Autolite 4100 Cal emissions difference?

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JC Mustang

Founding Member
Nov 1, 2000
142
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Layton, UT
I think I found the difference. So far all I've been able to find is that they are jetted differently (less/smaller, whatever the proper terminology would be).
 

runawayabc123

Member
Mar 9, 2007
187
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16
Wisconsin
This has come up once or twice before on the differences. The bottom line is that the Cal emmissions one was designed for larger displacement motors then the 289/302. It isn't recommended that you get a cal emmissions unless you are putting it on a car that it was intended for. It is possible that the Cal emmissions one has other internal differences as well.

Someone else who posted in that thread (maybe a year ago now?) may come along, remember and post about it.