Edelbrock 1406 on 318 jetting

[65barracudaLA]

I finally swapped the 318 into my '65 Barracuda. I have an Edelbrock 1406 carb that I have taken apart and cleaned and blew air through everything. I have rebuilt Carter BBDs before, but never changed anything on them and my knowledge of carbs is very limited. Before I put it back together I want to know what jets to put in. I have the Edelbrock calibration kit. It seems like metering rods and springs are easy to change out, but changing the jets is a bit more involved - once it's in the car. I prefer fuel economy over power, because it's a daily driver, but I also don't want to unnecessarily leave power on the table.

Here are the specs:
-1965 Barracuda
-console/ cable shifted A904
-7-1/4 sure grip with 2.73 gears
-stock exhaust manifolds, dual TTi exhaust, 2.5" diameter ea., H-pipe, Dynomax Super Turbo Mufflers
-stock 1969 LA 318 bottom end, 163 heads (bought it that way), Edelbrock Performer 318/360 intake, electronic ignition.

I have heard that the 600cfm carb is too big for the engine and that it would run too rich. Putting smaller jets in there should help, right? Could using the smallest jets in the kit make it run too lean? As far as I know it comes stock with the 0.98" jets and the smallest jet in the kit is 0.95". So I guess the question is: Does anything speak against putting in the 0.95" jets?

 

[RustyRatRod]

I'd run it box stock. It should be REAL close.

 

[318willrun]

There is no way for somebody to say "run this jet" and you are good. For the ultimate tune, the engine will have to be tuned according to the engine demands. Other than that, it's pin the tail on the Donkey, you may get lucky and hit the target but probably not. In your case, I agree with RRR and would START with the stock jetting.

 

[65barracudaLA]

Ok sounds good

 

[66fyssh]

The 1406 is designed from the factory for more fuel economy whereas the 1405 is designed for more performance.

 

[75slant6]

Trouble Tuning the Edelbrock Performer 1406 Carb? Read On...

Here’s what I plan to do with the 1406 on my 5.9 magnum. I’m going to either get the jets to match the 1406 factory setting, or buy a 1405 kit and set it to the #8 tune and then adjust accordingly from there.

 

[George Jets]

Bolt it on and go.

No special tune required.
Run nice on original settings.

 

[Darter6]

The stock 1406 is a good starting point.Do not go too lean to gain fuel economy.You may end up with poor driveability.
Density Altitude Plays a major roll in jetting . What works at sea level may not be the best at 3,000 ft above or more.
Edelbrock web site has a good scale and diagram for proper jetting.

 

[Bewy]

Don't forget to set the float level to 7/16".

 

[65barracudaLA]

Rebuilt to stock specs! Thanks for your input!

 

[RustyRatRod]

Rebuilt to stock specs! Thanks for your input!

View attachment 1715956008

That looks great!

 

[Confusedoldman]

These carbs were built from Carter AFB specs since Edelbrock bought the rights. Very easy to work on and easy to tune.

 

[Bewy]

Correct: very easy to work on & easy to tune.
Incorrect: Built from Carter specs; there were many changes. There were 505 versions of the original AFB.