'True' Factory Compression Ratio's

1964 and 1965 ~ '426-S' 'Street-Wedge' 365 Horsepower

Factory Listed
* Compression Ratio ........ 10.1 - 1
* Piston Deck Height ........ {-.042"}
* Piston Type ................... Flat Top
* Head Gasket ................. .020" Thickness

Cylinder Head .... #2406516 ~ 'Closed Chamber'
Combustion Chamber ........ 73.5 CC's {Minimum} ...... 79.0 CC's {Factory}

Notorious for having a tall deck, with the Pistons located 'deep' in the Cylinder,
usually around {-.075"}

'True' Compression Ratio as it left the Factory .... 9.0 - 1