it all depends on the flavor.
1968 'barracuda 340-s' notchback ... #3074 lbs. Shipping weight
* carter avs #4933 = {630 cfm's}
* camshaft = .445"/.455" ~ 276*/284* {214*/222*} ~ 52* overlap
* compression ratio= 10.5
vs.
1971 'duster 340' .......................... #3154 lbs. Shipping weight
* carter thermoquad #4972 = {750 CFM's}
* camshaft = .430"/.444" ~ 268*/276* {210*/221*} ~ 44* overlap
* compression ratio = 10.2
