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Originally Posted by 72chevyBuild
Since my compression will be close to 10:1 do I need to change my converter?
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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.