I picked up these heads yesterday from a guy on CL he said they are dart iron 200cc heads 64cc but i cant find any info or real casting numbers. They have 2.02/1.60 valves, perimeter and center bolt hols for valve covers, angle plug, and comparing the intake runners to a LT1 gasket i had laying around the are the same size. i took tons of pictures so hopefully someone will identify these.

 

 

 

https://www.thirdgen.org/forums/post...371-post2.html

 

those are world products heads, sportsman IIs. Specs still on WC website:

Casting ID Number: I-037
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides: Integral cast iron
Spring Seats: Machined for 1.560" and 1.250"
Valves: Manley stainless steel valves in assemblies (inconel exhaust valves on marine applications)
Valve Diameter: 2.020"" intake, 1.600" exhaust (11/32" stem)
Guide Plates: Stock
Rocker Arm Studs: Screw-in style
Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
Intake Runner: 200cc, standard port location
Exhaust Ports: 69cc, standard location
Combustion Chamber: 64cc or 72cc, straight or angled plug orientation
Spark Plug: 14mm 5/8" .460" reach tapered style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised w/ perimeter and center bolt pattern
Valve Angle: Stock 23°
Accessory Bolt Holes: Stock
50-State Emissions legal
Accepted by most oval tracks and sanctions as stock replacements. Check with rule book

 

that is awsome thanks for all the info. Im sure these heads will be fine with some port and polishing on a 383 with some boost. i dont see any problems with these heads for $350