C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

oilpan

Thread Tools
 
Search this Thread
 
Old Feb 13, 2023 | 10:22 AM
  #1  
Nilak's Avatar
Nilak
Thread Starter
Racer
Photogenic
Liked
Loved
Community Favorite
 
Joined: Sep 2021
Posts: 360
Likes: 59
Default oilpan

Anyone installed this on a C4 https://www.summitracing.com/parts/mor-21811? What things do I need to take into consideration like access for service, clearances?
my car is 1991 M6
Reply
Old Feb 13, 2023 | 12:49 PM
  #2  
FostersPerformance's Avatar
FostersPerformance
Melting Slicks
20 Year Member
Liked
Community Favorite
Top Answer: 1
 
Joined: Jul 2003
Posts: 3,495
Likes: 877
From: Saratoga Springs NY
2024 C4 of the Year Finalist - Modified
2022 C4 of the Year Finalist - Modified
Default

I have the Canton version of it. I build my engine on a stand, so if your going to install it with engine in car it CAN be done. Have to drop the 2 steel pieces under the pan and rotate the crank a bit to get old one out-new one in. You also have to change the oil pump pickup (at least I did).
But I saw your other thread about oil Temps. So if this is why your looking at this pan, I'd be looking into adding a decent oil cooler instead. I have a stacked plate B&M cooler in front of radiator of my built 383. My oil Temps will hang out in the 190-200 degree range.. they work good
Reply
Old Feb 13, 2023 | 01:33 PM
  #3  
Nilak's Avatar
Nilak
Thread Starter
Racer
Photogenic
Liked
Loved
Community Favorite
 
Joined: Sep 2021
Posts: 360
Likes: 59
Default

thank you
Actually, I’m swapping it for a new 383, and they come with standard pan that doesn’t have an oil indicator, but since these cars corner well, and will see tracks, I want a pan that is able to supply oil safely in all situations, plus these pans come with 20mm bung for the sensor. The car has the water to oil cooler but I understand it’s not enough. They will mount the pan and install a proper scavenging tube.

I was wondering, can you remove the starter for servicing without removing the front exhaust, having this wide pan?

The 383 engine is rated 420Hp for carburetor setup, but with stock intake I expect it to do about 400lbft or less @5600rpm and I will reduce advance and possibly lean out (I’ll install EGT to see how it reacts) to keep max torque to 400lbft. well see what kind of temperatures it will get to. This engine is designed for mineral oil but I’ve found a semisynthetic designed for old cars that can handle up to 150C (Motul 10w40 eighties).
Reply
Old Feb 13, 2023 | 01:39 PM
  #4  
FostersPerformance's Avatar
FostersPerformance
Melting Slicks
20 Year Member
Liked
Community Favorite
Top Answer: 1
 
Joined: Jul 2003
Posts: 3,495
Likes: 877
From: Saratoga Springs NY
2024 C4 of the Year Finalist - Modified
2022 C4 of the Year Finalist - Modified
Default

Originally Posted by Nilak
thank you
Actually, I’m swapping it for a new 383, and they come with standard pan that doesn’t have an oil indicator, but since these cars corner well, and will see tracks, I want a pan that is able to supply oil safely in all situations, plus these pans come with 20mm bung for the sensor. The car has the water to oil cooler but I understand it’s not enough. They will mount the pan and install a proper scavenging tube.

I was wondering, can you remove the starter for servicing without removing the front exhaust, having this wide pan?

The 383 engine is rated 420Hp for carburetor setup, but with stock intake I expect it to do about 400lbft or less @5600rpm and I will reduce advance and possibly lean out (I’ll install EGT to see how it reacts) to keep max torque to 400lbft. well see what kind of temperatures it will get to. This engine is designed for mineral oil but I’ve found a semisynthetic designed for old cars that can handle up to 150C (Motul 10w40 eighties).
Yup, same reason I used a pan like this as well.

Yup, starter can come right out. I have Full length headers and a gear reduction starter.

And the Canton pan has the drain plug, oil temp sender, low oil level sensor (I dont use that so its plugged), an inspection plug, and a 1/4 npt for a universal dipstick that I use.

I run 10 30 mineral oil..

And also, even though my pan says will clear a stroker crank and it did, make sure to check clearances when you install it.
Reply
Old Feb 13, 2023 | 02:55 PM
  #5  
Nilak's Avatar
Nilak
Thread Starter
Racer
Photogenic
Liked
Loved
Community Favorite
 
Joined: Sep 2021
Posts: 360
Likes: 59
Default

Thank you, I’ll choose the Moroso, seems similar and a bit cheaper
Reply
Old Feb 14, 2023 | 09:20 AM
  #6  
MatthewMiller's Avatar
MatthewMiller
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2015
Posts: 6,090
Likes: 1,972
From: St. Charles MO
Default

For legit road racing or even autocross use, I would recommend the Kevko 1091-RR pan. Canton's don't work all that well and have a bad habit of the baffle flaps sticking and/or breaking. My 396 LT4 (~420rwhp) on 315 Hoosiers front and rear on a road course couldn't uncover the pickup with that pan.
Reply
Old Feb 14, 2023 | 10:08 AM
  #7  
FostersPerformance's Avatar
FostersPerformance
Melting Slicks
20 Year Member
Liked
Community Favorite
Top Answer: 1
 
Joined: Jul 2003
Posts: 3,495
Likes: 877
From: Saratoga Springs NY
2024 C4 of the Year Finalist - Modified
2022 C4 of the Year Finalist - Modified
Default

Originally Posted by MatthewMiller
For legit road racing or even autocross use, I would recommend the Kevko 1091-RR pan. Canton's don't work all that well and have a bad habit of the baffle flaps sticking and/or breaking. My 396 LT4 (~420rwhp) on 315 Hoosiers front and rear on a road course couldn't uncover the pickup with that pan.

I remember in 2017 when I bought the pan and everything else I saw you mention about possible issues with the Canton...was too late to return it. But I did go through it and I did find a questionable weld for one of the doors. I fixed the weld and everything else looked fine.....I would have bought the pan you recommended above but like I said was too late to return mine. No issues so far, but also haven't been to a real track with it. Hope to next year but in my area there are not too many tracks. A customer of mine runs the New York Safety track, but even that is a few hours from me.
Reply
Old Jan 29, 2024 | 05:10 PM
  #8  
Nilak's Avatar
Nilak
Thread Starter
Racer
Photogenic
Liked
Loved
Community Favorite
 
Joined: Sep 2021
Posts: 360
Likes: 59
Default

I have recently managed to install the new engine but the Morosso pan has a clearance issure with the frame. It sits right on top of the two frame braces bolted to the frame that are mounted at about 45 degrees and they are virtually flush with the oil pan. This is probably caused by the fact the new oil pan is taller. I also have new engine mounts, I don't know, maybe they have something to do with it.
Did anyone go through this problem?





Last edited by Nilak; Jan 30, 2024 at 04:48 AM.
Reply

Get notified of new replies

To oilpan

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer




All times are GMT -4. The time now is 11:24 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE