Conversion chart

[ddsprint]

looking for a chart for the cc to thousands of an inch, say take a 0.045 off 64 cc chamber heads, what would the cc be once this has occurred, have not found the table yet, any help would be appreciated, thanks

[billetbirdcage]

looking for a chart for the cc to thousands of an inch, say take a 0.045 off 64 cc chamber heads, what would the cc be once this has occurred, have not found the table yet, any help would be appreciated, thanks

Cylinder head Mill head | intake face | manifold bottom
to reduce 1cc

SBC 64cc chamber .0055 .0123 .0173
SBC 76cc chamber .0059 .0123 not required
BBC 109cc closed chamber .0065 .0070 .0193
BBC 118cc open chamber .0050 .0070 .0193
Ford 65-77 289-302 engine .0060 .0100 .0143
Ford 69-77 351W engine .0055 .0100 .0143
Ford 78-up 302/5.0L/351W engines except 86 5.0 HO .0045 .0100 .0143
Ford 351C engine .0050 .0100 .0143
Ford 69-71 429-460 engine, quench head .0050
.0100 .0143
Ford 429-460 engine, open chamber head .0030
.0100 .0143
Chrysler 273-318ci engine, 57-61cc chamber .0053 .0095 .0144
Chrysler 340-360ci engine, 63-71cc chamber .0048 .0095 .0144
Chrysler B/RB engine, 66.5cc or 73.5cc chamber .0062 .0123 not required
Chrysler B/RB engine, 79/81/83cc chamber .0042 .0123 not required
Chrysler B/RB Max Wedge Engine, 81 or 86cc chamber .0050 .0120 .0170
Olds 403-455 Big Block engines .0050 .0130 .0169
Olds 350 Small Block engine .0060 .0130 .0169
Pontiac 65-67 .0061 .0061 not required
Pontiac 68-70 .0052 .0052 not required
Pontiac 71-79 .0047 .0047 not required


Keep in mind that is a rough estimate, but generally pretty close. That is also for flat milling not angle mill. So taking .045 off a 64 CC head will result in about -8.18 CC reduction in chamber (.045 / .0055 = 8.1818)

[powerslide]

From the brodix website for a SBC track 1

• Angle Milling:
.0078 in per cc
• Flat Milling:
.0060 in per cc

[TBRE]

That's what we go by, and most big block heads .0065 per cc, but any of them should be measured.TB

[ddsprint]

thanks for the info