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General Discussion => GS Questions => Topic started by: nailr65 on October 11, 2010, 05:14:44 AM

Title: Carburetor Auto/Manual
Post by: nailr65 on October 11, 2010, 05:14:44 AM

I'm a car buff but still educating myself about certain things.  Question:  What is the difference between a carb for and automatic transmission and a manual transmission?

Title: Re: Carburetor Auto/Manual
Post by: wildcat65 on October 11, 2010, 09:29:44 AM

Check the manual- (this website is awesome!) page 47 has the info on the carbs.

http://www.65gs.com/65%20Buick%20Gran%20Sport%20Service%20Manual/1965%20BUICK%20SKYLARK%20GRAN%20SPORT%20SERVICE%20MANUALindex.html

Cheers

Title: Re: Carburetor Auto/Manual
Post by: WkillGS on October 12, 2010, 08:38:26 AM

The automatic carbs have the vacuum passage for the distributor advance located below the throttle plates.....that is considered 'manifold vacuum'. The manual tranny carbs have the vacuum passage right at the throttle blades....that is some sort of 'ported vacuum'.