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

Plugged oil pump

Thread Tools
 
Search this Thread
 
Old Jan 11, 2022 | 09:33 PM
  #1  
GMRL's Avatar
Thread Starter
TECH Enthusiast
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
Default Plugged oil pump

Thought I should share this here.
My 97 Z28 developed an internal squeak, after a little bit of poking around. I figured out it was a cam lobe and lifter not playing along. When I took it apart, the front 2 cam lobes and rollers were pretty chewed up. Since I had it that far apart. I decided to swap out the pan gasket as well. When I removed the pan, I noticed an excessive amount of silicone was used. There was quite a bit of silicone chunks at the bottom of the pan and stuck to the screen.
Heres a pic of what came out of tje pickup.

Reply
Old Jan 11, 2022 | 11:05 PM
  #2  
pdxmotorhead's Avatar
TECH Addict
5 Year Member
 
Joined: Oct 2016
Posts: 2,513
Likes: 480
From: PDX-OR-USA
Default

Ugh,, bummer.
Reply
Old Jan 12, 2022 | 09:29 AM
  #3  
SS RRR's Avatar
Village Troll
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Oct 2002
Posts: 11,111
Likes: 598
From: Jackstandican
Default

The round plastic piece looks to be a centering pin for an intake gasket. How it and gigantic pieces of silicone got into the p/u screen would make for an interesting story.
Reply
Old Jan 12, 2022 | 04:02 PM
  #4  
GMRL's Avatar
Thread Starter
TECH Enthusiast
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
Default

Some sloppy work at some earlier point in its life Im guessing haha.
Reply
Old Jan 12, 2022 | 09:54 PM
  #5  
SS RRR's Avatar
Village Troll
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Oct 2002
Posts: 11,111
Likes: 598
From: Jackstandican
Default

There used to be cam stall threads galore of those who would experience spun bearings immediately afterward. Only explanation was a sloppy install. Once the timing cover is removed the front of the oil pan is exposed and if not protected by rags, acts like a catch all for anything that drops in front of the engine.
Reply
Old Jan 13, 2022 | 06:55 AM
  #6  
cbccadet2002's Avatar
Staging Lane
 
Joined: Oct 2020
Posts: 86
Likes: 7
From: St. Louis MO
Default

Thanks for that heads up SS
Reply
Old Jan 13, 2022 | 12:42 PM
  #7  
GMRL's Avatar
Thread Starter
TECH Enthusiast
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2005
Posts: 503
Likes: 54
From: TX
Default

Originally Posted by SS RRR
There used to be cam stall threads galore of those who would experience spun bearings immediately afterward. Only explanation was a sloppy install. Once the timing cover is removed the front of the oil pan is exposed and if not protected by rags, acts like a catch all for anything that drops in front of the engine.
I remember those threads back then.
Along with the CC306 cam installs with the rev limiter set at 6000 rpm lol.
Reply

Trending Topics

Old Jan 22, 2022 | 12:39 PM
  #8  
BALLSS's Avatar
TECH Veteran
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2008
Posts: 4,985
Likes: 113
Default

Even mr Goodwrench at Chevy dealer can FU a perfectly good engine by puking to much RTV on gaskets...like when the "repaired" a pan gasket leak when the car was under warranty

I found this when I did a cam swap



Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo




All times are GMT -5. The time now is 01:49 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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