The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Help - which of these three Q-jet base gaskets is correct for my 72 350?

68Gold/white · 05-31-2014, 02:57 PM

Are you using a stock dual plane intake???

There's many carb base gaskets. Some open in center, some not.

It can be better to use a base gasket that seperates each side of the intake. This allows better low speed pull on each side of the primary side of the carb. Resulting in better off idle power, AND better MPG...possibly. A Base gasket for a 1984 Chevy pickup (IF I remember...)would fit the bill, IF you wanted to go that direction...

05-31-2014, 02:57 PM	#4
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,448	Re: Help - which of these three Q-jet base gaskets is correct for my 72 350? Are you using a stock dual plane intake??? There's many carb base gaskets. Some open in center, some not. It can be better to use a base gasket that seperates each side of the intake. This allows better low speed pull on each side of the primary side of the carb. Resulting in better off idle power, AND better MPG...possibly. A Base gasket for a 1984 Chevy pickup (IF I remember...)would fit the bill, IF you wanted to go that direction...