Water drain plugs on a 59-series block- What thread pitch are they?

[Tim Ayers]

In the process of doing up my 59 AB. The machine shop lost those two plugs on the lower sides of the block that drain out the coolant.

Can someone tell me what thread pitch these plugs are? They don't look like to pipe thread, but I can be wrong.

Thanks,

Tim

[deuce lover]

1/4 pipe I think.I will have to look. to be sure.Just checked if they are just behind the pumps- mine are 1/4 pipe.

[Tim Ayers]

Thank you.

[Russ/40]

I think 1/4" pipe

[john in illinois]

1/4 inch pipe fit in mine or 1/4 petcocks. I don't think it is a special thread.

John


Slow typer.

[Tim Ayers]

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Originally Posted by john in illinois

1/4 inch pipe fit in mine or 1/4 petcocks. I don't think it is a special thread.

John


Slow typer.

Thanks all! Now on to figuring out which oil gallery plugs my block had. Can't even tell you how angry I am at the machine shop.

[Jack E/NJ]

>>>Thanks all! Now on to figuring out which oil gallery plugs my block had.>>>

As I recall, a 1/8" pipe plug with a funny appendage behind the cam gear. And a brass plug behind the flywheel. Jack E/NJ