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Thread: Vortec 305 Heads On A Vortec 350
          
   
   

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  1. #3
    shawnlee28's Avatar
    shawnlee28 is offline CHR Member Visit my Photo Gallery
    Join Date
    May 2004
    Location
    so.cal
    Car Year, Make, Model: 66 c 10 fleetside longbed
    Posts
    1,942

    Those heads are either 56 or 58 cc.With the old head ccs you could determine how much of a increase you would get,...ie 1/2 point 2 points more.If the numbers are on the block front pad ,block is not milled ,That leaves the pistons.025 approx down in the hole . You could peek in the sparkplug hole and see what type pistons,d-cup,flat top or big dish and get an approxamate static compression,need cam specs for dynamic compression.Could end up with pretty good gas mileage with those heads too I could see 1200 rpm at 65 cruse with that set-up. My mustang at 65 is at 1500 rpm and thats a 302 , plus more vehichle weight.
    Last edited by shawnlee28; 11-09-2006 at 10:59 PM.
    Its gunna take longer than u thought and its gunna cost more too(plan ahead!)

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