[Chrysler300] Driveshaft "clunk" on 1957 300C

["Ray Melton rfmelton@xxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

Hello All -

Barely a year and 1,000 miles after a comprehensive restoration on my 
late father's 1957 Chrysler 300C, I am noticing  a pretty loud "clunk" 
and "jerk" when initially engaging a gear (either R or D) from neutral, 
and also when the transmission shifts from 2nd to 3rd under light 
throttle.  Inspection underneath shows that the rear (conventional) 
U-joint is nice and tight (it was replaced during the restoration), and 
there is minimal backlash from the ring and pinion gears.  However, the 
noise definitely seems to be coming from the front driveshaft joint (the 
ball & trunnion type) which was also replaced during the restoration, 
and there is considerable rotational play (1/4" - 1/2") at that joint 
connecting to the transmission.  The rubber boot around the joint 
precludes visualization of any play in that joint, so I can't tell where 
the looseness is occurring.   The long hollow driveshaft really 
amplifies the clunk and rings like a bell!   I can't think of any reason 
for that joint to have degraded so significantly in such a short time 
and mileage.

I recall from previous conversations that the "ball & trunnion" joint at 
the front of the driveshaft has been a frequent point of concern, and 
instead of just replacing that joint with another new one of the same 
type, I am wondering if there is a "conversion kit" available whereby I 
can convert to a traditional U-joint design.

Any thought and suggestions would be welcome.

Ray Melton  Las Cruces, NM     1957 Chrysler 300C  cvt White/Gauguin   
S/N 3N572517



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Posted by: Ray Melton <rfmelton@xxxxxxx>
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