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Y-Blockhead · 04-28-2012, 09:47 AM

The '54/55 distributor is a Load-o-matic and has vacuum advance only which is designed to work with your original carburetor. With the later carb you should use the distributor from a '57 up that has both vacuum and mechanical advance.
By the way "312 heads" is a misnomer. There are no 312 specific heads. Well, except for maybe the ones on the F code cars.

04-28-2012, 09:47 AM	#2
Y-Blockhead Senior Member Join Date: Jul 2011 Location: Redondo Beach, CA Posts: 7,295	Re: Y block distributor The '54/55 distributor is a Load-o-matic and has vacuum advance only which is designed to work with your original carburetor. With the later carb you should use the distributor from a '57 up that has both vacuum and mechanical advance. By the way "312 heads" is a misnomer. There are no 312 specific heads. Well, except for maybe the ones on the F code cars. Last edited by Y-Blockhead; 04-28-2012 at 10:13 AM.