Can anyone help me with this I have a thermoquad i took off a 1971 newsport sport, 383 hi-per, the carb i removed from the motor has these numbers on the bottom left tang, 77S - 01879, on the top of the carb there is 6-2473, i think this may be a build date?
I don't think this is the orginal carb that came with the car! Can anyone help me with finding out this. and what cfm it is.

 

6-2473 is just the upper bowl cover casting number, the ID number will probably be 4 digits followed by an "S". it should be on the lower left rear bolt flange. Earlier TQs also had a tag under one of the front bowl cover screws, later ones have a bar code sticker on the bowl cover with the Carter model and/or a Chrysler part number. International Harvester TQs also have a tag under a front bowl cover screw. The only thing I can find that has "77S" is
9077S 77 400 HP AT
9277S 79 360 Truck HD
Hope this helps some...

 

Thanks, I have since found a tag that was on it, the number is 6193, I believe this may be a holley carb number?

 

There is a Holley 4 barrel identified with the number R6193; the application listed for it is a 71 383 with manual tranny. They didn't start using thermoquads on big blocks until 72.

 

6193 is not a TQ number, do you have a pic of the carb?

 

I thought it made be a holley carb number(6193) which i found on the red tag on the carb. it does say carter thermoquad on the carb and the numbers etched on the left rear tang(base). i'll post pics tomorrow.
thks to all