Wasn't sure if this was the right forum to post this in, but hopefully you guys can help with this, as you have in the past.

My '79 3 speed auto 350 L-48 just recently had a new carb (Edelbrock) put on it. In the warm months I had absolutely no problems with it, but now it's getting cold (lower to mid 40's). Since I've been starting it in the cold weather I have noticed that when I first start out she has a tendency to bog down when she shifts into second gear. It's almost a hesitation at the gear change, then like she's getting no gas with a sudden surge that makes her sputter and sound just awful!

After she warms up she's fine, and shifts normally. Is this something to do with a cold weather mix that isn't adjusted correctly? Or do I just have to let her warm up longer before I take her out on the road? Should I take her back to the guy that installed the carb and have him re-adjust her for the cold? But then will I have to have her re-adjusted again when warm weather hits?

Thanks again guys and gals,

The cold air is giving you a denser air charge, thus giving you a leaner mixture. I would guess that you need to fatten up your secondaries or make them dump slower. (I'm not sure how to do that on an Edelbrock.)