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03-21-2009, 08:19 PM
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#1 |
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Registered User
Join Date: Oct 2006
Location: Temecula,CA
Posts: 309
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BBC Horsepower Estimate
I am currently building a big block and was wondering if I could get some input on how much power it will make. Here is a list of specs:
468ci -10:1 compression -stock crank and rods -1969 427 vette heads (ovals) 3919840 casting numbers -- 2.19 int. & 1.88 exh. valves with some port work and bowl blending -hydraulic cam with .575/.575 lift and 306 total duration on a 108 lobe center -RPM Performer Air Gap Intake-Edelbrock (dual plane) -Holley 800cfm double pumper I'm thinking in the 500 range, but you never know. All help is appreciated. Thanks.
__________________
Nick Old pic of my 72: http://img340.imageshack.us/my.php?image=img0435co5.jpg 04 Silverado Daily Driver 68 GMC short step http://67-72chevytrucks.com/vboard/s...d.php?t=379665 "I'll beat you to the gas station!!"  
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03-22-2009, 12:24 AM
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#2 |
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Registered User
Join Date: Feb 2009
Location: Plano, TX
Posts: 14
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Re: BBC Horsepower Estimate
Ya you sound like you are in the 500 range but what heads do you have. with a desent set of heads you should be making well over 500 close to 550 and of course it will be a torque monster bc of the big CI
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03-22-2009, 03:58 PM
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#3 |
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Registered User
Join Date: Oct 2006
Location: Temecula,CA
Posts: 309
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Re: BBC Horsepower Estimate
The heads I have are similar to the 781 heads. Thanks for the input.
__________________
Nick Old pic of my 72: http://img340.imageshack.us/my.php?image=img0435co5.jpg 04 Silverado Daily Driver 68 GMC short step http://67-72chevytrucks.com/vboard/s...d.php?t=379665 "I'll beat you to the gas station!!"
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03-23-2009, 12:16 AM
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#4 |
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Registered User
 
Join Date: Jul 2008
Location: Olive Branch,Mississippi
Posts: 347
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Re: BBC Horsepower Estimate
Maybe high 4 s
__________________
Built chevy tuff! 
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