67 Small Block radiator drain plug location

[Cary C.]

Where is the drain plug located on a 67 300HP small block radiator, and how do you get to it?

[Joe L.]

Re: 67 Small Block radiator drain plug location

Where is the drain plug located on a 67 300HP small block radiator, and how do you get to it?

Cary-----

Assuming the car has an original GM #3155316 aluminum radiator or a DeWitts reproduction thereof, the drain petcock is located on the left (driver) side BOTTOM surface of the radiator (i.e. it points downward). It is close to the very left side of the radiator. If the car has some other sort of replacement radiator, I would expect it would be in the same general location but with a replacement, anything is possible.

[Cary C.]

Re: 67 Small Block radiator drain plug location

Joe,
Thank you for your quick response. Is it possible that it is not visible because of the fan shroud?

[Joe L.]

Re: 67 Small Block radiator drain plug location

Joe,
Thank you for your quick response. Is it possible that it is not visible because of the fan shroud?

Cary-----


I don't recall that the fan shroud obscured it but my recollection on this is not too good. Hopefully, someone else with a 67 ought to be able to take a quick look and advise.

[Keith B.]

Re: 67 Small Block radiator drain plug location

if you are lying under the car you will see it. the fan shroud does not block it. I would only think yours got rung off in the radiator

[John H.]

Re: 67 Small Block radiator drain plug location

Joe,
Thank you for your quick response. Is it possible that it is not visible because of the fan shroud?

Cary -

Nope. It's not blocked by the fan shroud - looks like the photo below.


RadDrain650.jpg

[Brian M.]

Re: 67 Small Block radiator drain plug location

Wasn't a Plug used in 67?

[John F.]

Re: 67 Small Block radiator drain plug location

Wasn't a Plug used in 67?

That's what my 67 has/had when purchased in 78.

[John H.]

Re: 67 Small Block radiator drain plug location

Wasn't a Plug used in 67?

'66 small-block radiators used a St. Louis-installed plug; the plug was cancelled from the A.I.M. for '67, and I believe the aluminum petcock was included as part of the '67 radiator from Harrison. The current '67 JG calls for the aluminum petcock. The #3155316 radiator drawing should show that, but I don't have the drawing.

[John H.]

Re: 67 Small Block radiator drain plug location

'66 small-block radiators used a St. Louis-installed plug; the plug was cancelled from the A.I.M. for '67, and I believe the aluminum petcock was included as part of the '67 radiator from Harrison. The current '67 JG calls for the aluminum petcock. The #3155316 radiator drawing should show that, but I don't have the drawing.

UPDATE: Thanks to Tom DeWitt, the 1967 Harrison drawing for the #3155316 radiator shows the aluminum petcock drain valve as part of the radiator assembly as shipped from Harrison.