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Join Date: Dec 2016
Location: NE Jefferson County, WA
Re: Need 427 build advice
If you're already buying new valves for the 781's, I'm betting it wouldn't cost much more step up to 2.19 intake and 1.88 exhaust valves. Of course how much more power you'd gain by installing larger valves depends on your cam choice, intake/carb choices and whether you decide to run headers.
Have fun with your build. The 427 is my all time favorite big block.
First Posted to TC as Ole Birkland in Feb 1999
1969 Chevelle SS396, L78, M22, KK 4.10 posi, F41, Blue Light Stereo, Tilt Column, Burgundy/Maroon w/Red Stripe, Black Bench Seat, PS,
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PDB, American Torque Thrust & BFG TA's, fully restored.