MISTERZ06

use a heat shield under your carb and it will keep it cooler
GM used to make them -i think they have been discontinued
they are available aftermarket or NOS
for SB & BB

they are available for Quadra-Jet and Holley carbs

....................... tom
https://www.summitracing.com/parts/hly-108-70/overview/

http://www.ebay.com/itm/ROCHESTER-QU...NXn9rW&vxp=mtr

http://www.ebay.com/itm/1964-1972-GM...tY7X9k&vxp=mtr

http://www.ebay.com/itm/1964-1972-GM...BYRyjm&vxp=mtr

http://www.ebay.com/itm/1967-75-GM-A...1XT24Q&vxp=mtr

jr73

Getting intake gaskets with heat riser block off to help keep it cooler as well. I think heat under the carburetor is not needed in a warm weather only car anyway.

BBCorv70

Were you having any heat related issues with your carburetor?

Alan 71

Hi,
I believe the shield was used under the carburetor on engines in cars to be delivered in California during the 1970 model year. (?)
Regards,
Alan

MISTERZ06

i did not have any heat related issues, but from my drag racing experiences i want to keep as much heat as possible from the carb

and i think it looks cool

........................................ ..... tom

MISTERZ06

Good article/read about Heat-Soak - and how it effects your carburetor
with the new fuels and when your car sits after reaching operating temps and hot weather, your Corvette might be a little hard to start

........................... tom

http://www.edelblog.com/tech-tips/resolving-heat-soak

RJ1AZ

Wouldn't a thick carb gasket accomplish the same thing? Isolating the metal of the carb from the metal of the intake would prevent heat transfer. That looks like a piece of aluminum. And to quote your post..."GM used to make them". Got to be a reason they don't any more.

That being said, I think airflow in the engine compartment would be most important. I mean, if you put your carb in the oven and set it on 450 degrees, it's going to BAKE. Leave the oven door open and point a fan at it, and it'll just toast a little.

Just asking. I'm no expert.

ddawson

The plate is a kind of tin metal. It deflects the heat away from the bowl/bowls.

The shield also includes a small 1/4" spacer.

I used this along with a 3/4" laminate 4 hole spacer.

69Vett

an Insulator will work just fine without the sheild,
shield will help more, but they do get in the way.
just installing a 1/4" gasket/insulator stops the block heat from transfering into the carb.
dropping the temperature of the carb. almost 100 degrees.
I measured temp. before and after, after adding an insulator to the carb.
my carb. had cold condensation on the outside after warmup and running.
It literally was colder that outside tempature, just by adding the insulator.
This testing was completed by also blocking the exhaust cross over ports under the carb..
It is a must have item in warm geographical areas.

jim2527

Wrap your fuel line with insulation.

Iceaxe

There is a good chance the fuel is boiling in your fuel line. When you encounter the hard start issue grab your fuel line and see how hot it is.

Anyhoo.... I solved my hard start issue be insulating the fuel line with Heat Shield Products Fire Armor 210040 Sleeve. It will cost you under $20.

I also found that using ethanol free gas helps with the issue. You can install the free app "Pure Gas" on your smart phone to find who near you sells ethanol free gas.

sunflower 1972

No, they have NOT been discontinued by GM. The part number has been superceded 3 times, but they are available to order from any GM dealer parts department. Part #10069984. May take a few days since the only GM parts warehouse that has them is Memphis. Here's a link that shows the carb insulator/gasket: https://www.summitracing.com/parts/ado-216-82
By the way, I do indeed have one on my Vette.

sunflower 1972

FWIW, I DO know that when whatever inventory they have in Memphis is exhausted, they will not be making anymore. So, get'em while you can.