LT1-LT4 Modifications 1993-97 Gen II Small Block V8

oil pump dilema

Thread Tools
 
Search this Thread
 
Old Mar 2, 2010 | 01:11 PM
  #1  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default oil pump dilema

I have a few questions about replacing my oil pump,

1. how do i remove the shaft from the old oil pump? the old oil pump is the one on the red rag, does it come apart at the red part?

2. Can i replace the screen by just swapping the bottoms of the pumps.

Thanks guys!
Reply
Old Mar 2, 2010 | 01:16 PM
  #2  
jaycenk's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jun 2009
Posts: 2,210
Likes: 1
From: Holiday, FL
Default

Take the drive off at the red plastic coupler and get another one. get one to replace it. I don't know about using the base.
Reply
Old Mar 2, 2010 | 02:31 PM
  #3  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

how do you pull it off?
Reply
Old Mar 2, 2010 | 02:41 PM
  #4  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,146
Likes: 62
From: Little Rock, AR
Default

Originally Posted by boostedpower
how do you pull it off?
With your muscles. You will probably break the nylon coupler anyway, so just twist and tug it away from the pump. Get a Melling IS-55E shaft. It has a metal coupler (better). http://shbox.com/1/op_shaft.jpg

I would not use the cover from the old pump. They can get wear in them from the gears. I personally don't like to reuse a screen, either. The interference fit in the pump will not be as tight if you remove and reuse. Orient the angle of the new screen just like the old.
Reply
Old Mar 2, 2010 | 02:46 PM
  #5  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

I don't have time to replace the screen, however you were right on point about the coupler, i Pulled them apart and it snapped right off, I am getting the car tuned next friday so waiting for parts, isn't really and option at this point And if it isn't ready, well I can start looking for a new job...
Reply
Old Mar 2, 2010 | 02:47 PM
  #6  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

Where would they have a new coupler? napa, advanced, pep boys? anyone?
Reply
Old Mar 2, 2010 | 03:26 PM
  #7  
RallyBoy's Avatar
Launching!
15 Year Member
Liked
Loved
iTrader: (1)
 
Joined: Dec 2007
Posts: 223
Likes: 0
From: Dallas, Texas
Default

Like shbox said, go to your local parts store and purchase the melling IS-55E oil pump drive shaft. It is only about $10. It is money well spent instead of trying to buy the coupler alone.
Reply
Old Mar 2, 2010 | 03:45 PM
  #8  
GIZMO's Avatar
TECH Addict
iTrader: (8)
 
Joined: Jan 2004
Posts: 2,780
Likes: 3
From: Shelby, NC
Default

The stock coupler works just fine when installed properly (always use a new one). Ever noticed how many late model high mileage small blocks are out there?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 2, 2010 | 03:52 PM
  #9  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

Which auto store? advanced, napa, pepboys, any body have any suggestions i should try, I tried the dealerships but none in stock...
Reply
Old Mar 2, 2010 | 03:55 PM
  #10  
GIZMO's Avatar
TECH Addict
iTrader: (8)
 
Joined: Jan 2004
Posts: 2,780
Likes: 3
From: Shelby, NC
Default

NAPA should have about anything you need. Including a new pick-up.
Reply
Old Mar 2, 2010 | 04:08 PM
  #11  
fergymoto's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (129)
 
Joined: Aug 2005
Posts: 2,810
Likes: 3
From: Rock Hill, SC
Default

I used to work at Advance a few years back and we definitely stocked the IS55E shaft.
Reply
Old Mar 2, 2010 | 04:51 PM
  #12  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,146
Likes: 62
From: Little Rock, AR
Default

Originally Posted by boostedpower
Which auto store? advanced, napa, pepboys, any body have any suggestions i should try, I tried the dealerships but none in stock...
Autozone stocks it.
Reply
Old Mar 3, 2010 | 03:55 PM
  #13  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

Okay guys, you would think after I got the pick up tube, and the drive shaft with the metal coupler I would be done, well not quite, The oil pick-up tube is IMPOSSIBLE to install! I have tried over and over with no luck, and i don't want to bend or disfigure this pump! how did you guys install yours (pick-up tube is a 5/8") here's some pics! ---------->



Thanks again guys (And advanced had both in stock!) (surprising I KNOW! )
Reply
Old Mar 3, 2010 | 04:35 PM
  #14  
fergymoto's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (129)
 
Joined: Aug 2005
Posts: 2,810
Likes: 3
From: Rock Hill, SC
Default

It's an interference fit. You need an installation tool.
Reply
Old Mar 3, 2010 | 05:01 PM
  #15  
shbox's Avatar
TECH Veteran
15 Year Member
Liked
 
Joined: Dec 2008
Posts: 4,146
Likes: 62
From: Little Rock, AR
Default

If you don't have an installation tool, use an open end wrench to slip over the pipe and butt against the little collar. Hammer on the wrench close to the pipe. You have to hold the pump still and the pipe has to go in perfectly straight for it to get started. It is not always an easy task. Get the angle of the screen correct before it goes in much or you might not be able to adjust it later. You might try cooling the screen, too.
Reply
Old Mar 3, 2010 | 05:47 PM
  #16  
fergymoto's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (129)
 
Joined: Aug 2005
Posts: 2,810
Likes: 3
From: Rock Hill, SC
Default

Some good points from Rob. Put the screen in the freezer for a while
Reply
Old Mar 3, 2010 | 05:59 PM
  #17  
boostedpower's Avatar
Thread Starter
Launching!
 
Joined: Jan 2010
Posts: 248
Likes: 0
From: Maryland
Default

Thanks SHBOX! From reading your pages, I know I can trust your info! and thank you fergymoto for your continued support and help, anyone can feel free to respond to this post. by any chance (totally off topic) can you estimate my the general range HP/TQ and quarter times? just getting a little excited, getting close to finishing up the motor and I'm priming the oil pump tonight after i get this damn OIL SCREEN in the DAMN HV PUMP! *stock pan* also here are the mods if you are so inclined! LT4 hot cam, TB by-pass, Comp Cams 1.6rr, LT4 Spring (I believe got a kit from "paceperformance.com") Ported: Airfoil, Throttle body, and Manifold, Pacesetter Long tubes with off-road Y, magnaflow cat (taking this off for tuning) SLP Loud mouth (1 I believe no idea) 160 thermo, SLP fan switch, Hotchkis rear suspension kit (panhard rod, And trailing arms) B&M Short shifter, skip shift delete....... In the near future I will have 4.10's in the rear (maybe 3.73's but not likely, I hear 4.10's are fine for daily driving)
Thanks in advance guys!
Reply
Old Mar 3, 2010 | 06:11 PM
  #18  
jaycenk's Avatar
TECH Addict
iTrader: (1)
 
Joined: Jun 2009
Posts: 2,210
Likes: 1
From: Holiday, FL
Default

not to sure about that HV pump man. most don't use those.
Reply
Old Mar 3, 2010 | 06:11 PM
  #19  
fergymoto's Avatar
12 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (129)
 
Joined: Aug 2005
Posts: 2,810
Likes: 3
From: Rock Hill, SC
Default

Probably high 12s/low 13s. Once you learn what it likes at the tracks probably 12s no problem.
Reply
Old Mar 3, 2010 | 06:16 PM
  #20  
bww3588's Avatar
12 Second Club
20 Year Member
iTrader: (49)
 
Joined: Sep 2005
Posts: 8,139
Likes: 10
From: Chillicothe/Lima, Ohio
Default

i bolted the pump to the block, then used a soft rubber mallet to pound the pickup into the pump. when i got it where i wanted it, i welded it in place.
Reply



All times are GMT -5. The time now is 06:56 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE