SBC head ID. Weird!

[ClassicRob]

A buddy has these and we can’t figure out what they are. Any ideas??

<a href="https://ibb.co/5Yv1Zrf"><img src="https://i.ibb.co/6vbyQHf/5-D74-C47-D-8- ... 35-C50.jpg" alt="5-D74-C47-D-8-D95-4-E8-B-9786-C49-C0-B535-C50" border="0"></a>
<a href="https://ibb.co/WBfsZKY"><img src="https://i.ibb.co/Yfhbmjq/496-D1709-C2-C ... 2-A355.jpg" alt="496-D1709-C2-C0-4-C11-BCA4-3-D53-CC82-A355" border="0"></a>
<a href="https://ibb.co/sWFbFDB"><img src="https://i.ibb.co/41jKjDQ/D294-E1-F4-CD4 ... -B2-CF.jpg" alt="D294-E1-F4-CD43-4-E79-9-EDF-DAE84-E66-B2-CF" border="0"></a>
<a href="https://ibb.co/mFTswQh"><img src="https://i.ibb.co/DgWXy3w/E312-B1-C3-A3- ... BC3-DD.jpg" alt="E312-B1-C3-A3-A0-411-F-9-E56-FC1-FD68-BC3-DD" border="0"></a>
<a href="https://ibb.co/2FVGWb4"><img src="https://i.ibb.co/b6wcQf9/550-C22-ED-870 ... EE6-EA.jpg" alt="550-C22-ED-8704-4984-9-DFB-747-C4-F5-EE6-EA" border="0"></a>
<a href="https://ibb.co/DpMqHgg"><img src="https://i.ibb.co/GTMh433/395-ADC9-E-08- ... 9-AA81.jpg" alt="395-ADC9-E-08-BA-4711-A8-EA-DF00-DC09-AA81" border="0"></a>
<a href="https://ibb.co/DQ5xTT7"><img src="https://i.ibb.co/zZGyDDS/13582-B94-5737 ... B2-B65.jpg" alt="13582-B94-5737-4-D28-A0-E8-E15-C7-A5-B2-B65" border="0"></a>
<a href="https://ibb.co/j66N53G"><img src="https://i.ibb.co/bWW03NL/D06-B73-B1-A75 ... -BB522.jpg" alt="D06-B73-B1-A759-4776-ADDB-14-A7533-BB522" border="0"></a>
<a href="https://ibb.co/HnfmScy"><img src="https://i.ibb.co/86LFCyw/B473-E192-5840 ... 8-CEA8.jpg" alt="B473-E192-5840-4-D90-AF81-1-D075-C88-CEA8" border="0"></a>
<a href="https://ibb.co/tC6Bgw4"><img src="https://i.ibb.co/QmV9L7f/C4-F8-D061-244 ... 0950-F.jpg" alt="C4-F8-D061-244-E-4453-978-F-8-ED3-CAE0950-F" border="0"></a>

[F-BIRD'88]

Could be early World Products or Topline EngineQuest
or a private label version of...
You'd want to measure the chamber and intake port volume then flow test them.. A good idea to Mag test before investing..

[F-BIRD'88]

Post a pic of the combustion chamber and deck coolant holes.

[JoePorting]

Looks like the old World Products iron heads from the early 1990's, although I think they use to have a cast "WP" over the intake port.

[BOOT]

Yah those are Dart or World Sportsman II

The deck/chambers is a give away right by the runners, plus the 137 is on all my sets

Here are my sets, oldest has low factory type valve cover rail

https://youtu.be/O6Ovmy7iX4U

[PRH]

Look like World Sportsman II’s to me.

I built a bracket race 383 with a set over 20 years ago....... pretty decently ported(flowed 280-ish)..... made about 600hp.