RE: {Chrysler 300} AFB carbs / Edelbrock

["Ron Waters" <ronbo97@xxxxxxxxxxx>]

AFBs first appeared in the 1958 model year. The 383 first appeared in 1959.

Ron

-----Original Message-----
From: chrysler-300-club-international@xxxxxxxxxxxxxxxx On Behalf Of John Grady
Sent: Sunday, July 30, 2023 3:50 PM
To: chrysler 300 club <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Subject: {Chrysler 300} AFB carbs / Edelbrock

Hi
Quick question I ought to  know myself but suddenly not sure . 
So 58 dodge 361 or 383 58 (?)—-  I think it was first use of afb vs wcfb on mopar ? 300 E had 2 afb too So rebuilt it twice — once outside , once myself could find  nothing really “ wrong” , terrible , repeatable bog when secondary opened . Cannot be fuel flow as no problem to 90 mph and we know bowls are full when sec first opens . Replaced pump anyway .
Gave up and changed to 650
edelbrock , ran perfect out of box , although yet to have high speed bog test , but seems fine .
( Larger diameter  neck , FYI and a lower carb body — I found 1” neck extension and opened air cleaner bottom) Without 1” it hits choke linkages . 
So in doing this , afterwards I noticed the  secondary air valve in the Edelbrock. ( described for the AFB in carter book too ) , but the carb I took off had no air valve at all , at first i thought missing (?) — aha- no wonder a bog  — but close inspection reveals no place to even mount it , no shaft holes etc . Carb i took off had the normal progressive linkage to secondary too.
So ? were early afb made without air valves ?  . = gonna bog? Are all afb narrow neck ? or were some larger neck a little later ? I thought afb and Edelbrock the same thing , but obviously not , or there was a change in AFB design ~ 1962 , later ?? 
Or I am just lucky and some kind of marine carb landed on my 383? 
comments welcome …
john G 




Sent from my iPhone

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