Original 4 bbl on a 70 Chally

[Tropicalcats]

What would have been the original 4bbl carb on a 1970 L.A. built Challenger? The one with all the enviromental stuff.
Anybody have one?

[70challengerrt]

Are you thinking of the carter AVS with the idle lean solenoid (I think that was what it was called).

[Tropicalcats]

Are you thinking of the carter AVS with the idle lean solenoid (I think that was what it was called).

That might be the one. Do you have numbers on it?

[70challengerrt]

Numbers for the carb or solenoid?

[Tropicalcats]

Numbers for the carb or solenoid?

 Both

[sleepychallenger]

what size engine? i had to search for a long time for mine. 383 hp Carter AVS 4734S

[Tropicalcats]

what size engine? i had to search for a long time for mine. 383 hp Carter AVS 4734S

sORRY

IT'S A 383 4bbl carb on a 1970 L.A. built Challenger

[70challengerrt]

If it was sold in california the model numbers are: manual            auto
                                                       340 ci    4936S             4937S
                                                       383 ci    R4217A           R4218A    Holley numbers
                                                       383 ci      N/A              4734S
                                                       440 ci    4739S             4740S
If its not sold in california      383 with avs   auto tranny can be 4736S, 4732S with air.
                                        383 with Holley and manual can be  R4736A reg., R4738A with shaker, R4367A reg.,
                                        383 with Holley and auto can be  R4737A reg., R4739A calif with shaker, R4368A reg.,
                                        440 with carter avs Auto is 4737S.
                                        440 with carter avs manual can be 4738S, 4741S with a/c,
                                        340 with carter avs Auto is 4934S
                                        340 with carter avs manual is 4934S
Note: the Holley carbs were only on the 383 335HP cars while the 383 with carter avs was on the 330HP cars.
I am still looking for the soleniod. I think I got them all for 1970 4bbl cars. I f anything looks of let me know but I think I got them right.

[sleepychallenger]

sORRY

IT'S A 383 4bbl carb on a 1970 L.A. built Challenger

mine is a 70 383 4bbl L.A. built challenger,

70challengerrt,
thanks for the post, loads of great information

[70challengerrt]

IF it was sold in california and has the emmissions stuff on it you are down to 3 carbs. If its a manual  its a Holley R4217A , if its an auto its R4218A (Holley) or 4734S (carter avs). Did you try talking to CODY. I would think he might have some insight.

[Tropicalcats]

IF it was sold in california and has the emmissions stuff on it you are down to 3 carbs. If its a manual  its a Holley R4217A , if its an auto its R4218A (Holley) or 4734S (carter avs). Did you try talking to CODY. I would think he might have some insight.

 Thats a good idea I'll shoot him an e-mail.

[rm23j8g]

Sorry, but I just found this thread...
I also have a JS23N0E and have had the same dilemma.  My car had some mid '70s Ford AVS on it when I got it, but otherwise is a survivor car.
I have no broadcast sheet, and I have looked "everywhere".....which is the basic problem in determining the exact carb.
My car has the N95 system, AC and is an automatic and the engine has the original orange paint and an SPD in December.
Does yours have any or all of that stuff?  Do you have the broadcast sheet?
I also did research and ended up with a Carter 4734S, but I'm still not absolutely sure my car didn't originally have the Holley.  I have gotten a lot of conflicting information about that, and without my broadcast sheet........

[Robb]

most LA cars dont have the broadcast sheet.

[sleepychallenger]

see if this posts this time