Thermoquads

The Proform main bodies have sculpted venturis, no choke horn, and adjustable air-bleeds…FWIW, when I bought the main body for my 650 dp carb, I read that you could gain 25-50 hp. I thought “Yeah right”, but I tried it anyway because it was only 99 bucks at the time and it would bump me up to 750 cfm. To my surprise, my car picked up 3 tenths and a little over 3 mph in the ¼ mile right off the bat…that’s probably about 30 hp! Then I started tuning and it just got quicker from there (I carved a couple more tenths off over time).