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68gmsee · 10-21-2009, 11:04 PM

Condition of the engine has an affect on vacuum also. If it's old and long in the tooth, it may need some valve or ring work.

10-21-2009, 11:04 PM	#6
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: The best way to Generate more Vacuum? Condition of the engine has an affect on vacuum also. If it's old and long in the tooth, it may need some valve or ring work.