Stock LT4, LT1 oil pump
Thread Starter
Pro
Joined: Nov 2005
Posts: 536
Likes: 0
From: Bardstown Kentucky
Stock LT4, LT1 oil pump
Does anyone know what type of oil pump is in these 2 motors? High volume, high pressure, or both. And what after market pump closly matches it. I am building a 383 for my truck and would like to use one in it. I like the pressure my LT4 runs and would like my truck to do the same.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by 96lt4c4
Does anyone know what type of oil pump is in these 2 motors? High volume, high pressure, or both. And what after market pump closly matches it. I am building a 383 for my truck and would like to use one in it. I like the pressure my LT4 runs and would like my truck to do the same.
Thread Starter
Pro
Joined: Nov 2005
Posts: 536
Likes: 0
From: Bardstown Kentucky
Originally Posted by Dan Parker '96
The stock pump is considered "high pressure". And it's a very good pump. You won't gain a thing by going aftermarket.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
A good Melling or comparable replacement pump would be more than adequate for your purposes, about $35. Spend $10 more and also get their hardened shaft w/ steel coupler. Real cheap insurance.
Drifting
Joined: Jun 2001
Posts: 1,997
Likes: 1
From: Lake Ozark MO
Originally Posted by 96lt4c4
I dont want to do anything to the vette pump. I was just wondering what aftermarket pump matches the vette pump so I can put one in my truck.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
As far as I know the stock OE pump is a standard volume standard pressure pump. LPE recommends using a stock pump that is modified with the GMPP white Z28 high pressure releif spring which is about $4 from GMPP. It will give you about 70 PSI of oil pressure. Given the standard 10 PSI/1000 RPM of intended operating RPM range. I have personally used this same setup in several small blocks and never had an oiling issue. The LTx pumps are the same as any other GEN1 SBC, drive shaft and all.
Thread Starter
Pro
Joined: Nov 2005
Posts: 536
Likes: 0
From: Bardstown Kentucky
Originally Posted by tjwong
As far as I know the stock OE pump is a standard volume standard pressure pump. LPE recommends using a stock pump that is modified with the GMPP white Z28 high pressure releif spring which is about $4 from GMPP. It will give you about 70 PSI of oil pressure. Given the standard 10 PSI/1000 RPM of intended operating RPM range. I have personally used this same setup in several small blocks and never had an oiling issue. The LTx pumps are the same as any other GEN1 SBC, drive shaft and all.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
