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06-25-2011, 05:24 AM
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CC Member
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Join Date: Mar 2006
Cobra Make, Engine:
Posts: 72
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Not Ranked
402w dyno results
almost 565 hp with 530 ft lbs of torque.. under 6000 rpms.
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06-25-2011, 07:32 AM
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CC Member
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Join Date: Oct 2010
Cobra Make, Engine: Superformance
Posts: 663
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Those are stout numbers. Can you share your cam type/specs and what cylinder heads you are using (with or without mods)? Compression ratio?
-Steve
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06-25-2011, 07:34 AM
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CC Member
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Join Date: Mar 2006
Location: El Paso,
tx
Cobra Make, Engine: FRR MKIII 408w
Posts: 340
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Not Ranked
Quote:
Originally Posted by stroked windsor
almost 565 hp with 530 ft lbs of torque.. under 6000 rpms.
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AWESOME!! Fly wheel or RWHP? |
06-25-2011, 12:36 PM
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CC Member
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Join Date: Mar 2006
Cobra Make, Engine:
Posts: 72
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flywheel. 9 pulls. last pull was with a 1'' spacer and a 950 AED HP carb. HR cam 240-248-624-600-110. vic jr. AFR 205 heads. very pleased. should be a neat street car...
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06-25-2011, 01:28 PM
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Join Date: Apr 2011
Posts: 1,092
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Very good numbers for a 402w, you should be a happy camper!
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06-25-2011, 03:11 PM
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Join Date: Oct 2003
Posts: 4,078
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If it goes into a Cobra the spacer will have to go.
__________________
Chas.
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06-25-2011, 03:46 PM
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Join Date: Mar 2006
Cobra Make, Engine:
Posts: 72
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its going in a 69mach1.
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06-25-2011, 03:57 PM
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10.5 on the comp!!
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05-12-2012, 04:48 AM
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Join Date: Mar 2006
Cobra Make, Engine:
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thinking of getting it up to 600 hp while the motor is still out... am i crazy to do this? im so close. what will it take? street car.. cam?, heads?.. thanks. 402w. AFR205s, HR cam.
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05-12-2012, 07:10 AM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Head work, intake work, and a bigger cam....most likely a change to a solid roller, which would necessitate a lifter and valve spring change. You'll have to spin it up quite a bit higher than 6000 now.
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05-12-2012, 09:01 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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Quote:
Originally Posted by stroked windsor
thinking of getting it up to 600 hp while the motor is still out... am i crazy to do this? im so close. what will it take? street car.. cam?, heads?.. thanks. 402w. AFR205s, HR cam.
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how many times, or what kind of block you using. |
05-12-2012, 03:22 PM
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Join Date: Mar 2006
Cobra Make, Engine:
Posts: 72
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bought a sportsman block back in the late 90s. A351. ill never see the high side of 3500 rpms around where i live. ill just builkd it to be fast from idle to the next stop light. gears. converter, drag radials, etc... 600 does sounds better! 565 isnt to bad.. torque is what i want. 530 ft lbs...
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05-12-2012, 04:12 PM
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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If torque is what you want, then you need to go the opposite direction with the horsepower.
They're almost inversely related....if you go wild on horsepower, torque goes down and peak torque rpm goes up. If you go conservative on the horsepower, more than likely (depending on the cam), you'll end up with more torque and a flatter curve.
Build the engine for what its purpose is...if you spend the majority of the time cruising at low rpms, then build the engine for that purpose.
Last edited by blykins; 05-12-2012 at 04:24 PM..
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05-12-2012, 06:07 PM
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CC Member
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Join Date: May 2012
Location: Canada,
lav
Cobra Make, Engine: Canada
Posts: 1
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thanks, very good =)
thanks, very good =)
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05-12-2012, 07:41 PM
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yes thanks. i think my combo does that....
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05-19-2012, 02:40 PM
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Join Date: May 2008
Location: Brisbane,
QLD
Cobra Make, Engine:
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Stout numbers you have there.
To get another 35+ hp, the compression could be upped a little to say 10.8:1 and possibly a larger cam.
I'd try a head skim to up the compression, match port the intakes after the intake gets skimmed, advance curve, and carb jetting.
__________________
Gary
Gold Certified Holden Technician
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05-28-2012, 01:00 PM
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Cobra Make, Engine:
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thanks.
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