408 W2 combo - where to from here
Just a "for what it's worth":
My 410 stroker has ported Edelbrocks, cam is a small street roller of about the same size (248/254 duration), 10.8:1 compression, pump gas, 750dp, Victor intake, 727 trans, 8" converter that flashes to 5000 rpm, 4.10 gears with 28" tall tires.
I drive this car all over town, very "street-able" in my mind...but opinions vary....runs 10.80's in full street trim with mufflers.
I think with porting and a GOOD converter, you should be in the low 11's...add some steeper gears and you're in the high 10's.....Just my opinion.