Andy,
Wish I could help you but I didn't even realize there were differences
in the head castings for the 1147s. I'm saving some 1147 parts on the
off chance that Susan might some day have to race with one of those
engines (hope it never happens!) so any info you get I'd like to hear about.
Brad
Herald948@aol.com wrote:
> Apologies for an on-topic post. :-)
> Back on September 10, I posted the following...and got virtually no
> response, save for a few people who offered bits of information...or sympathy
> for the
> lack of response from others. So I thought I'd give it one more try....
> ============
>
> Can any of you of the early Spitfire persuasion give me a primer on the
> "good" and/or "better" cylinder heads? I'm really interested to know about
> casting numbers AND stamped numbers, what the differences are, why the
> 303014
> (casting number, I think) head was once banned in SCCA Production racing but
> is
> now allowed again and what's so special about that particular head...in
> short, any such details you'd care to share.
>
> I know someone once told me that one or more of the 948cc heads was good
> as well; unfortunately, I lost the details on that in a long-ago computer
> crash.
>
> Thanks for any and all insights!
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