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Old 02-05-2014, 12:10 AM
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Horsepower?

Can somebody tell me how much horsepower I can expect out of a 454 w/119cc heads,43cc forged dome pistons, and a 4.000" stroke

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Old 02-05-2014, 12:14 AM
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Need more information, cam specs, c.r., exhaust system, ignition, carb and intake. All you're sharing here is a bare block with pistons in it.
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Old 02-05-2014, 01:34 AM
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12.9:1
Forged 48cc Dome Pistons
Edelbrock Performer 2-0 Intake Manifold*
Edelbrock Performer 750cfm Carburetor*
Edelbrock Performer-Plus Hydraulic Flat Tappet Camshaft .500''/.500'' Lift292/302 Adv. DurationIdle-5500 RPM Range*
& 119 oval port heads
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Old 02-05-2014, 09:37 AM
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I doubt it would run on pump fuel.wrong intake,carb too small.

Is this a test of an imaginary engine?
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Old 02-05-2014, 03:31 PM
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It's an actual engine I'm trying to put together & get about 400+ hp out of without redoing the bottom half. This is one scenario I was wondering would work by using high compression pistons. Any suggestions?
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Old 02-05-2014, 03:55 PM
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for perspective purposes;
an LS-1 is a well thought out fuel injected,roller cam 350 that makes 345 horse power.

you want to take an old generation 1 350 ,toss on a few random parts and make 400 horse power?

you need to use better parts than found on an LS-1.
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Old 02-05-2014, 07:58 PM
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Not a 350 a 454
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Old 02-05-2014, 08:45 PM
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9.5:1 cr/.550 lift roller hydraulic short duration wide lobe displacement angle,"rpm" intake,850 CFM carb,headers,clean up the stock heads(which heads do you have?if peanut port? not as good as almost everything else)
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Old 02-05-2014, 10:42 PM
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Never gonna use that Ede cam with 12:1 CR. Aint gonna happen.
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Old 02-05-2014, 10:49 PM
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I have the 781 heads
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Old 02-05-2014, 11:10 PM
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781s,punch them out to 2.19/1.88 valves and a little clean up and hang on,,,,it will produce 400 hp with a plug wire off
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Old 02-06-2014, 01:40 AM
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What about the pistons,leave them stock? I was gonna go with .060 dome pistons
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Old 02-06-2014, 02:48 AM
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I just found some .060 over pistons with a 25.7cc dome that says their 9.61:1cr w/119cc heads... Could I use this setup with a .550 lift cam & get 400 or better hp?

Last edited by MalibuMike; 02-06-2014 at 03:10 AM.
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Old 02-06-2014, 07:58 AM
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you ave to varify piston domes and combustion chamber volume yourself,it has to be measured.You will have more than 400 hp if you follow what I said
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