Al Neal 275 SB2.2
 
Physical Specifications
GM 12480011 (SB2.2) Castings
Intake runner volume     275cc
Combustion chamber volume     54cc
Intake Valve     2.150 dia. x . length
Exhaust Valve     1.600 dia. x . length
Intake valve angle 11 deg. x 4 deg.
Exhaust valve angle 8 deg.
Intake port opening at gasket     2.045H x 1.515W
Distance from floor to deck at gasket     2.11
Intake min. cross sectional dim.     2.774 sq. in.
Al Neal 275 SB 2.2

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