Head info,
http://www.edelbrock.com/automotive/mc/cylinder-heads/chevy/e-street-sb.shtml
(Has flow numbers in the link)
Combustion chamber volume: 70cc
Intake runner volume: 185cc
Exhaust runner volume: 60cc
Intake valve diameter: 2.02"
Exhaust valve diameter: 1.60"
Valve stem diameter: 11/32"
Valve guides: Manganese bronze
Deck thickness: 9/16"
Valve spring diameter: 1.460"
Valve spring maximum lift: .550"
Rocker stud: 3/8" with guide plate
Guideplate: Hardended steel
Pushrod diameter: 5/16"
Valve angle: 23°
Intake; it's the renegade, but i don't see those details available...
Headers; melrose long tubes, 1 3/4 primaries
For scr, looking for what it is now, or what it will be?
(See above sheet, current is engine #3.
Possible future is engine #4)