[hound dog]

OK, just to stir the pot one more time I have taken the Dyno 2000 data that I have for my 393 using Lunati roller cam, Victor jr. heads and intake and given it a 4.190 stroke to make it a 427.6 cubic inch stroker. These are the numbers I got; max hp 506 @ 5000 and 5500 rpm (slightly less than the 393), and 564 lb/ft torque at 4000 (about 40 more than the 393). Now if I replace the head flow data with the data for the MINIMUM AFR 305 cc chevy head (no BB ford data) I get the following; max hp 583 @ 6000 rpm and max torque 592lb/ft at 4500 rpm. Both of these numbers are significantly increased over the small block heads. Now we all know that such a head design doesn't exist for the small block engine but it does show that existing heads do not supply enough cfm to justify stroking the engine to 427 cu. in. If someone had a nice set of aluminum Cleveland 4V heads that they could have ported, etc. to get the same airflow numbers as big block heads, then I think you could start to justify stroking the small block to 427. Otherwise I'm not sure it's worth the money. And Roscoe, the AFR heads do show an increase in HP over the Victor jr. also.
h dog