Upper Rad Hose question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Already Gone** · 04-30-2016, 02:30 PM

This is the second truck I've sen with this setup for an upper rad hose. Is this correct/original with a piece of hose at manifold neck then a steel tube then an hose to top rad connection?

midniteblues · 04-30-2016, 02:40 PM

i do believe only 4x4's came with the upper steel tube.

that is a pic of a 4x4 truck...notice the c member.

i dont know exactly what years they did or didnt use them but my 71 has one.

**Stocker** · 04-30-2016, 03:06 PM

^^ What he said, OEM on 4x4s. My '72 K20 has it.

**Already Gone** · 04-30-2016, 03:17 PM

Yes its from a K2500 GMC, Thanks for the info. Now I wonder why it was done this way.

**Stocker** · 04-30-2016, 07:42 PM

Something about the possibility of a long rubber hose sagging and making contact with the alternator belt.

Mike C · 04-30-2016, 09:30 PM

The engine on the 4 wheel drive trucks sits WAY back compared to the 2x4 trucks. This is so they can get enough length on the front driveshaft. Notice the deep fan shroud as well.

**Already Gone** · 04-30-2016, 11:11 PM

Thanks for the info. There is always something learn about these trucks.

palallin · 05-01-2016, 09:12 AM

Quote:

Originally Posted by Mike C

The engine on the 4 wheel drive trucks sits WAY back compared to the 2x4 trucks. This is so they can get enough length on the front driveshaft. Notice the deep fan shroud as well.

Law of Unintended Consequences: the positioning makes doing some otherwise simple things a lot more difficult, such as just about anything having to do with the distributor.

FWIW, my '69 K10 still has the tube.

Mike C · 05-01-2016, 10:53 AM

Yeah, when you have to rotate the oil pump drive with a screwdriver to line things up and you have a 4" lift and 35's it gets contortionist interesting!

**Stocker** · 05-01-2016, 02:16 PM

Quote:

Originally Posted by palallin

Law of Unintended Consequences: the positioning makes doing some otherwise simple things a lot more difficult, such as just about anything having to do with the distributor.

Which is exactly why I converted to HEI back in the early Eighties...

04-30-2016, 02:30 PM	#1
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,106	Upper Rad Hose question This is the second truck I've sen with this setup for an upper rad hose. Is this correct/original with a piece of hose at manifold neck then a steel tube then an hose to top rad connection? Attached Images __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

04-30-2016, 02:40 PM	#2
midniteblues Registered User Join Date: Jul 2011 Location: strausstown pa Posts: 3,394	Re: Upper Rad Hose question i do believe only 4x4's came with the upper steel tube. that is a pic of a 4x4 truck...notice the c member. i dont know exactly what years they did or didnt use them but my 71 has one. __________________ 81 camaro 355 4/spd 342 posi my first love. 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover.

04-30-2016, 03:06 PM	#3
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,582	Re: Upper Rad Hose question ^^ What he said, OEM on 4x4s. My '72 K20 has it. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

04-30-2016, 03:17 PM	#4
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,106	Re: Upper Rad Hose question Yes its from a K2500 GMC, Thanks for the info. Now I wonder why it was done this way. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

04-30-2016, 07:42 PM	#5
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,582	Re: Upper Rad Hose question Something about the possibility of a long rubber hose sagging and making contact with the alternator belt. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

04-30-2016, 09:30 PM	#6
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: Upper Rad Hose question The engine on the 4 wheel drive trucks sits WAY back compared to the 2x4 trucks. This is so they can get enough length on the front driveshaft. Notice the deep fan shroud as well. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

04-30-2016, 11:11 PM	#7
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,106	Re: Upper Rad Hose question Thanks for the info. There is always something learn about these trucks. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

05-01-2016, 10:53 AM	#9
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,715	Re: Upper Rad Hose question Yeah, when you have to rotate the oil pump drive with a screwdriver to line things up and you have a 4" lift and 35's it gets contortionist interesting! __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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