1968 and 1969 .......... 383/290 HP {2-Barrel}
Factory Listed
* Compression Ratio ........ 9.2 to 1
* Piston Deck Height......... {+.021" above deck}
* Piston Dish ................... -.120" {Volume 13.76 CC's}
* Head Gasket ................ .020"
Cylinder Heads ... #2843906 {Open Chamber}
Combustion Chamber ....... 79.5 {Minimum} ........ 86.5 {Factory}
Typically, the Dished Pistons sat below the deck, and down in the
Cylinder anywhere from {-.020"} to {-.035"}.
'True' Compression Ratio as it left the Factory ... 8.2 - 1
