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

Cross utilization? Plenums

Thread Tools
 
Search this Thread
 
Old Sep 20, 2006 | 11:08 PM
  #1  
Iemtall's Avatar
Iemtall
Thread Starter
Heel & Toe
 
Joined: Dec 2005
Posts: 18
Likes: 0
From: Tulsa Oklahoma
Default Cross utilization? Plenums

Was curious if the plenum and runners off a 87 chevy 305 are the same as on a 87 TPI 350 vette? Also, what about the manifold base? Appreciate any input! Thanx!
Reply
Old Sep 20, 2006 | 11:10 PM
  #2  
VetNutJim's Avatar
VetNutJim
Safety Car
 
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Default

Yep.
Reply
Old Sep 20, 2006 | 11:12 PM
  #3  
VetNutJim's Avatar
VetNutJim
Safety Car
 
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Default

Wait!!! I changed my mind!!!



The RUNNERS off the 305 will be MUCH easier to polish up than the cast Corvette runners.
Fuel rails ... DIFFERENT.

Otherwise, samo, samo.
Reply
Old Sep 21, 2006 | 09:29 AM
  #4  
KENS80V's Avatar
KENS80V
Melting Slicks
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Aug 2004
Posts: 2,897
Likes: 227
From: Oakbank Manitoba
Default

Manifold base is different too. Center two mounting bolt holes on either side are drilled at a different angle on the Camaro/Firebird manifold. Also the EGR systems are not compatible. The plenum extensions are different too. Corvettes are aluminum while the other type is plastic.
Reply
Old Sep 23, 2006 | 07:29 PM
  #5  
85C4Man's Avatar
85C4Man
Instructor
 
Joined: Sep 2006
Posts: 106
Likes: 0
From: '85 L98 Coupe Auto Chicago,IL
Default

i was wondering the same thing and with some google searching i found this site http://www.hotrodlane.cc/Streetstories/choosingtpi2.htm it gives great info on the differences
Reply

Get notified of new replies

To Cross utilization? Plenums





All times are GMT -4. The time now is 04:41 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE