C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

a conundrum

Thread Tools
 
Search this Thread
 
Old May 17, 2006 | 11:05 PM
  #21  
68 NJConv 454's Avatar
68 NJConv 454
Melting Slicks
 
Joined: Jan 2006
Posts: 3,028
Likes: 2
From: North NJ
Default

Norval tested some spark plug extenders with an adjustable angle at the end...maybe those would do the trick to avoid hitting the headers.
http://forums.corvetteforum.com/show....php?t=1374813
Make sure your current won't jump from the plug wires to the header. Good luck
Reply
Old May 17, 2006 | 11:20 PM
  #22  
84rzv500r's Avatar
84rzv500r
Drifting
15 Year Member
 
Joined: Oct 2003
Posts: 1,486
Likes: 10
From: Big Pine Key FL
Default

Originally Posted by Guru_4_hire
I am learning towards a header flange and 2 sets of header gaskets.
maybe... Flip them over so they point up weld a short stainless 90 and the turbo flange to the collector and wala...

A 4 inch hole saw and dump the exhaust through the hood. Let them turbo's peak out a little. with a totally stock looking body. It will scare the SH*T out of the ricers. A N20 bottle and a purge nozzle, just for show
Reply
Old May 18, 2006 | 12:08 AM
  #23  
Ak. Mal's Avatar
Ak. Mal
Race Director
10 Year Member
 
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Default

Sorry to stray off topic, but are those stock C4 exhaust manifolds with A.I.R. tubes? If so, what year C4s can those be found on?
Reply
Old May 18, 2006 | 07:02 AM
  #24  
Guru_4_hire's Avatar
Guru_4_hire
Thread Starter
Team Owner
15 Year Member
 
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Default

The earlier 80s because the later 80s went to the D shaped port 85-87 I believe
Reply
Old May 18, 2006 | 11:16 AM
  #25  
kb2fzq's Avatar
kb2fzq
Burning Brakes
 
Joined: Aug 2005
Posts: 1,126
Likes: 0
From: Hudson Falls, N.Y. 76 Vette Modified L-48
Default

Just ONE plug is this way?
How could that be??
Very strange....very strange...
...and I thought I had problems in my life
Reply
Old May 18, 2006 | 03:59 PM
  #26  
Guru_4_hire's Avatar
Guru_4_hire
Thread Starter
Team Owner
15 Year Member
 
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Default

the 4 center plugs right now. I havent really checked the others.
Reply
Old May 18, 2006 | 04:09 PM
  #27  
Guru_4_hire's Avatar
Guru_4_hire
Thread Starter
Team Owner
15 Year Member
 
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Default

Can someone with a 12" ruler measure the distance from the heads to the steering mechanism, and from the exhaust down to the motor mount.
Reply
Old May 18, 2006 | 04:34 PM
  #28  
69autoXr's Avatar
69autoXr
Melting Slicks
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
Default

Originally Posted by Guru_4_hire
The earlier 80s because the later 80s went to the D shaped port 85-87 I believe
Later C4's (86+) had angle plug heads, so what you really need are manifolds off a later car. If that is you are bound and determined to use C4 manifolds.

Are those heads not D-ports?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

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

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old May 18, 2006 | 05:05 PM
  #29  
82Vette'ster's Avatar
82Vette'ster
Pro
20 Year Member
All Eyes On Me
 
Joined: Sep 2003
Posts: 511
Likes: 4
From: Phoenix AZ
Default

Originally Posted by Guru_4_hire
....distance from the heads to the steering mechanism, and from the exhaust down to the motor mount....
If the other clearances will let you, you could machine the flange at an angle to make the bottom kick out. That with short plugs, a little dent, and a band of header wrap to protect the boot. Might work.
Reply
Old May 18, 2006 | 06:55 PM
  #30  
Guru_4_hire's Avatar
Guru_4_hire
Thread Starter
Team Owner
15 Year Member
 
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Default

These are for angle plug heads. Early L98s had square port exhaust ports, later heads have the D-port
Reply
Old May 18, 2006 | 06:56 PM
  #31  
Guru_4_hire's Avatar
Guru_4_hire
Thread Starter
Team Owner
15 Year Member
 
Joined: Apr 2002
Posts: 62,198
Likes: 1
From: All humans are vermin in the eyes of Guru VA
Cruise-In IV Veteran
Cruise-In V Veteran
Default

Originally Posted by 82Vette'ster
If the other clearances will let you, you could machine the flange at an angle to make the bottom kick out. That with short plugs, a little dent, and a band of header wrap to protect the boot. Might work.
I thought about it and you wouldnt be able to get the bolt holes to line up.
Reply




All times are GMT -4. The time now is 06:57 PM.

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