I am new to owning a Vette, got it last weekend. But my gas perculates. My hood has a raised center with stamps already in the side of the raised sections. I need to cut these out to allow for the heat to escape the engine cabin. But, I have no idea how to do this, what to use, and how to fill them so dust doesn't enter. Can some one please help? I looked on youtube but couldn't find anything. Or at least not something that seemed right. I really don't want to mess this up but I want my new beauty to run better and be more stable. Thanks in advance.

 

You may just need a carb spacer such as this. Make sure your get the correct one for your carb and that you can still get the hood closed after it is installed:
http://www.summitracing.com/parts/sum-g1412/overview/

 

Or, less invasive, simply cover the fuel lines with a heat shield. Lots of wrap type stuff out there.. even thin header wrap or aluminum foil will work. We need to know year/engine/carburetor... more information the better. How do you know the fuel is percolating?

 

does your fuel pump have a return line?

 

I am assuming you have an aftermarket hood since no stock hoods had louvers. I am also assuming your hood is fiberglass. You can use a sabre or jig saw to open the louvers. If you have an cleaner in place, you do not need to worry about dust entering the louvers. C3s are low air pressure over the hood everywhere except the base of the windshield.

 

Thank you all for all the help. I have bought a Phenolic Spacer from Holley carbs, I have a 670 Street Devastator 4 Barrel. The engine is a 350 with Edelbrock performer intake, Taylor 409 wires, MSC Distributor and ignition blaster. Hooker headers with the special couting connected to straight pipes to 4 Chrome tipped exhaust pipes with baffles in the tips. All this came with the car and while I know it is really good I am not sure what it all means. I am putting the spacer on very soon but thought the louvers were a great idea to keep cabin temp down.

 

Thank you all for all the help. I have bought a Phenolic Spacer from Holley carbs, I have a 670 Street Devastator 4 Barrel. The engine is a 350 with Edelbrock performer intake, Taylor 409 wires, MSC Distributor and ignition blaster. Hooker headers with the special coating connected to straight pipes to 4 Chrome tipped exhaust pipes with baffles in the tips. All this came with the car and while I know it is really good I am not sure what it all means. I am putting the spacer on very soon but thought the louvers were a great idea to keep cabin temp down. I don't know if the fuel pump has a return line.


I was thinking about header wrap but just found out I would have to take off headers to do it and that is just beyond my abilities. They have thermal tape for fuel lines? That sounds like a great idea too. Little things I can do ha ha ha.

 

did you check this yet?

 

Sorry for the delay but it took me a while to find out. And according to my neighbor I don't have return lines.

 

this is not my thread but i read information that i also need help. fuel return line

hi? i have a 82 corvette with a edelbrock carburator. no more fuel injection stuff. i have a return line and gas runs out of it while driving and even sometime while it park.

how can i fix this issue.

it has two gas lines. one of the gas line is attach to a fuel pump that is attached/mounted to the bottom of the 350 small block and the other line just laying there with an open outlet .

thank you for your help

 

It is hard to say without pictures or more information. The 82 originally had an electric pump in the fuel tank, and both sound like things have been changed in the last 30 or 40 years.

If you follow the fuel line backwards from the carburetor to the fuel tank, and you only have one line - you probably dont have a return. If it leads to the lower front passenger side of the engine and to a mechanical pump mounted to the block, check how many hoses are connected. If there is a return on the mechanical pump, you will have three lines. One larger one coming from the tank (supply), one smaller one (return) going back to the tank, and one going up to the carb. It could also have a fuel pressure regulator somewhere with a built in return - but who knows without being able to see.

Percolation (boiling) of the fuel in the carburetor, may be helped by heat isolating spacers and/or heat shield, and return lines. There are also exhaust passages in the bottom of some intake manifolds that tend to heat things and can be blocked off. Today's fuels can have lower boiling points, and seem to be more of a problem now.
Good Luck