360 Advice Needed - Autocross / Street Engine Build

We blended the edge of the spark plug thread. You can see it to left-side plug hole in first picture.

Note the actual bore is scribed unto the head by bolting them up to the bare block. Then you blend the side of the chamber to side of bore so there is not a tiny shelf there to shroud intake/exhaust flow and potential hot spot.

12_22_10sm5-jpg.jpg

Bowl porting. Those points and edges between the cast and machined were blended. These are in process pics. :

steves_engine-_heads_004-jpg.jpg

attachment.jpg

Exhaust:

steves_engine-_heads_002-jpg.jpg

Head runners:

11_20_10sm02-jpg.jpg

11_20_10sm01-jpg.jpg

11_20_10sm03-jpg.jpg

Intake:

6626415-IntakeToHeadMatching.jpg

2_4_11sm12-jpg.jpg