ID this brake master cylinder?

[draker]

Someone asked me to help them ID their master cylinder. They said it came out of a truck. It's a 3/4" master.

Pics:

[510freak]

68 single reservoir,me thinks

[draker]

Is there a truck this may have came off of?

[510freak]

That I wish I could help with,maybe 520/521 ?

[flatcat19]

521's? Metric or standard thread?

[datsunmike]

520/521 had throttle cable not linkage. Never seen that style reservoir used back that far... usually just a tube shape. Looks like an L16 motor with the straight out block vent tube. Car I would think so, must be a 510? Can't find a single brake master for them, did they have singles?

Might be a truck master though. Wayno???

[510freak]

520/521 had throttle cable not linkage. Never seen that style reservoir used back that far... usually just a tube shape. Looks like an L16 motor with the straight out block vent tube. Car I would think so, must be a 510? Can't find a single brake master for them, did they have singles?

yes 68s had a single master(brake)

** edit 68 510s

[datsunmike]

Ah... Had a '68 and a 72 521... don't remember.

[flatcat19]

Is this in a 510?

Look at the threads.

510-metric.
521-SAE.

[wayno]

It looks to be an auto, as I see no clutch master in that photo, also that firewall mount is definitely not a 521 firewall.

[510freak]

Ah... Had a '68 and a 72 521... don't remember.

yeah not many 68s with a single master left, Most upgraded to the dual and disc,. Byrons ole Blue might still?

[510freak]

Is this in a 510?

Look at the threads.

510-metric.
521-SAE.

99.9999999% sure is a 510
Yes metric

[Laecaon]

I remember Marios barn find wagon had a single res MC. Also had the SSS intake. Heard the single res was used on the SSS...

[510freak]

I remember Marios barn find wagon had a single res MC. Also had the SSS intake. Heard the single res was used on the SSS...

this is a possibility
68's up here came single master, pretty sure it was standard issue across the board in 68?

[datsunmike]

It looks to be an auto, as I see no clutch master in that photo, also that firewall mount is definitely not a 521 firewall.

I couldn't be sure. You can see a bolt but might be the block off plate.

[flatcat19]

Draker said guy said it came off a truck.

[510freak]

Draker said guy said it came off a truck.

I see strut tower

[flatcat19]

I see people missing the point.

[wayno]

The 520/521 residual valve/brake line point straight up coming off the master, and they are SAE, that 4 bolt plate that the master bolts to is not from a 520 or 521, and the 520/521 all had cable throttle linkage like Dmike mentioned.

[510freak]

I see people missing the point.

If it is off a truck,wayno would most likely know?