Need some help finding the correct size diameter for the lower radiator hose (radiator side). I've bought 1 from OPGI, 1 from NAPA, and a universal one. All the inlets for the radiator side are slightly too big at 1-3/4". Can someone please confirm the correct size? I'm guessing 1-5/8" but I can't find find the info in my manuals (reprint/blurry small words)

Thanks for the help!

 

Give Fusick a call and see if they can help.

 

I had similar issues. See if this post helps out:

https://classicoldsmobile.com/forums...p-hose-154145/

 

Yeah, I suspect the hose is the correct size, but the radiator has been changed to a '71-up version that has a smaller diameter fitting.

 

There is a rubber bushing available for this problem.

 

I used a gates rubber bushing to accommodate my 70 waterpump VS 72 radiator mismatch they work very good w no issues

I dont recall the exact one tho

 

I just read this again. The 71-up radiator has a 1 1/2" outlet compared to 1 3/4" for the 70-older versions, so you will need one of the rubber sleeve adapters as stated above to convert from 1 3/4" to 1 1/2".

Gates 26391

https://www.rockauto.com/en/parts/ga...d.+reducer,385

https://www.oreillyauto.com/detail/c...t0/26391?pos=1