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

Fuel pump replacement

Thread Tools
 
Search this Thread
 
Old Sep 30, 2019 | 07:19 PM
  #1  
qball's Avatar
qball
Thread Starter
Burning Brakes
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2002
Posts: 1,140
Likes: 96
From: Naples
Default Fuel pump replacement

When changing out the fuel pump do you have to drain the tank, or will just the fuel in the pump itself drain out?

Thanks, 🍻
Reply
Old Sep 30, 2019 | 08:31 PM
  #2  
blue427's Avatar
blue427
Burning Brakes
20 Year Member
Active Streak: 30 Days
Liked
Loved
 
Joined: Dec 2003
Posts: 1,147
Likes: 151
Default

When I change my fuel pump(427) I just pull the rubber hose off the pump and put a 3/8 bolt in it with a couple clamps,you might havea 5/16 line with a 350. put a pan under the pump to catch any gas from the pump.
Reply
Old Oct 1, 2019 | 06:26 AM
  #3  
Rescue Rogers's Avatar
Rescue Rogers
Is my vette stock?? HAHA
Supporting Lifetime Gold
Veteran: Navy
10 Year Member
Community Builder
Loved
 
Joined: Oct 2015
Posts: 20,036
Likes: 9,158
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Default

I use clamps on the rubber line beffore I pull it off. And yes you will get fuel draining back down the line from the carb and what little is on the pump side of the rubber line you clamp. If you do not, the tank level is higher than the pump and you will get all the fuel draining out of the tank onto you.

Dont forget there is your pump cam rod that is up in the engine that wills slide out when you pull the pump. some people like to pull it and cover it with grease to hole it back up in there during reassembly. I like to use the retaining bolt on the front of the engine but yo need to write a note and tape it to the steering wheel so you remember to remove it and replace the short plug bolt

The hardest part for me was getting the pump out past the motor mount and the front frame member. Good luck
Reply
Old Oct 1, 2019 | 07:45 AM
  #4  
Jebbysan's Avatar
Jebbysan
Dr. Detroit
Supporting Member
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2012
Posts: 10,090
Likes: 4,015
From: New Braunfels Texas
Default

Just be quick and pop a large vacuum cap on the end of the supply line

Jebby
Reply
Old Oct 1, 2019 | 07:48 AM
  #5  
qball's Avatar
qball
Thread Starter
Burning Brakes
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2002
Posts: 1,140
Likes: 96
From: Naples
Default

Thanks Guys I figured the fuel would continue to flow from the tank, I’ll clamp or plug the line.
Just didn’t wanted to be surprised when I was under there. ����
Reply
Old Oct 1, 2019 | 09:50 AM
  #6  
Peterbuilt's Avatar
Peterbuilt
Le Mans Master
15 Year Member
 
Joined: Aug 2006
Posts: 7,411
Likes: 1,550
From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Default

You will find it easier to reinstall the fuel pump with the rod resting on the heal of the cam, so check that the distributor rotor is pointing to number one on the cap or align the timing marks to '0' on the compression stroke.
Reply

Get notified of new replies

To Fuel pump replacement





All times are GMT -4. The time now is 06:24 PM.

story-0
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-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
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-3
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
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE