Originally Posted by 72chevyBuild
Since my compression will be close to 10:1 do I need to change my converter?
With the 268H your dynamic CR will drop slightly to 7.78. Comp Cams literature shows the 270H as "Biggest cam with stock converter but better with 2000+ stall" so both the 260H and 268H are mild enough to work well with a stock converter, but both would show increased performance with a slightly higher than stock converter. On Comp Cams free simulator software, CamQuest.com
, the recommended TC for the 260H in a 327 is 1500-2500 rpm. The recommended TC for the 268H in a 327 is 2000-3000 rpm.