using an electrical fuel pump - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crm318 · 01-31-2007, 07:51 PM

im recently helping a buddy build a vortec headed 350 that doesnt accept mechanical fuel pumps. we bought a electrical fuel pump from mr. gasket and it says 12s on the side. we tried to start it today and it kept on clicking after it was already primed. then it looked like fuel was leaking out of the primary throttle shaft on the carb (quadrajet). what does the 12s mean. does this pump put out too much pressure? the engine didnt start anyways (initial start up and there a ton of things off im sure). what do yall think?

01-31-2007, 07:51 PM	#1
crm318 Alright Alright Alright Join Date: Mar 2004 Location: Midland, Texas Posts: 1,672	using an electrical fuel pump im recently helping a buddy build a vortec headed 350 that doesnt accept mechanical fuel pumps. we bought a electrical fuel pump from mr. gasket and it says 12s on the side. we tried to start it today and it kept on clicking after it was already primed. then it looked like fuel was leaking out of the primary throttle shaft on the carb (quadrajet). what does the 12s mean. does this pump put out too much pressure? the engine didnt start anyways (initial start up and there a ton of things off im sure). what do yall think? __________________ 1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies



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