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Old 11-10-2005, 10:00 PM
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454 street engine ??s

454, std. bore
powerforged pistons
just over 9:1 compression
781 heads, stock valves, 3 angle valve job, pocket ported
lunati voodoo 256/262 cam
proform 1.7 ratio roller rockers
670 street avenger
performer rpm intake

any clues on power numbers???
and any advantages to swapping to a 750cfm speed demon??

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Old 11-10-2005, 10:31 PM
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I'd guess around 375-390 H.P. if you have 1 3/4" primary headers and a properly curved ignition system. The larger carb may give slightly higher 'peak' HP numbers, but the carb you have now should give great drivability and accelleration.
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Old 11-11-2005, 06:44 AM
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Quote:
781 heads, stock valves, 3 angle valve job, pocket ported

Big limiting factor (the stock valves)... Open them up for the 2.19/.188 valves and it will breath a whole lot better... Also switching to the 750 speed demon with the larger valves will work great together...
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