What heads would have come with an ss350 engine? And what valves?

 

this may help

http://www.camaros.org/l30m20.shtml





1968 casting number= 3917291***
327/275, 350/295
Temperature sending boss tapped for sending unit.

*Large valve versions of the same casting were used by higher performance engines like the 302.
**All had a double-hump casting symbol, 63.305-cc chamber, 1.94-in. inlet, and 1.50-in. exhaust.
***A very late build, T0702EE, example of an L30 engine with 3947041 heads (casting normally attributed to 1969 model use), dated F018/F268, has been found. These heads do not have the drilled and tapped 1969-type accessory holes.