Build suggestions for 340?

HotRod20 said
Great thread.., but has anyone used the Lunati version of the 340 Hi Po cam part # 10201002...considering it for my build.
Lunati says: 298/308 duration @ 50 232/242, 462 intake lift / 473 exhaust lift LSA 112 /112. 2500-6500 RPM range. Also using J heads, with 2.02's. 68-70 exh, mans. Thinking about 2 1/2" head pipes with 3" H pipe exhaust dumping at rear axle, any feedback.?
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This cam is almost the identical grind I had in my Duster....450/.475 lift and 298/308 duration. It was a wicked combo with a nice, lumpy idle and balls aplenty. My only negative comment would be that my engine vacuum at idle was low enough to affect the power brake action, but that may also have been tied to the Torker single plane I was running.