3.0 head specs please any help k1926c

[tuned6]

Hi. I have a set of heads that just need assembled and I am having a hard time finding specs for valve stem length and spring height.


Would anyone know these or know a reference?
Thanks in advance,
Christopher

[TibetanT]

I am no expert, but just did some of these on my rebuilding project for a 1983 911SC 3.0L. These heads seem to be the same year/vintage by date stamp.

Used specification 34.5 -0.3mm. Apparently, the 34.5mm spec must not be exceeded according to the factory manual for a 911SC Engine type 930.

Hope this helps you.

[tom1394racing]

The heads shown are 1980-83 SC small port heads