Oil Cooler Line Connections at the Radiator

[ht89]

I've got a new OEM radiator for my 94 C1500 / 5.3 LY5 swap and want to use 6AN fittings to connect the engine oil lines to the radiator but I can't figure out what thread size the radiator inlets are.

Does any one know the radiator Engine Oil Cooler thread dimensions for 1994 GMT-400?

 

[df2x4]

Should be 20mm x 1.5.

 

[df2x4]

Here's a thread with some other info.

https://www.gmt400.com/threads/how-to-install-an-oil-cooler-lines.30454/

 

[Schurkey]

Are you SURE you want to use -6 hoses?

The oil cooler plumbing on my '97 7.4L uses 1/2" metal tube crimped to a section of hose. That would be the equivalent to -8 plumbing.

 

[ht89]

Should be 20mm x 1.5.

That's a perfect fit. Thanks man.

 

[df2x4]

That's a perfect fit. Thanks man.

No problem!