The
FalconSixPerformance manual helps think through a reasonable build schedule. Head and other work can start with measuring current 'CC.s of compression chambers of head used. Confidence in projected CR - static and dynamic depend on reasonable figures for the cam selection and machine work. Drivability upgrades for modern times, , cruise and show or real hot rod six money, planning the basic engine work can optimize your goal.
I got a quote from a shop here in town for all the machine work. They came back with something like $600 to hot tank, magnaflux, install new guides, complete valve job and cut for oversize valves, mill off 1 bbl boss, and 0.070" milled.
sounds like a plan' , the .070 cut will raise the compression ratio to figure.
My '63 wagon 170/5200/T5 gets @ 25 MPG but the worked D7 head running close to 10:1 SCR (48cc CC's and metal shim gasket) uses 93 octane minimum... , the '61 runs race gas at the track with 274 cam / 500cfm+ 2Bbl / blueprinted HiPo 250 (bored to 258) ,will shift @ 5000 RPM.
have fun
v .
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.. machinist asked
NOT to cut D6 250 head with OEM 62cc chambers at all for needed
low compression project: