I am cleaning a 1947 GMC 270 Short Block that I recently acquired. It was bored to .060 and came with flat top pistons.
I see that there were two heads that were available for this earlier 1947 270: 2136477 and 2193417 (casting codes).
I have a rough but original 228 with dome top pistons that has the 477 head. Yet, I also acquired a military 302 with .020 flat top pistons with this same casting code (477).
My questions are: Which head would be compatible to use? I can rebuild the 477 head from the 228 and install on this 270. Or should I search for another head that would best be suited for flat top pistons?
Is the 477 compatible with flat top and dome top pistons? There is also a more common 2194819 head - same would apply? Can I use this head too?
Thank you.
