l bought Edelbrock kits for afb to do this on an F . two years ago I had made a very bad mistake , put J type manual choke on my F but more to that than it looks — as if you just “hook it” up , you have to release pressure on high idle cam by tapping gas to move choke (too long to get into has to do with free play slot and linkage to high idle cam , parts not there ) High idle cam if on a step locks up choke is result Anyway fuggetaboutit Have not done the E choke yet on that car .Looks ok with some cobbling up TBD But I found out that a ? Chinese kit on ebay or amazon at 1/2 the price of Ebrock is just as good, Bought two of those for another car to be built . But since then found out / decided AVS is flat out a far better carb , than our original or afb , and can come with electric choke , may need some machining on ram —- tbd So — Ill tell you what I did on baby hemi to dump the WCFB , used a 3/4” aluminum carb spacer for AVS adapted to the wcfb bolts, ( flatheads under gasket) then machined out dodge intake to wide open plenum got rid of the wcfb holes . However got carried away broke into exhaust heat hollow around plenum. Almost had to , anyway as AVS large secondary throttle discs hit hogged out dodge plenum wall no room ( wcfb in dodge is tiny ) Had to fix ( angled copper sheet piece 4/40 screw and copper high temp permatex rtv thin bead at edge to seal up . ( stuff IS tough) Also sealed exhaust heat from head port at port same way , copper disc in port and rtv Then took page from 400 hp F drilled the spacer sideways for water passage , 3/8 hoses , on idle side of spacer — so have “ air gap “ manifold water heat under idle side , E choke AVS on little dodge . Came out great big plenum. AVS IS totally bulletproof , 2 generations ahead 20 years after our stuff — a HRM dyno guy measured AF ratio idle to 6500 perfect out of box , got 650 hp out of 460 ford , sensors in each exhaust port .One AVS , 950 I think ( we would use 2,550 or 650 ) They were amazed at carb “ better than FI “ Carl has electric chokes on J, perfect , but I think an AFB swap ? On F with two AVS — to do right , bell crank gotta go , some kind of dual cable pull ( Lokar?) so you can set idle by idle stop separately in each carb .2903 has air valve , not idle stop . You match turns open . MAYBE the bell crank with one adjustable end and connect after setting both idle stops . ? need air flow thing ( sync thing for british carbs) to match idle air flow? all TBD but doing that on next ram build Time catching me , but way I would go . Carbs computer designed now ( AVS ) millionth inch type stuff on AVS , now from E brock , computer profiled venturi etc to make “ air valve secondary” gives perfect AF ratio at any air flow ( self adjusts valve to cfm need) They did that over emissions,,we benefit Interesting stuff, ymmv John ps on original setup , it never closes fully , ? you put a certain size drill in there at room temp sets up choke . Not fully closed ever = flood risk . Flooded ram hard to clear , really embarrassing( laugh) On Nov 11, 2025, at 4:05 PM, John Nowosacki <jsnowosacki@xxxxxxxxx> wrote: -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/A57A21AC-C00F-4FF1-87D7-4DF059493594%40gradyresearch.com. |
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