[Chrysler300] 1963-1964 300J-K - 150mph Speedo
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[Chrysler300] 1963-1964 300J-K - 150mph Speedo

Historical/technical questions for the J-K crowd:


  • Did all 300-J’s have the 150 mph speedometers and tachometers?
  • Were the 150 mph speedometers and/or the tachometers an option on any other 1963 Chryslers?  Maybe special order?
  • Did any of the 300-K’s or any other 1964 Chrysler (including police cars) have standard or optional 150-mph speedometers and/or tachometers?  Seems I had heard or read that all 30-K’s with four-speeds had tach’s instead of vacuum/performance gauges.
  • Did any 1963 or 1964 Chrysler with a 150-mph speedometer have a different speedometer pinion gear—or were all calibrated to the standard 1,000 RPM @ 60 mph?
  • I do recall that the 1963 300 Sport Pace Cars had compasses mounted in the consoles.  Was that option offered on any other ’63 or ’64 and did those work OK?



I just ran some calc’s for 8.50 x 14 tires (28.10” OD); no tire-to-road slippage or wiggle-woggle, 3.23 differential ratio; 150 MPH requires 5,797 RPM at the tail shaft.  140 MPH= 5,411 RPM.  Possible for a J or K? 



Rich Barber

Brentwood, CA


From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Matt Allyn allynentertainment@xxxxxxxxx [Chrysler300]
Sent: Sunday, December 03, 2017 3:27 PM
To: Chrysler300 <chrysler300@xxxxxxxxxxxxxxx>
Subject: [Chrysler300] 1962 300H - 150mph Speedo



Anyone have a 150mph speedometer for sale for my 1962 300H?

I have all other Astradome parts & pieces; but only have a 120mph speedo.



Matt Allyn


Posted by: "Rich Barber" <c300@xxxxxxx>

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