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flatheadmurre · 07-05-2019, 03:56 PM

With an area of the diapragm being 25% larger you need a 25% tougher spring for same fuelpressure...then the vacuumpart...might be a bit tough on the camshaft pumplobe...

07-05-2019, 03:56 PM	#13
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: Blackstone fuel pump With an area of the diapragm being 25% larger you need a 25% tougher spring for same fuelpressure...then the vacuumpart...might be a bit tough on the camshaft pumplobe...