C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

C3 question

Thread Tools
 
Search this Thread
 
Old Apr 11, 2018 | 06:43 PM
  #1  
Joe C3's Avatar
Joe C3
Thread Starter
Cruising
 
Joined: Aug 2017
Posts: 12
Likes: 0
From: Evans City PA
Default C3 question

Hello,
Does anyone know if I would have clearance issues by using a long water pump on my 1977 Vette? I would be replacing the clutch fan and replacing it with a non-clutch flex fan. I have the serpentine pulleys for my accessories but didn’t want to risk it if it won’t fit. The body is currently off of the frame and will be put back on in a couple weeks. Any help is greatly appreciated!
thanks in advance!
Reply
Old Apr 11, 2018 | 07:15 PM
  #2  
M A Fry's Avatar
M A Fry
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2009
Posts: 1,037
Likes: 103
From: Brisbane Queensland
Default

I can't help you with the water pump question, but you need to watch engine masters
episode 20 on their engine fan comparison, it may change your mind about using a flex fan.

Mark
Reply
Old Apr 11, 2018 | 07:53 PM
  #3  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 53,988
Likes: 9,355
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

every other Chevy car at the time used a long pump. do you think if it would fit GM would have used it to save money. keep the short pump.
Reply
Old Apr 11, 2018 | 08:08 PM
  #4  
John 65's Avatar
John 65
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,380
Likes: 415
From: N J
Default

I think the long pump would put the fan to far forward into the shroud and not cool as well.

If you were going with electric fans, that's another story.
Reply
Old Apr 12, 2018 | 07:00 AM
  #5  
terrys6t8roadster's Avatar
terrys6t8roadster
Melting Slicks
10 Year Member
 
Joined: May 2012
Posts: 2,192
Likes: 343
From: Allenton Wisconsin
Default

Are you getting the hint; 'drop the flex fan idea'. Welcome to the C3 forum. Electric fans are a good idea and a long pump can be used then. But to answer your original question, the long w/p and a flex fan is pretty close in length as compared to a clutch fan and short pump. Clearance is always an issue with corvettes, but there is a specific distance that the fan needs to be inside fan schroud, and so much left out for proper cooling. T
PS: flex fans make your running engine sound like a turbine.
Reply
Old Apr 12, 2018 | 07:52 AM
  #6  
69Vett's Avatar
69Vett
Safety Car
15 Year Member
 
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
Default

wrong pump, short pump on Corvette.
long pump will create several issues.
Reply
Old Apr 12, 2018 | 08:02 PM
  #7  
Joe C3's Avatar
Joe C3
Thread Starter
Cruising
 
Joined: Aug 2017
Posts: 12
Likes: 0
From: Evans City PA
Default

Thanks everyone for the replies! I was looking at a C3 today and it definitely looks like clearance will not be an issue. However, maybe I will no go the flex fan route and use a non flex.

Joe
Reply
Old Apr 12, 2018 | 08:17 PM
  #8  
Nowhere Man's Avatar
Nowhere Man
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2003
Posts: 53,988
Likes: 9,355
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
Default

Originally Posted by Joe C3
Thanks everyone for the replies! I was looking at a C3 today and it definitely looks like clearance will not be an issue. However, maybe I will no go the flex fan route and use a non flex.

Joe
either use clutch blade fan or electric fans. and take a lesson from car manufactures. that is all they use. never have they used flex fans

Last edited by Nowhere Man; Apr 12, 2018 at 08:17 PM.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Apr 12, 2018 | 08:28 PM
  #9  
Joe C3's Avatar
Joe C3
Thread Starter
Cruising
 
Joined: Aug 2017
Posts: 12
Likes: 0
From: Evans City PA
Default

​​​​​​​




Reply
Old Apr 12, 2018 | 08:29 PM
  #10  
Joe C3's Avatar
Joe C3
Thread Starter
Cruising
 
Joined: Aug 2017
Posts: 12
Likes: 0
From: Evans City PA
Default Here are some pics






Reply
Old Apr 12, 2018 | 09:02 PM
  #11  
John 65's Avatar
John 65
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2003
Posts: 5,380
Likes: 415
From: N J
Default

Car is looking good. That's a pretty blue. Nice job!
Reply
Old Apr 12, 2018 | 09:06 PM
  #12  
Joe C3's Avatar
Joe C3
Thread Starter
Cruising
 
Joined: Aug 2017
Posts: 12
Likes: 0
From: Evans City PA
Default

Originally Posted by John 65
Car is looking good. That's a pretty blue. Nice job!
thanks John! The body is off and ready to go back on. It had a bad frame so I got another one and built it this winter. May 1st the body will go back on! I can’t wait!
Reply

Get notified of new replies

To C3 question





All times are GMT -4. The time now is 08:50 PM.

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