Carter Thermoquads ~ 'More General Information'

another big new "breakthrough" but in reality, just using the secondary discharge tubes from a Qjet or TQ, in all throats of a 4bbl carb. getting rid of the booster venturi cluster altogether also means more airflow. we're seeing a lot of these "breakthroughs" lately...rehash of 50-60 year old technology from the golden age of NHRA/NASCAR racing and musclecars.
like the Street Demon carb made by Holley, with the "new" trap door 3 barrel design, in reality a TQ carb with an early 1963? Holley design secondary from their old trapdoor 4bbl racing carbs made for NASCAR.
most of the engineers and car magazine writers today weren't even alive back then to remember. they did notice an old Holley has the tendency to go rich at high rpm, when jetted dead nuts at idle/off idle...and they can also go lean...