Match Race 1972 ~ 'Duster 340 vs 'GTO 400'

69 Cuda 440 said
O-M-R

* Compression ............... 9.32 to 1

* Combustion Chamber.... 64.7 CC

* Depth........................... -.054" {In the Cylinder}

These three numbers are interesting. I guess I'm not surprised as Nhra had to be pretty liberal with the blueprint specs considering how far factory tolerances could vary.