6x(8) head specs
 

I have a set of stock heads and was wondering what the valve, valve guide, seat and spring specs are for these heads im taking them apart in class and have no paper work for them

All 6X heads in stock form have 2.11" Intake valves and use a 30 degree seat.
The Exhaust valves are 1.66"and use a 45 degree seat.
Both valves are 11/32" stem.
Seat pressure was about 110 LBs, and I know that the installed height is about 1.56", but when you knock them apart you can measure that.
On the two verticle cast towers on each head that the air conditioning bracket would bolt to, one on each head will have a stamped number.
A number 4 would be the small chamber head 90 CCs, and the stamping 8 is the larger chamber head of some 98 to 101 CCs.
These heads can only handle about 490" of valve lift before retainer to guide clearance problems set in.

My original 180 HP motor's 6X-8s were 97.5cc.