So I'm getting ready to rebuild a 340

You guys need to be concerned with LSA just as much as duration at .050. So many people choose cams that have these tight LSA's and not much duration. Then they wonder why the engines aren't street friendly.

Compare for instance [email protected] cut on 104LSA vs. [email protected] cut on 114LSA.

Night and day...

Comp cams "street cam" in a 2010 Camaro is 231/247 on 113LSA.