1970 Dodge Dart 318 upgrades

I do not see any reason for a comp .842 Dual energy for a mopar The dual energy series cheaps out

Cheap out! LMAO!
1: There is no reason to run a specific .904 lobe on a low performance intended cam. Ever.

2: .842 lifters can handle very aggressive ramp rates.

3: You would never need to explore an aggressive .842 cam lift. There already are tens of thousands of logged dyno runs on every engine out there now.
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but get your rocker geometry right first- spend the money there
Good advice.