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

O-M-R

Those 'Duster 340' results, probably with 3.23 Gears.

On the 1972 340, NHRA has

* Compression ............... 9.32 to 1
* Camshaft..................... .429" / .444" Lift ~ 268*/276* Duration ~ 44* Overlap ~ 114* LSA

* Cylinder Head .............. #3418915 ~ 1.88" Intake / 1.60" Exhaust
* Combustion Chamber.... 64.7 CC {Minimum} ~ 71.0 CC {Factory}

* Piston Type................... Flat w/Notches
* Depth........................... -.054" {In the Cylinder}
* Head Gasket................. .036"

* Carter Thermoquad....... 800 CFM

The Mopar Sales/Specification Brochure states 8.50 to 1 Compression.