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EP381 fuel pump upgrade for 90 5.7L?

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I need to change my fuel pump.

Does running the (high pressure) EP381 fuel pump (from a 96 Vortec) as a replacement pose any problems for a (mildly modded) 1990 5.7L TBI?

Any experiences with this upgrade?

My mods are mild now, but I am planning on more later and don't won't to limit myself with respect to fuel pump - if it doesn't hurt anything.


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I ran a Vortec pump in my '94 to gain a little fuel pressure since the stock TBI pump is rated around 15 PSI and mine was only putting out 13PSI max. I believe the Vortec engines run around 50 PSI so a Vortec pump running at a lower pressure should last a long time since it's not working as hard. I had it in the truck for a couple years with no issues running it at 16PSI with an adjustable regulator.

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