GMC instrument glass MPH

[Frank v R]

Hi all , please be aware that many more parts were made during the 50's , the 50's speedo head used a larger fitting for the cable, Levy's had both types , I had both types of speedos and cable housings , this would also account for a difference in the glass, newer production trucks with higher speeds,

[Bob Carriere]

Hi Frank

....that they were still producing the early 1940 style civvy instrument cluster in the early 50s????

I have both a 80 mph GMC cluster and quite a few delapidated 100 mph Chevy units...... the Chevy has the small head fitting at the back of the speedo head and the GMC has the larger fitting and the drive cable end piece is also different.... from memory square.

I will probably use the almost mint GMC cluster in my Chev and use the GMC cable you sold me for my cab 11. Rebuilt Chevy clusters are now in the $700 range.

Cheers

[BCA]

Thank you everyone. The Chev versus GMC issue is a good point and so far it makes sense that the Canadian CMP Chev's had 100mph glass and the American GMC's (like CCKW) had 80 mph glass.