I made my statement above, and so far, I'm not convinced

What I've seen and not made much if any comment on is that 400Hp is virtually a myth - and almost impossible on a "standard" Ford 239 plus whatever bore and stroke flathead without a very high output supercharger. I see people closing on 300 Hp on the site that Ken has shown - and with a nicely built engine. I really haven't seen any numbers anywhere near that mythical 400 number. Three main bearings........BANG.............massively shrouded exhaust, even with a splitter, an intake system that makes today's designers shudder, cylinder heads, even the pretty ones Ken pictured, that can't move air well, an oiling system that is inadequate, a cooling system that is horrible

The last flattie I built was 3 5/16"+.030 x 4" (~283cid) triple 97's, Offie heads and a Clay Smith track cam, port and polish, etc, etc, etc and I know it wasn't more then 225-250Hp, if that. It was replaced in the car with a 312" Y block Ford that was "225Hp" according to Ford lit that could run rings around it - before I did anything to it internally. Now, with that said, these are 'seat of the pants' numbers - except for the 0-60 times as well as quarter mile.

400Hp - please show me a streetable engines set of numbers. Has 400 been made - I'm sure, but who and when and how