This kit is absolutely necessary to tune a stock 1406 carburetor for any other engine than the smog 305 that it would have originally come on. I have two such applications and both are 350's. One a stock reman; the other a custom performance engine that I built. Interestingly, the best set up for both thus far (I used an air/fuel gauge to determine this) is the stock jets with orange springs and .70x.37 rods. This does make it a bit rich at the top end of 4th, but it's great everywhere else. There is something to said about potentially using the 1405 tuning kit to do the same job. The carburetors are identical internally, and the 1405 kit it larger and allows several steps richer on both cruise and power than the 1405. Of note, the 1406 stock calibration is about 3 stages leaner in power and 2 leaner in cruise than the stock calibration of a 1405Read full review
Verified purchase: Yes | Condition: New
Very nice carburetor tuning kit. I cleaned the carb thoroughly but continued to have stuttering and rough idle. I replaced the primary jets and fuel rods. Now the car runs like it should. The parts were high quality, made in the US, not China. Good price, fast shipping.
Verified purchase: Yes | Condition: Pre-owned
The kit had the rods and jets I needed. I liked that they were marked with the sizes like the OEM parts. Only need to go down one size in rods, but I noticed a damaged spring and the kit had 2 replacements.
Verified purchase: Yes | Condition: Pre-owned
Replaced original Carter AFB with Edelbrock 1406 600 cfm carburetor and it idled way too rich. I was able to use metering rods and jets out of this kit to calibrate to 1 stage lean,and fuel economy is up and runs better at idle. This kit is the same as Edelbrock except it is 10 to 15 dollars cheaper.
Verified purchase: Yes | Condition: New
Worked great for carb tuning the camaro. Seems to be of good quality.
Verified purchase: Yes | Condition: New
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