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

Just checking

Thread Tools
 
Search this Thread
 
Old Feb 25, 2006 | 12:59 AM
  #1  
Performance nut's Avatar
Performance nut
Thread Starter
Le Mans Master
Veteran: Navy
20 Year Member
All Eyes On Me
Photogenic
 
Joined: Jun 2005
Posts: 5,037
Likes: 520
From: Texas
Default Just checking

Trying to get factory exhaust manifolds for my car. Anyone know if there is any difference in exhaust manifolds from 85-91 (emissions placement, size, material, etc.)? I some how doubt it but then again you never know.
Reply
Old Feb 25, 2006 | 03:02 AM
  #2  
Demonic85's Avatar
Demonic85
Team Owner
 
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
Default

I'm pretty sure '85-'91 intake manifolds are all identical. The only difference in exhaust is everything behind it. The pipes after the manifolds are '84-'85 = 2 1/4" and '86-'91 = 2 1/2".
Reply
Old Feb 25, 2006 | 04:04 PM
  #3  
CFI-EFI's Avatar
CFI-EFI
Race Director
10 Year Member
 
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Default

The 1985 doesn't have the exhaust supply tube for the EGR that the 1986 and up have. Part number wise, the 1986, right side is a loner. My guess is that is because of a difference in the way the EGR exhaust tube connects. The 1986 through 1989 left sides are the same, as are the 1987 through 1989 right sides.

RACE ON!!!

PS. Hey! Central Coaster. I'm ASSUMING something here. Come and berate me.
Reply

Get notified of new replies

To Just checking





All times are GMT -4. The time now is 06:00 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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