273 advise needed

My carb number is 3858. It's back on the car for now. Still have visions of getting it started at some point before pulling the engine.

AI says carbs correct for that car:
Edelbrock Performer 1404 Carburetor: 500 CFM, 4 Barrel, Square Bore, Manual Choke Inlet
Holley 4160 Series 600 CFM 4 Bbl Carburetor
Holley 4150 Series Double Pumper 4 Bbl Carburetor

Anyone else ever asked AI car questions? pi.ai is free. I did catch it making a mistake saying the 65 Barracuda had a 13 digit VIN. lol

Can anyone verify the information that the VIN is on the firewall? I've been trying to locate it.

On a 1965 Plymouth Barracuda, you can find the Vehicle Identification Number (VIN) in several locations:
  • The VIN is stamped on a plate that is attached to the left front door hinge pillar, which is visible when the driver's side door is open.
  • The VIN is also stamped on the vehicle's firewall, which is located in the engine compartment between the engine and the interior of the car.
  • The VIN may also be stamped on the frame rail, which can be found underneath the car.
LOL, There is no intelligence in AI. the 3858s AFB is for a 1965, 413 cu in big block, in a C-Body. Not even close for a 273. You should be able to get it running if it is in decent shape though. It is jetted too rich and has no velocity valve in the secondary. Additionally the correct AFB carbs for the CAP automatic transmission 273's are 1966 4122s and 1967 4305s.

I do not believe the Edelbrock carbs will fit without a spacer since the secondary bores will not open fully because of the small bores in the OEM intake. the air cleaner will not fit either.

I don't like Holley carbs and they will need an adapter as well as a different air cleaner and MOPAR throttle adapter.