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CC Advertisers
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 59Likes
11-18-2016, 12:25 PM
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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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Not Ranked
Power to weight ratio....
2400 lbs vs 600 hp - 4 lbs / hp
2300 lbs vs 600 hp - 3.83 lbs / hp.
You'd never know the difference.
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11-18-2016, 12:41 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
He'll notice. Remember, he's discriminating.... |
11-18-2016, 12:44 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Quote:
Originally Posted by blykins
Power to weight ratio....
2400 lbs vs 600 hp - 4 lbs / hp
2300 lbs vs 600 hp - 3.83 lbs / hp.
You'd never know the difference.
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A 4% improvement isn't nothing. |
11-18-2016, 12:49 PM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
Quote:
Originally Posted by lippy
A 4% improvement isn't nothing.
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I agree with lippy.
There's all types of folk (from serious to hobbyists) who would kill for that weight savings.
__________________
rodneym
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11-18-2016, 01:06 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Quote:
Originally Posted by rodneym
There's all types of folk (from serious to hobbyists) who would kill for that weight savings.
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And if weight were truly unimportant, then we would all be building ERA's at 2,500-2,600 lbs.   |
11-18-2016, 12:53 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Quote:
Originally Posted by lippy
A 4% improvement isn't nothing.
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And if you use 125 lbs, it's over a 5% difference.
I know I could feel a 5% power difference, maybe not as much with 4%. I am discriminating.
And think about the increase gas mileage with a lighter car. More nimble in those freeway off and on ramps too! |
11-18-2016, 01:05 PM
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Senile Club Cobra Member
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Join Date: Feb 2001
Location: Buffalo, NY USA,
NY
Cobra Make, Engine: Superformance
Posts: 4,575
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Not Ranked
And then they try to put the power down on some BFG TAs.................... 
__________________
"I'm high all right, but on the real thing....powerful gasoline and a clean windshield..."
rick@autoventureusa.net
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11-18-2016, 01:39 PM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
Vic
Cobra Make, Engine: Some polish thing... With some old engine
Posts: 2,286
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Not Ranked
Quote:
Originally Posted by blykins
Power to weight ratio....
2400 lbs vs 600 hp - 4 lbs / hp
2300 lbs vs 600 hp - 3.83 lbs / hp.
You'd never know the difference.
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You may be right, but that still sounds like a free 25hp to me... plus what I gain in turning, stopping and accelerating.
Why would you turn your nose up to that when building your ultimate street beast? |
11-20-2016, 08:15 AM
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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: 2,446
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Not Ranked
Quote:
Originally Posted by blykins
Power to weight ratio....
2400 lbs vs 600 hp - 4 lbs / hp
2300 lbs vs 600 hp - 3.83 lbs / hp.
You'd never know the difference.
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I look at it differently:
2400 lbs / 600 hp = 4 lbs / hp
2300 lbs / 575 hp = 4 lbs / hp
The 100 lb saving is 25 hp I do not need to have for the exact same acceleration, plus better handling in the corners.
Now compare an all cast iron FE (original) to an all aluminum 5.0 based stroker with a 4.125 bore. That isn't apples to apples but the smaller engine does not have all the issues that an aluminum FE has. |
11-27-2016, 05:11 AM
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CC Member
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Join Date: Aug 2002
Location: Richmond,
VA
Cobra Make, Engine: Superformance Mk III / Windsor platform
Posts: 450
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Not Ranked
Quote:
Originally Posted by blykins
Power to weight ratio....
2400 lbs vs 600 hp - 4 lbs / hp
2300 lbs vs 600 hp - 3.83 lbs / hp.
You'd never know the difference.
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Unless you are drag racing. Rule of thumb is that every 100 lb reduction in weight shaves 0.1 seconds off elapsed time. That's a very big deal. |
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