An AFR gauge and Thumpers cell phone number and a pile of small drill bits...

I tinkered a lot with my 1250, and got ok street manners out of it. But with such a big carb, I found I had to tune it for engine at full temp and hot days. which gave it bad manners on cooler days until the engine was at full temp. Mine was on a 605 Hemi and those are big hemi chambers. I find my little 512 wedge a lot less susceptible to AFR changes my 605 puts the carb thru. So in the end, it was kinda a compromise between the two. A little rich on hot days and a little lean on cool days...And lean as hell during start up. I have now put a 4500 Sniper Stealth on it, and manners have improved...Especially cold starts.