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 5Likes
03-22-2015, 07:28 AM
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CC Member
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Join Date: Dec 2004
Location: Kansas City,
KS
Cobra Make, Engine: jbl
Posts: 2,291
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Not Ranked
Quote:
Originally Posted by 750hp
Why couldn't this engine run on 93? Only 11.5:1 and enough camshaft to bleed off some cylinder pressure and it shouldn't be a big deal.
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You could be right. |
03-22-2015, 02:07 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
For the torque to be 1.5 x the displacement, you have to be near 100% VE. To get near 100% VE north of 5K RPM, you have to be doing a lot of things right. This is not your every day run of the mil engine!
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03-22-2015, 08:02 PM
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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
Wow
thanks for sharing the build - I'm sure you're delighted with the result.
LoBelly
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03-24-2015, 06:34 AM
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CC Member
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Join Date: Jul 2003
Location: West Bloomfield,
MI
Cobra Make, Engine:
Posts: 717
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Not Ranked
Potent package there.
You have better "shelves" than I do.
At 1.52 TQ per cid on 11.5:1 compression that package is far from the normal expected range of "off the shelf" components. Although the RPM band on this build is considerably higher, the overall numbers would have been very, very competitive in any of the Engine Masters competitions - and I suspect that none of those would have been considered "off the shelf".
__________________
Survival Motorsports
"I can do that....."
Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP
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03-31-2015, 09:18 PM
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CC Member
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Join Date: Jan 2008
Location: Nashville,
TN
Cobra Make, Engine: Backdraft, SBF 351w (463 CI)
Posts: 272
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Not Ranked
Here another engine Kuntz built recently. This 376 SBF engine was built for a weeks worth of abuse (drag week)  Nothing exotic , 11.1 compression, pump gas, Jims 15 degree heads. It will run sealed all week (no vacuum Pump).
Mark
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04-01-2015, 04:17 AM
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CC Member
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
Posts: 2,797
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Not Ranked
Impressive. Both engines have exceptional BSFC figures.
Can I ask what carburettors?
__________________
Gary
Gold Certified Holden Technician
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04-01-2015, 02:44 PM
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CC Member
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Join Date: Jan 2008
Location: Nashville,
TN
Cobra Make, Engine: Backdraft, SBF 351w (463 CI)
Posts: 272
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Not Ranked
850 QF on the 438. not sure on the 376
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06-16-2016, 08:28 PM
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Registered User
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Join Date: Jun 2016
Cobra Make, Engine:
Posts: 1
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Not Ranked
During an internet search I found my engine in this forum. And no, it won't fit under the hood of my Pike's Peak car as well. Working through issues with car, currently. Will give more updates in the future.
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06-26-2016, 02:28 PM
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CC Member
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Join Date: Sep 2013
Location: Memphis,
TN
Cobra Make, Engine: SPF#1867 , KC427
Posts: 431
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Not Ranked
That is some insane power from a 438. I wonder what it would make if you bumped the compression down half a point and used a hydraulic roller with some modified lifters to let it pull to 7000. Threads like this keep my hopes alive for my small block
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06-27-2016, 07:58 AM
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CC Member
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Join Date: Feb 2003
Location: Jonesboro GA,
Posts: 382
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Not Ranked
Am I reading that correctly, the cam has gross lift of .750? Would love to see more on that.
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06-28-2017, 04:12 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,307
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Not Ranked
Any updates ?
Would love to here them running, any vids ?
__________________
Regards,
Kevin
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