cdsorkin@ix.netcom.com wrote:
>  I want a needle that is slightly leaner at idle, but identical on the rest 
>of > the profile.  I thought that I should have an ABC or an AN needle, but 
>upon > consulting the Haynes SU Carburetor book, I am now not so sure.
 
> Additionally, should the '74 (late in the production run, US, non-CA specs) 
>have a 25D or a 45D distributor?
Bentley says 12V 778F/H101 engines and onwards should have an AAC needle
AN is standard, H6 is rich, GG is "weak" not lean. (up to engine #12V
588F/101
Dizzy should be Lucas 25D serial # 41270.
Hope this helps
-- 
Frank Clarici
Toms River, NJ
The bug in the rice bowl
http://www.exit109.com/~spritenut
 
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