Which pistons for supercharged 306? Compression ratio questions

Is you motor a "o" deck??????? I assume you are using the same block.

If it is not and it is 8.2" (pistons are .010" in the hole) with a 4cc flat top here are your numbers.

Compression Ratio Calculator v2.d
Sunday, June 25, 2006 8:57 am

Bore Size: 4.040
Gasket Bore: 4.100
Piston Top Land Dia: 4.005
Stroke: 3.000
Connecting Rod Length 5.090
Compression Height: 1.600
Deck Height: 8.200
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 61.00
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:COMPRESSION RATIO: 9.221
-------------------------------------

calculation variables:

Piston to Deck: 0.010
Crank Throw: 1.500
Vol. Above Top Ring: 0.91 cc
Piston to Dec Vol.: 2.10 cc
Gasket Volume: 8.65 cc
Volume Clearance: 76.66 cc
Cylinder Volume: 630.19 cc
CID: 307.534

If you do have a "0" deck motor you'll be

Bore Size: 4.040
Gasket Bore: 4.100
Piston Top Land Dia: 4.005
Stroke: 3.000
Connecting Rod Length 5.090
Compression Height: 1.600
Deck Height: 8.190
Ring to Top of Piston 0.250
Gasket Thickness: 0.040
Valve Notches Volume: 4.00
Dome Volume: 0.00
Volume Head: 61.00
-------------------------------------
:COMPRESSION RATIO: 9.452
-------------------------------------

calculation variables:

Piston to Deck: 0.000
Crank Throw: 1.500
Vol. Above Top Ring: 0.91 cc
Piston to Dec Vol.: 0.00 cc
Gasket Volume: 8.65 cc
Volume Clearance: 74.56 cc
Cylinder Volume: 630.19 cc
CID: 307.534

(notes/messages)

× Piston Flush with Deck