'True' Factory Compression Ratio's

1968 and 1969 ~ 318/230 HP ~ 2-Barrel

Factory Listed
* Compression Ratio ........ 9.0 - 1
* Piston Deck Height ....... {-.029"}
* Piston Type ................. Flat
* Gasket ....................... .020" Thickness

Cylinder Head ... #2843657 ~ 'Open Chamber'
Combustion Chamber ....... 60.6 CC's {Minimum} .... 67.0 {Factory}

Typically, the Piston was found deep in the Cylinder Bore, at approximately
{-.060"} to {-.070"}.

'True' Compression Ratio as it left the Factory ......... 8.1 - 1