[Spridgets] BMC / Spridget parts identification

HealeyRick healeyrik at gmail.com
Sat Nov 2 13:49:25 MDT 2019


Hi Chuck,

They're all right.  It's a 998 Cooper Head, an MG 1100 head, a Mk III
Sprite 1098 head, and it makes a nice head on a 948 (which I have on mine)

Cheers,
Rick Neville

On Sat, Nov 2, 2019 at 1:27 PM crusaderchuck55--- via Spridgets <
spridgets at autox.team.net> wrote:

> A long time ago in a far away galaxy...( oops!  Wrong story!)
> Ok yes a long time ago I was deeply involved in the early days of what
> became the 55-57 Chevy craze.  Where this is going is I'm having difficulty
> decoding and understanding casting dates or codes and some contrary casting
> number aplication references in order to understand some of what I've
> required over the years.   In the general motors world every casting not
> only had a raised part number but also a casting date.  You knew you had a
> February 1955 intake manifold by the part number and the casting date.
> Yesterday I found a 12G295 bare ( kinda rusty too!) Cylinder head in some
> forgotten stuff.
> One site states it's a 1100 MG head , another states it is a 998 Cooper
> head AND yet another states its a good 948 head without refrence to its
> original intended application be it a specifi c displacement motor OR a
> spread of ( start to end of use?) Application years .  ALSO I'm finding
> references to "home market" & " export market".
> So it starts with a "12G" does that denote 1275 original application?  Is
> it indeed a 1098/1100 head ( I may need a 1098 head?) ?
> Im a lot behind in the decoding of these items.  I simply used what I had
> years ago..
> Thank you!!
> Chuck
>
>
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