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Mod | | | Forums66 Topics128,094 Posts1,056,064 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Aug 2021 Posts: 12 'Bolter | | 'Bolter Joined: Aug 2021 Posts: 12 | Hey guys/gals, I was just wondering if anyone else has run into this problem. I picked up this '70 C10 which used to be a 6 cylinder but now has a 350 in it. I would like to replace the "flex" lower radiator hose with a formed hose but I found that the water pump has a 2" inlet and the radiator has a 1 1/2" outlet (I assume because it originally was a 6 cylinder.? Does anyone know of a hose that will work on this combo? Surely I'm not the first to be in this situation. Thanks for any help. Steve | | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | A friend who owned a radiator shop out in California close to mine back in the mid-1970s showed me a trick. Cut a short spool off the smaller diameter hose and slip it over the radiator nipple. Then slide the bigger hose over it DRY- - - -no sealer or lubricant, and tighten a worm drive clamp over the whole works. Crank the clamp down TIGHT! It will hold all the pressure the cooling system cam generate, without slipping. Works like a charm!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jul 2004 Posts: 2,987 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 2,987 | The upper hose on my '47 had been done like Jerry suggested. Worked great. I wasn't even aware of it till I one time decided to replace the hose.
Don't recall for sure what I did, as it's been several years ago. I think I just replaced it with a flex hose. | | | | | Joined: Feb 2016 Posts: 1,987 'Bolter | | 'Bolter Joined: Feb 2016 Posts: 1,987 | Using the rubber bushing works well if the diameters match, I recently used that method on installing a tee in the heater hose on my '57, no leaks.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| | | | | Joined: Aug 2021 Posts: 12 'Bolter | | 'Bolter Joined: Aug 2021 Posts: 12 | Thanks guys. I have seen that done on old bikes on the gas line where the petcock outlet and carb spigot didn't match but never thought about it for this. I'll give it a try. | | |
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