72-74 150 mph speedo question

[RR Fan Dan]

Was the 150 mph speedo in the rallye gauge cluster an option? My 74 RR has a 120 mph. It’s an original RM21 car so not a clone. I don’t recall seeing any other photos with a 72-74 b body with 120mph speedo.

 

[Nacho-RT74]

As far I know 120 miles Speedo is a late 73 thing

 

[Vaanth]

Was the 150 mph speedo in the rallye gauge cluster an option? My 74 RR has a 120 mph. It’s an original RM21 car so not a clone. I don’t recall seeing any other photos with a 72-74 b body with 120mph speedo.

View attachment 1896567

The 150 MPH speedometer, part number 2985895, was used with the B-body Rallye instrument cluster for model years 1971, 1972, and 1973 model production until 12-13-1972. After 12-13-1972, the speedometer was changed to a 120 MPH speedometer, part number 3592397, for the remainder of the 1973 model year. The 120 MPH speedometer continued in the B-body Rallye instrument cluster for model year 1974, part number 3592758.

 

[MWbirdLOVER70]

The 150 MPH speedometer, part number 2985895, was used with the B-body Rallye instrument cluster for model years 1971, 1972, and 1973 model production until 12-13-1972. After 12-13-1972, the speedometer was changed to a 120 MPH speedometer, part number 3592397, for the remainder of the 1973 model year. The 120 MPH speedometer continued in the B-body Rallye instrument cluster for model year 1974, part number 3592758.

Wow that’s in-depth and thank you

 

[Nacho-RT74]

The 74 PN was changed from 73 pretty much due the blue lense color change for high beams used in 74. Up to 73 all high beams indicator “lenses” where red.

I meant “lense” because on 71 was a red tape instead an actual lense.

I’m also thinking the 150 miles speedo must carry some other PN because earliers were with vertical high beams indicator (and tape “lense” ) while laters (still 150 miles) could get horizontal indicator???

On 240 km speedos, this high beams indicator difference does exist. Can’t recall if 150 miles too.

On a side note, I never have seen a 200 km rallye speedo (120 Miles equivalent)

 

[RR Fan Dan]

The 150 MPH speedometer, part number 2985895, was used with the B-body Rallye instrument cluster for model years 1971, 1972, and 1973 model production until 12-13-1972. After 12-13-1972, the speedometer was changed to a 120 MPH speedometer, part number 3592397, for the remainder of the 1973 model year. The 120 MPH speedometer continued in the B-body Rallye instrument cluster for model year 1974, part number 3592758.

The 74 PN was changed from 73 pretty much due the blue lense color change for high beams used in 74. Up to 73 all high beams indicator “lenses” where red.

I meant “lense” because on 71 was a red tape instead an actual lense.

I’m also thinking the 150 miles speedo must carry some other PN because earliers were with vertical high beams indicator (and tape “lense” ) while laters could get horizontal indicator???

On 240 km speedos, this high beams indicator difference does exist. Can’t recall if 150 miles too.

On a side note, I never have seen a 200 km rallye speedo (120 Miles equivalent)

This place is a wealth of knowledge. Thanks.

 

[Nacho-RT74]

Just for show/reference purpouses

Two diff 240 Kilo speedo with vertical and horizontal slots for high beams indicator.

The vertical slot speedo was heavily damaged so I dissasembled it (odometer included) and was sold to a guy in Croatia, to become its Miles speedo into a Km unit. Being same calibration (analog scale) face and odometer assembly is enough to become a miles speedo into a kilo unit

I also had to fix my other one.

Now! I can’t recall if the blue lense was already changed by me or it was there. I know I wanted a blue lense on mine and didn’t want the vertical slot eliminating the 120km mark. Will dig on this because I have played with around 4 speedos, fixing one, converting another one, and dissasembling the one on pics. This was made more than 8 years ago.

I even refreshed the face finish (no decal over the full face, but using black shoes wax) and made JUST the red lines decal to fit over the yellowed ones.

 

[Nacho-RT74]

Here both with the red line decal… JUST the red line, not the full face.

As mentioned, I cleaned the face, applied some shoes polishing black wax and “polished”. Then attached the red line.

I SHOULD have noted PNs printed on them and that would tell which one was first but sorry, didn’t do it