http://garage.grumpysperformance.co...ch-is-best-steel-or-aluminum.3124/#post-12385
I think the cam I under lined in RED would be about as wild in duration as Id select for that car,
and Id add 1.6:1 roller rockers if I could afford to, as the added lift helps air flow.
ID also point out that even with that milder cam I underlined in red it will run noticeably better with a 2800 rpm-3000 rpm stall speed converter and a 3.55:1-3.73:1 rear gear ratio and a shift kit on the auto transmission.
that cam is also FAR more radical that the original 307 engine had and youll notice the BIG difference, even in the larger engine.
you always need to keep in mind the completed combo and how parts match, if your going to use a flat tappet hydraulic cam, and reasonably mild compression and a fairly low numerical rear gear (2.57:1-3.07:1) you can,t expect to throw a fairly radical cam in the engine and maintain really nice lower rpm torque, and enough plenum vacuum for power brakes and a smooth idle etc.