Cam advice for more torque from 340

WSUTARD said

Ok. I'm going to order the XE268 or 262 today, the kit with lifters.

Milling might be out of the question. I will speak with my machinist again.

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See if you can find out how much he thinks they have been machined; give him that nominal stock depth of .090" in the flat open area if nothing else. There is info around on how to exactly measure the stock head deck form other reference points but I can't find the illustration.

The lower you go with duration, the more careful you need to be with the compression ratio. It might be wiser to wait 'til you get a bit more head milling data. But, you can always adjust head gasket thickness too. Mr Gasket 1121G is around .028" thick, Felpro 1008 is around .039" thick, and Flepro PT5883 is around .050" thick. so you can adjust the final product some with that.

Is the shop checking for flatness on the heads?