PART REFERENCE SHEET

"BIG M" ALUMINUM BIG-BLOCK CYLINDER HEADS
Int/Exh
Spring Dia.
Part #
Matl.
Description
Valves
S=Single
Cyl. Bore
D=Double
Dia.
16900000
Alum
410cc Bare Casting (No CNC Porting)
     
16934070
Alum
410cc Super Mod -Bare
2.350/1.880  
4.500
16934176
Alum
410cc Super Mod Assm.
  2.350/1.880 1.625D
4.500
16935070
Alum
410cc Super Mod -Bare
2.350/1.880  
4.600
16935176
Alum
410cc Super Mod Assm.
  2.350/1.880 1.625D
4.600