C3 - 454 Engine - Need help!
Thread Starter
Racer
Joined: Apr 2022
Posts: 315
Likes: 132
C3 - 454 Engine - Need help!
Hi all - I have a friend who bought a older Corvette with a 454. So, when they bought it - it ran for about a day - now, it does not run.
They took a few short videos showing several hoses and wires that are not connected and they don't know what they are for.
I don't know if there are common issues with this engine (fuel filter, carb problem, etc.) that the problem could be.
I would really appreciate any info at all on the hoses and wires in the video and what they are for.
Thanks much!!
They took a few short videos showing several hoses and wires that are not connected and they don't know what they are for.
I don't know if there are common issues with this engine (fuel filter, carb problem, etc.) that the problem could be.
I would really appreciate any info at all on the hoses and wires in the video and what they are for.
Thanks much!!
Last edited by CamALot; Jan 14, 2023 at 03:32 PM.
Burning Brakes
Joined: Dec 2017
Posts: 1,043
Likes: 414
2023 C3 of the Year Finalist - Modified
1st one looks like overflow hose for the radiator.
3rd looks like a ground, mine is attached to the mounting bracket on the alternator
6th is a breather for the valve cover
7th is the power steering pump
also, with the engine off, all the oil will drain out of the valve train underneath the valve cover, leaving just a film. As long as the oil is at the correct level on the dipstick, the engine has enough oil.
3rd looks like a ground, mine is attached to the mounting bracket on the alternator
6th is a breather for the valve cover
7th is the power steering pump
also, with the engine off, all the oil will drain out of the valve train underneath the valve cover, leaving just a film. As long as the oil is at the correct level on the dipstick, the engine has enough oil.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,130
Likes: 4,243
From: US-PNW
2nd vid is the washer fluid feed from the tank to the pump. Look under the driver's fender for the tank or on the firewall under the driver's fender for a vinyl bag if the car originally came with A/C.
#5: Might be a plunger switch be for the hood alarm... Looks like a bracket with hole just below your pinky. Doesn't look like the factory switch but might be an auto parts store replacement.
#5: Might be a plunger switch be for the hood alarm... Looks like a bracket with hole just below your pinky. Doesn't look like the factory switch but might be an auto parts store replacement.
Burning Brakes
Joined: Jan 2003
Posts: 961
Likes: 275
From: Frederick MD
Hi all - I have a friend who bought a older Corvette with a 454. So, when they bought it - it ran for about a day - now, it does not run.
They took a few short videos showing several hoses and wires that are not connected and they don't know what they are for.
I don't know if there are common issues with this engine (fuel filter, carb problem, etc.) that the problem could be.
I would really appreciate any info at all on the hoses and wires in the video and what they are for.
Thanks much!!
They took a few short videos showing several hoses and wires that are not connected and they don't know what they are for.
I don't know if there are common issues with this engine (fuel filter, carb problem, etc.) that the problem could be.
I would really appreciate any info at all on the hoses and wires in the video and what they are for.
Thanks much!!
So this is a Holley 4150 carbed engine. Not the OE carb by a long shot. While not OE they are pretty troublefree and i doubt is the source of your problem. If it has fuel, spark, and compression all at the proper time it will run. Does it have spark? Is it getting fuel?
I saw in the one video it has a vacuum advance distributor but its plugged off. I suspect given the valve covers and everything else being out of a summit catalog that this is a Gen V swap. Your common issue here is your dealing with a 40-50 year old car that somebody has extensively modified. While I’m not saying these things were done wrong, the lack of being tidy makes me suspect. You need to figure out exactly what you have going on there. And educate yourself on how these various systems should work. Things might be fine as they are or the damned thing might be dangerous.
