I see that cam in the middle, below is more so called RV cams above it street strip type, it's about big as you can go before you start sacrificing bottom end for top end, should get close to 1 hp per cid.
ive got the 268h comp cam 218@50 454 110lsa in a 100k mile 68 340 weiand stealth 650 dp and a unilte had 3.23s now 3.91s
better cam then the stock 340 cam
that motor went 14.3 97 all stock 85k miles in 68 gts its in my 67 gt vert now feels 13.7 or 8 now with the carb and cam
i think its a great street cam for 3.23s