty good. Probably go back have way.
Plan to be Tulsa in 2011...
__________________
Gary
CAV GT40
Last edited by gsharapa; 11-22-2010 at 07:21 PM..
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11-22-2010, 09:29 PM
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CC Member
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Join Date: Mar 2007
Location: Creedmoor,
TX
Cobra Make, Engine: FFR3542K, 347 C. I., EFI, T-5, Miata Front Sway Bar, 3 Link, Red with White Stripes
Posts: 1,161
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Not Ranked
The car looks great Gary. I can't wait to see it in March at the Meet.
__________________
Steve
Texas Cobra Club-Austin
July 2009 FFCars Picture of the Month
FFR3542K, 347, Holley Sniper EFI, T-5, 4 Wheel Discs, 3-Link, Miata Front Sway Bar, Red with White Stripes
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11-23-2010, 05:41 AM
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Senior Club Cobra Member
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Join Date: Feb 2006
Location: Melbourne,
VIC
Cobra Make, Engine: RMC, carb 347 TopLoader and Jag running gear ~ so old school I time it with an hour-glass :D
Posts: 1,293
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Not Ranked
That is a fantastic build
Congratulations
LoBelly
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11-23-2010, 06:26 AM
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CC Member
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Join Date: May 2003
Location: Carencro, La,
USA
Cobra Make, Engine: Midstates 427 / ERA 289 USRRC
Posts: 214
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Not Ranked
Nice Car!!!
WOW! What a great looking car. Just out of curiosity, where would one buy an Exact Cobra?
Thanks
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11-23-2010, 09:08 AM
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CC Member
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Join Date: Apr 2007
Location: Austin TX,
tx
Cobra Make, Engine: Exact 427 Carbon Car
Posts: 166
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Not Ranked
Congratulations Gary on finishing the car. It looks great!
Have fun,
Richard
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11-23-2010, 02:40 PM
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CC Member
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Join Date: May 2002
Location: Ashburton, New Zealand,
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Cobra Make, Engine: UK Ram SC. KC-Yates 373, Jerico 5 speed.
Posts: 1,240
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Not Ranked
Cobra Build Update-Dyno Run Reply to Thread
Gary,
That is a very nice example of what a Cobra 427SC should be!
__________________
A J. Newton
The 1960's rocked!
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11-23-2010, 03:37 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by gsharapa
Actually wanted Air/Fuel to be a notch higher as when it went over 6,000 it went pretty rich falling to 12 and a bit below...Rob leaned it out a bit this am and ran it again and pretty consisent 13 across the band and it made 530 HP.
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Gary, your car is really done right, congratulations.
However, I have a question about the power figures. Your description says the motor made 681HP which at 1.38 HP/CI is very do-able.
I understand that the chassis dyno figures were compromised by the A/F ratio and the weather conditions. Assuming the car might make an additional 30 WHP (not sure about doing that) and assuming the 681 figure is accurate-that would mean you currently have a 22% drive train loss OR the motor is down 61HP in these conditions from it's dyno rating.
I have not seen such a loss ratio on a Cobra with IRS-my own is close to 17%. It follows that if 17% is accurate for you, your car will make 565WHP with the correct tune and decent weather. I'm uncertain if the weather and jetting will account for a 61 HP improvement.
Any thoughts?
__________________
Chas.
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11-25-2010, 01:48 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Gary, would still like some discussion on my question above.
__________________
Chas.
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11-25-2010, 09:38 PM
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Senior Club Cobra Member
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Join Date: Nov 2003
Location: Parker County,
Tx
Cobra Make, Engine: LoneStar LS427 , 427 Windsor
Posts: 381
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Not Ranked
Don't forget sidepipes, accessory drives, etc. as variants from the engine dyno numbers.
__________________
Jim
------------
A Gnat! Quick, get a sledgehammer!
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11-26-2010, 07:14 AM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by Barnsnake
Don't forget sidepipes, accessory drives, etc. as variants from the engine dyno numbers.
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My 17% figure included all that-I drove in and put it on the rollers.
__________________
Chas.
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