The kits are designed to work with the calibration chart. There may be similar sized rods and jets in the two kits but you will have to check the chart to be sure. I would suggest downloading an owners manual and go from there.

According to my owners manual, the (1405/1406) are the same except for the Primary main jet, (.100/.098), Metering rod (.070x.047/.075x.047) and the Step-up spring (orange 5"/yellow4"). Both use a .095 Secondary jet.

Just from glacing at the 2 reference charts, they share many of the same metering rods so you may get by with only needing to buy 1 or 2 rod sets, depending on how radical your changes are. I'd go with the stock calibration first because Edelbrock claims in their Tech section that the carbs are set-up for ecomomy out-of-the-box.

That would be;
.100 main jets
.095 secondary jets
.070x.047 #1451 metering rods (also can be marked #695)
orange 5" step-up springs

good luck!

 

As I recall the only real difference between the 1405 and 1406 is the 05 has a manual choke, while the 06 has an electric choke. Then tuning kit should work precisely the same on both.

I don't have any specific tuning advice though.

 

Edelbrock says on their website thate the 1405 is calibrated for performance and the 1406 for feul economy.

 

Even the 1400 stuff will work fine....

Jim

 

The parts will fit. The real key to tuning for either performance or economy is to use the calibration chart in the manual for your model. Eddelbrock spent a lot of timing figure these out. They show you the right combinations of rods and jets.

As already mentioned the out-of-box calibrations are pretty close. It may be possible to go one or two stages leaner, but the engine may not respond well. Yes, the parts will fit and the car will start, but you may have flat spots in driveability. The only way to know is to rty in little steps.

Another key to economy is to have plenty of engine timing.

 

The parts are entirely interchangeable and yes the 1406 is electric choke calibrated leaner while the 1405 is manual choke and calibrated richer.

Yes you can use the 1406 charts on the 1405.

Even better you can create your own charts. What really matters is the jet area that gas must pass through. That area is the area of the jet MINUS the area of the rod. Make a spreadsheet with any/all rods and jets and have it calculate the effective jet areas for you. Then you can mix and match to your hearts content. I built a chart for every rod and jet they sell giving me lots of ways to get the same or slightly different answer.

Tuning will be much easier with a wide band O2 sensor in the system. You can get the cruise up to a 16-17 AFR depending on engine and conditions. The thing that will catch you up is that the carb will lean as vacuum drops and richen up as vacuum increases. This unfortunately is exactly reverse of what you need. With a vacuum gauge and wide band you can watch it lean out until the rods pop to the power step where it richens out again. There is a reference in the Edelbrock Manual that an occaisional stumble may be tuned out using stiffer springs, this is to make that step jump earlier in the leaning ramp.