Carter Thermoquads ~ 'More General Information'

~ Just what were the accurate CFM Ratings of the Carter Thermoquad ~

'Carter Carburetor Company' {ACF Industries} had a different testing method on determining CFM {Cubic Feet per Minute} than it's competitor 'Holley Industries'.

Advertising is one thing, and actual 'flow' was something else.

Were the CFM numbers 'exaggerated'. Well, of course.

When the '1st' Carter Thermoquad came equipped on the factory delivered 'Mopar 340' in 1971, they were all sorts of CFM numbers tossed around.

Mostly, the number that was stated the most was > 800 CFM's

But that seemed 'high', and then it was 750 to 800 CFM's.

The 1 3/8" {1.375"} Primary x 2 1/4" {2.250"} Secondary Thermoquad #4972S had an 'honest guestimate' of 760 CFM's.

But John Bauman {Fuel Technician} for Chrysler Performance let the proverbial 'Cat-out-of-the-Bag' and stated that the #4972S had a flow of 737 CFM's.

So much so, that he even called the Thermoquad the '737' Big Mouth.