Heat riser/ choke question

BigBlockMopar28 said
When I changed my 318 from the stock 2bbl and intake to the 4bbl 340 intake, I used the intake gasket that blocked off the heat riser for whatever reason. Saw a fb discussion about heat risers and up to this point I had no idea it was used for the choke and fast idle on it, ever since then the electric choke wants to stay in fast idle for a very long time, even on startup after being driven. That being said, is there a way to adjust fast idle and when it returns to regular idle without the use of the heat riser? Carb is a 600 holley street warrior vacuum, first carb i've owned with an electric choke minus the stock 2bbl. TIA

toolmanmike said
As far as I have seen the electric chokes on carbs nowdays can be adjusted by loosening the cover screws and turning the cover to richen or lean. The covers are usually marked. The electric choke works independently of the heat riser and crossover and you should be able to adjust it to get satisfactory results. I wouldn't adjust it any more than a notch or two at a time.

TMM is correct, just adjust the electric choke on the carb so it will open properly... I had a 318 with a Holley 600 vac secondary with electric choke and drove it daily in below zero weather...

Once the electric choke is adjusted properly, just pump the gas twice, turn the key to start it, watch the oil pressure go to start cold pressure, then put it in gear and drive away with no stumbles... even below 20° F, it still would not stumble in gear after a fresh cold start...