Quick SBC cylinder head question

**Stefano** · #1 04-20-2009, 09:15 AM

I bought a set from Shepherd Chevrolet in the late '70s. Put my first multi-angle valve job, per the GM performance manual on them and fitted them with 2.05" Intake valves.

They were iron heads. I don't recall the casting number.

They performed great on the top end up to 8,000 rpms and allowed for plug changes with the headers much quicker.

**iluv69s** · #2 04-20-2009, 03:47 PM

the 292 "turbos" were angle plug.....they also made a 492 which was angle plug also I believe...both these were steel....I also have a set of angle plug o-dash part number alum chev. heads, but they are from 1963 I believe..then there is the "hemi" angle plugs from 69 which were aluminum. What heads do you have Charley? What year are they?

**Charley Lillard** · #3 04-20-2009, 06:42 PM

Mine have bolt holes on the end of the heads but I don't remember if they have dates. They aren't here to check. Part # is stamped on the end of each head.

**Charley Lillard** · #4 04-24-2009, 06:58 AM

I did find I have a set of Bowtie angle plug heads if anybody needs them. The Bowtie heads came later than the 292 turbos.

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