Nason Cylinder head - bare - 960030

Specifications
Combustion Chamber Volume:	68cc
Intake Runner Volume:	262cc
Intake Port Size H x W:	2.585" x 1.185"/65.66mm x 30.10mm
Exhaust Runner Volume:	85cc
Exhaust Port Size H x W:	1.46" x 1.60"/37.08mm x 40.64mm D Port
Intake Valve Size:	2.165"/54.99mm
Exhaust Valve Size:	1.589"/40.38mm
Valve Length:	Standard Length
Valve Guide Seal Diameter:	0.502"/12.75mm
Valve Guide Material:	Cast Iron
Maximum Valve Spring Diameter:	1.340"/34.04mm

Description

Bare Head - Suits Engines With Rectangle Intake Ports

Flow Data @ 28"(CFM) With 2.165" & 1.600" Valves

Intake

@.200" = 132

@.300" = 200

@.400" = 256

@.500" = 289

@.600" = 302

@.700" = 314

Exhaust

@.200" = 106

@.300" = 150

@.400" = 181

@.500" = 202

@.600" = 213

@.700" = 219