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Hog · 08-05-2014

Just so you guys know, the 1996- EP381 (25163473) is used on the Vortec 4.3 V6, the Vortec 305(L30), 250 (L31) and Vortec 454(L29). $70 from Rock Auto, sock not included.
The stock fuel pressure on the V6 and 305/350 is 63-66psi, and the pump will push 100psi if deadheaded.
These pumps are called for my Chev Performance Parts for the 502hp Ramjet 502, 4the all aluminum 493hp Ramjet Zl1 and 350hp Ramjet 350 crate engines.

You should have plenty of fuel for the highest output of LT5's.

08-05-2014	#9
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,271	Re: LT5 fuel pump? Just so you guys know, the 1996- EP381 (25163473) is used on the Vortec 4.3 V6, the Vortec 305(L30), 250 (L31) and Vortec 454(L29). $70 from Rock Auto, sock not included. The stock fuel pressure on the V6 and 305/350 is 63-66psi, and the pump will push 100psi if deadheaded. These pumps are called for my Chev Performance Parts for the 502hp Ramjet 502, 4the all aluminum 493hp Ramjet Zl1 and 350hp Ramjet 350 crate engines. You should have plenty of fuel for the highest output of LT5's.