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

C4 frame

Thread Tools
 
Search this Thread
 
Old Jun 24, 2017 | 10:45 PM
  #1  
POLOVETTE 94's Avatar
POLOVETTE 94
Thread Starter
Drifting
25 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
Default C4 frame

Don't recall ever hearing an answer to this...is the C4 frame hollow? I mean, enough so that you could run maybe 3/4" OD hose through it? I know that access holes would probably have to be drilled, as I don't see any openings. Thanks for any answers.
Reply
Old Jun 24, 2017 | 10:51 PM
  #2  
pologreen1's Avatar
pologreen1
Team Owner
15 Year Member
 
Joined: Dec 2007
Posts: 20,974
Likes: 261
Default

I have holes in mine where factory hooks were in back for tie downs, in front of the rear end. It's hollow. If solid the weight would be huge.
Reply
Old Jun 24, 2017 | 11:07 PM
  #3  
POLOVETTE 94's Avatar
POLOVETTE 94
Thread Starter
Drifting
25 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
Default

Originally Posted by pologreen1
I have holes in mine where factory hooks were in back for tie downs, in front of the rear end. It's hollow. If solid the weight would be huge.
I guess maybe I can drill something. I want to run larger diameter hoses for the water to air intercooler setup. I can only fit 5/8" od hose behind the rocker panel covers.
Reply
Old Jun 24, 2017 | 11:23 PM
  #4  
Gibbles's Avatar
Gibbles
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2015
Posts: 1,275
Likes: 165
From: Utah
Default

Its hollow, don't with it imo...
Reply
Old Jun 25, 2017 | 07:27 PM
  #5  
POLOVETTE 94's Avatar
POLOVETTE 94
Thread Starter
Drifting
25 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
Default

Anyone else have any input? I'd rather run a larger hose, and have it "protected" by the frame the whole way, thanks have the smaller one exposed at spots.
Reply
Old Jun 26, 2017 | 05:06 AM
  #6  
WVZR-1's Avatar
WVZR-1
Team Owner
20 Year Member
Veteran: Army
Active Streak: 30 Days
Liked
 
Joined: Sep 2003
Posts: 25,361
Likes: 2,729
Default

There is "air space" but what you're calling frame is actually several dozen sections of HSLA (High Strength Light Alloy) stamped components that have been welded together. You couldn't "fish" anything end to end through it. There's multiple weld-nut protrusions for bolt-on and every mating flange internally would have sharp edges.

Some images that might help.

Name:  C4 frame rails.png
Views: 351
Size:  48.1 KB

Name:  C4 rails assembled.png
Views: 721
Size:  60.7 KB

Name:  C4 frame sections.jpg
Views: 252
Size:  177.8 KB
Reply

Get notified of new replies

To C4 frame





All times are GMT -4. The time now is 05:10 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE