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

Question about Headers / Vortec Heads.

Thread Tools
 
Search this Thread
 
Old May 3, 2017 | 05:16 PM
  #1  
confab's Avatar
confab
Thread Starter
Melting Slicks
 
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Default Question about Headers / Vortec Heads.

Car is an 85, Auto. Vortec cylinder heads.

Been eyeing some of the headers in the used section. Also the OBX brand, new.

Does anyone happen to know which brands will fit an L98 W Vortecs without creating spark plug clearance issues?
Reply
Old May 6, 2017 | 04:13 PM
  #2  
confab's Avatar
confab
Thread Starter
Melting Slicks
 
Joined: Nov 2013
Posts: 3,451
Likes: 336
From: Greater Cincinnati Area.
Default

Would LT1 headers be shaped any better?
Reply
Old May 7, 2017 | 11:55 AM
  #3  
RWDsmoke's Avatar
RWDsmoke
Drifting
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Jan 2005
Posts: 1,354
Likes: 325
From: San Antonio Tx
Default

Originally Posted by confab
Would LT1 headers be shaped any better?
Lt1 headers don't fit vortec ports well and do not clear the early c4 steering shaft.

I had l98 headmans on my 86 with vortec heads and they fit fine. When I swapped the heads for GM fastburns which use lt1 exhaust ports and gaskets I had to do some welding and grinding to fit the ports. After I bought the lt1 OBX headers which fit the ports I had to change the steering intermediate shaft to the lt1 shaft to clear the headers.
Reply

Get notified of new replies

To Question about Headers / Vortec Heads.





All times are GMT -4. The time now is 11:59 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


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