TQ, easy to find, cheap to buy and put a kit and floats in. Has an adjustable secondary air flap and adjustable secondary air flap travel setting so you can set secondaries for your particular application. Great throttle response with the small primaries. Plenty of parts still available. Here's some sites.
I had no problem with a junk yard Thermoquad that I rebuilt, and ran 14.20@98MPH on a junkyard 440 out of a Chrysler 300 in a '69 Coronet, with no issues. Don't know how they handle built engines. Are jets and metering rods still available?
had a t-quad on my lil red and man that thing ran nice. it was real sensitive to dirt though. i have 5 or 6 laying around here. i used to pick them up for $10-$20 at swap meets..
Thanks for the input guys. It looks like it's split pretty much in between. I ask this question because I may be coming upon some cash soon and want to put some money into my Dart. I have what is supposedly a rebuilt T-Quad on my 318 already but it very cold blooded while running very rich constantly. Its given me such frustration that I sometimes feel like just buying an Eddy and slapping it right on. I know good T-Quads are awesome performers and pretty good on gas. However this is going to be my daily soon so I need a smooth and dependable carb.
Considering the "HOLLEY" was NOT part of the question........... LMAO!
I have ran a AFB for many many years without issue. Finding tuneing parts for a T-Q can be hard. I like my T-Q over my AFB's, but there both dead dependable.
For a 318, the 600 cfm will do. Or the smaller primary T-Q. If it can be found with an electric choke, get it.