DID SOMETHING SILLY STR12 INTAKE LOL
Well, from all of my reading and a drawing that I have somewhere, there were "internal fixes" of the bottom plate internally. This is where a small amount of "welding" at one end is supposed to prevent the fuel puddling from initial cold starting which resulted in the pressure that cracked many top plates. Probably as yellowrose stated that they placed a 1'' spacer between the two plates and this may help prevent the initial fuel dropping down out of the mixture and accumulating. I'm not the expert on this but was always annoyed that you never heard of this problem on the cross rams found on other small blocks, specifically the one for the Z-28 which has quite a lot written about it's use.
