BBC Horsepower Estimate - The 1947 - Present Chevrolet & GMC Truck Message Board Network

custom72c20 · 03-21-2009, 08:19 PM

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.

03-21-2009, 08:19 PM	#1
custom72c20 Registered User Join Date: Oct 2006 Location: Temecula,CA Posts: 309	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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