. . . Average
thickness at front of head is 4.486" Average
thickness at rear of head is 4.475" Appears
to have .040" shims under towers DATSUN
U20 USED HEADS
Info .
Datsun
SRL311 Cylinder Head from Rallye Enterprises,
Ltd.



Appears
flat on both top and bottom.
For
General Info on U20 Heads click on Rebuilt
Heads
Info.
