Carb Spacers, Are They A Good Idea?

[skull]

it should not make much of a difference if the intake is a dual plane, fuel still goes thru the manifold pretty much in the same way with the spacer moving the carb up, l think it looks cool with the spacer.

Later

[05snopro440]

We usually use a 1/2" or 1" phenolic spacer under a heat shield to reduce heat transfer to the carb, then put the carb on top. I don't think that 2" spacer will help drivability but it might not make a big noticeable difference.

[sgtpontiac]

See.... It's true.... Size doesn't matter...

[BlueNorther]

if it is a 4 hole spacer, you might gain a few lbs-ft of low end torque, if it is 1 big square hole it will kill a s___t load of low rpm torque but may give you a little higher top rpm.

the only reason to run a 2" 1 hole spacer is if you are class restricted to a very small cfm carb, the big open plenum will act as a reservoir of fuel mixture so there is less restriction for each cylinder to draw from. this is why you don't see them on the street.