Old TRW Catalogue, Any body have one?

Nope again. Not a SCJ. A Boss/SG head.

I am well aware the Boss 429 is also known as the Shotgun 429.

The info in post #26 comes from the Complete Book of Engines, #6. Although it doesn't say it in the pic, the caption on the next page says it was O ringed & dry decked. There is ANOTHER pic of the same head [ see below ] & it CLEARLY shows the valves are NOT in line as in a Chry Hemi. Caption reads: ' The Boss 429 series is strictly a Nascar type racing engine with semi hemi alum heads.....but is available...in the Boss 429 Mustang'. I presume the 'semi' comes from the valves being offset. The SCJ head valve arrangement is like a 351C head.

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