Any seen an AFB with an AVS top???

-

xLURKxDOGx

"An angel fat, at satan's feast"
Joined
Dec 27, 2013
Messages
4,361
Reaction score
1,754
Location
PHX
This obviously doesn't look right and not entirely sure that it's a problem but I bought a 1967 Commando code 4305s that is a California carburetor. My question is what makes it a California carb and would the emissions have something to do with it being this way? It's in excellent condition and was a good deal just figured poke some more brains about it.

Thanks,

Jake

IMG_3686.JPG


IMG_3687.JPG


IMG_3690.JPG


IMG_3691.JPG
 
That's just an early style AFB carb and not a mismatch of parts. It may even have the smaller neck size. Not the normally size were used to having. Mr. Gasket makes annadapter for it to use with normal air cleaners.

An old friend of mine had a '67 Chrysler Imperial, 440 cid engine with that very carb on top.

Most people do not beileve that a 440 came with the smaller 625 AFB back in the day. They always say no way, 440's only came with a 750.
NOT TRUE!

And yes I do realize that the carb has the 3 step AVS covers.
 
You are aware that the choke thermostat is missing ? check the throttle bore diameter to see if has been altered
 
That's just an early style AFB carb and not a mismatch of parts. It may even have the smaller neck size. Not the normally size were used to having. Mr. Gasket makes annadapter for it to use with normal air cleaners.

An old friend of mine had a '67 Chrysler Imperial, 440 cid engine with that very carb on top.

Most people do not beileve that a 440 came with the smaller 625 AFB back in the day. They always say no way, 440's only came with a 750.
NOT TRUE!

And yes I do realize that the carb has the 3 step AVS covers.

Yup...the "lo-po" 440's (Chryslers, Imperials)came with the smaller AFB....the "Hi-PO" 440's (Charger, Coronet RT, GTX) came with the 750 AFB.
 
This obviously doesn't look right and not entirely sure that it's a problem but I bought a 1967 Commando code 4305s that is a California carburetor. My question is what makes it a California carb and would the emissions have something to do with it being this way? It's in excellent condition and was a good deal just figured poke some more brains about it.

Thanks,

Jake

View attachment 1715019690

View attachment 1715019691

View attachment 1715019692

View attachment 1715019693

Is it an actual 4305 base?. If it is, then someone has drilled the extra mounting holes to use it on a newer manifold (wider "Holley" pattern).
 
The AVS has the secondary air door on top, not underneath the boosters.
 
Is it an actual 4305 base?. If it is, then someone has drilled the extra mounting holes to use it on a newer manifold (wider "Holley" pattern).
Yeah, it's the 4305 base. I didn't notice those holes either. Thanks!
 
And the early AFB carbs had no weighted secondary door.
Actually the 273 HiPo AFB and the Max Wedge 3447S AFBs do have the weighted secondary doors or velocity valves as they were called. Also the '67 HiPo 440 used a AFB not a AVS. I believe Chrysler began using AVS carbs in '68.
 
Actually the 273 HiPo AFB and the Max Wedge 3447S AFBs do have the weighted secondary doors or velocity valves as they were called. Also the '67 HiPo 440 used a AFB not a AVS. I believe Chrysler began using AVS carbs in '68.
Thanks, it was my understanding that they starred in 68 as well. But just trying to make sense of this odd carb. Anyone have a 67 commando carb to compare? I've scoured the internet and can't find any pics.


Jake
 
Actually the 273 HiPo AFB and the Max Wedge 3447S AFBs do have the weighted secondary doors or velocity valves as they were called. Also the '67 HiPo 440 used a AFB not a AVS. I believe Chrysler began using AVS carbs in '68.
I know, thanks, this is what I was getting at without specifically pegging the year, make, models or carb numbers.
Thanks for the exacting information.

I just remember my old buddy Bob G's '67 that had that carb. An AFB without a weighted secondary air door.
 
That carb looks like a 4BBl off a 273. To me nothing odd about it at all.
 
Heres pics of my 67 273 Commando carb 4295S. Im currently rebuilding it. 2nd pic shows.weighted door you guys mentioned?

20170220_214513.jpg


20170220_214544.jpg
 
Here's specs Jake outta FSM
Thanks, it was my understanding that they starred in 68 as well. But just trying to make sense of this odd carb. Anyone have a 67 commando carb to compare? I've scoured the internet and can't find any pics.


Jake

20170221_071353.jpg
 
Hey Jake are you able to post side pics of linkage and springs. I got mine messed up and yours looks like a nice complete carb.

Thanks
Steve
 
-
Back
Top