Re: [Chrysler300] WCFB

John and all:

Back in 1985/86, I restored a 1956 Dodge, w/315 cu.in. polysphere engine. In 1956, I purchased a new 1956 Dodge Coronet D-500 (Hemi). It could beat anything running in western PA. So, I wondered what would happen if I put a larger carb on the latest one (polysphere engine) I was restoring. Happens I was restoring my newly acquired 1966 Chrysler 300 convertible at the time. I had purchased a new 650 cfm AFB and decided to use it temporarily on the Dodge. Well, well, what wonders I had uncovered. As an example, going up Wolf Creek Pass in Colorado, I got into a pissing match with a new T-Bird near the 10,000 ft. elevation. I was passing the Bird when he started to gun it and pull away from me. Well, I would have none of that and kicked my Dodge into passing gear and passed him with ease. Never saw the Bird after that. Bottom line is that the 650 cfm carb did wonders for that 315 engine. It simply released the unused power in that engine. Too bad that Dodge did not put a larger carb on the Dodge in the first place. Maybe would have beaten the 300B's on the beach Flying Mile in 1956! After all, in September of 1955, the 1956 Dodge set over 100 new land speed records on the sands of Bonneville that year. AND, that was with the 450 cfm carb on a polysphere engine!! As for mounting the 650 cfm carb to the manifold for the 450 cfm carb, I honed out a 1/2" plate of aluminum so I could install a vacuum port at the front and a port at the rear for a PCV hose from the PCV valve I had mounted on the right side valve cover.

I now have a multi function computer in the Dodge which includes cruise control, mpg, and a whole host of other goodie info. It bypasses the speedometer cable and takes the speed from the rpm's of the drive shaft and is accurate to about 1%. When I change tire sizes, I can recalibrate it. The kit came with magnets to install on the driveshaft and a pick-up for this function. I got this from J. C. Whitney back in 1985 for about $112..

Dan Reitz

Bell Canyon, CA

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In a message dated 12/10/2017 6:10:30 PM Pacific Standard Time, Chrysler300-noreply@xxxxxxxxxxxxxxx writes:

Hi all,
Into a problematic single quad setup WCFB, it sat 15-20 years with bad gas in it , gummed up , even throttle blades so sticky In bores spring cannot pull the carb closed . A little depressing , it has obviously also been messed with ( to Jamie’s point a few weeks back ) ; manual choke hacked into it.
I know they are good carbs when working right but once gummed up , or moronized, one wonders if removing all the lead balls etc to clean out passages might be needed . Not sure , but not into an atomic carb rebuild of unknown outcome today either For daily driver . Pro rebuild takes forever , not always all roses either , and big $ ..
So why the post ? WCFB is actually less than a 400 cfm carb , so wondered if small afb ( edelbrock) might have same bore centers .. like a 500 or 625 . And so fit on WCFB bolts a or throttle bore locations ? ? Has anyone changed from WCFB to a later carb.?? . afb is obvious successor ? Can Machine manifold , but easier probably to get another WCFB . Maybe .
Thoughts welcome , not advocating , but wondering . Rather a new serviceable carb, than an unknown walk in the park for more money.. and if on a trip , cannot get WCFB parts any more... generally .
Thanks,
J
Sent from my iPhone

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Posted by: John Grady <jkg@xxxxxxxxxxxxxxxxx>
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