I hope you guys can help. My car and engine are far from matching #'s so with that in mind, i'm in the middle of rebuilding my SBC and am having a h*ll of a time finding out who and where my heads came from. I'm sure the are not a GM product because the codes are nothing like GM'S. Here is whats on the heads.

W 94 S/R
D12 NH 1-052 from firewall to radiator...!!!!! Any ideas..??? HELP.

Sorry the codes got scrunched. try this again

W 94 S/R
D12 NH 1-052

Do they look like these http://www.worldcastings.com/prods_pages/043600.htm or if they have 2.02 intake valves maybe these.. http://www.worldcastings.com/prods_pages/heads/srtorquer.htm

mark, heres the thing, the OD of where the valve seals sit is .574 and summit only caries up to .530. so I started looking into what heads they were and can't seem to find anything on line.I don't know why the #s keep scrunching up. firewall side of the head W&D12 under it, in the middle of the head- 94 with NH under it and S/R with 1-052 under it...??The second link u sent looks similar to mine.

World products SR torquers.Jeff

You sound adamant. If so thanks. This one was a head scracher.