Don't think the exhaust would make a difference (but don't know for
sure). With the Allison electronic ignition, you can still advance or
retard using the knob or by rotating the distributor, same as always.
You're probably thinking of a solid-state computerized ignition, as in
current vehicles.
GMGoodman@aol.com had this to say:
>My '72 B currently has stock exhaust ----I have to detune engine grossly to
>get thru emissions (retard spark/lean carbs/disconnect advance) is there any
>change in emissions by going to a Monza exhaust? Thats question one. Number
>2, if I went to an electronic ignition, am I correct there would be no way
>to
>retard spark prior to emissions test? Jerry
>
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Max Heim
mvheim@studiolimage.com
Studio L'Image/San Francisco
415 643 9309 : 415 643 9307 fax
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212 242 3366 : 212 242 3399 fax
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