View Full Version : cylinder head ID


cjm465
May 8th, 07, 03:22 PM
A friend of mine said he looked at some cylinder heads that were casting number #3946074, aluminum with Winters Snowflake. That's all the info I have. Any idea what they were used on, were they aftermarket or GM Parts? Also what might a set be worth in useable shape?

wagonman
May 8th, 07, 04:50 PM
3946074....

69&71...rect...OPEN...'69 427 L88, ZL1, Aluminum, 118cc chamber
'71 454 LS6, "round exhaust port"