Lower Radiator Hose for BB??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

muckyp · 09-27-2010, 09:53 PM

What I have is a '70 with a 454. I bought it as someone elses unfinished project and it did not have any radiator hoses on it so I have nothing to use as a guide for a new one. Does anyone know a part number for the lower radiator hose? Or maybe a pic of the correct one? Autozone can't seem to get it right. Thanks for any help.

1968SWBBigBlock · 09-27-2010, 10:29 PM

i ended up making my own
I went into my local napa and just dug thru the racks until I found one section of each that I liked
I had to change mine around to clear my low mount alternator

petey-pablo · 09-28-2010, 02:42 AM

I used one from a 1978 CHEVROLET C10 PICKUP 7.4L 454cid I think thats waht the gave me.. the bends are perfect.. looks like this I have an electric water pump i dont know if that matters though..

muckyp · 09-28-2010, 08:54 AM

Thanks guys I will try the 78 route.
Posted via Mobile Device

**Tom Vogel** · 09-28-2010, 09:27 AM

These are the correct NAPA hose numbers for factory BB for our trucks. 7459 and 7371. They are on my truck and fit perfectly and clear everything.

Gobbles · 09-28-2010, 10:09 AM

Great information! I searched my local shops trying to match up my line and never found anything, I had to put my trash one back one and had planned on purchasing the expensive braided hose line, now I dont need too!

BB72CHEVKT · 09-28-2010, 03:51 PM

Are you running along or short water pump?

epashhans · 09-28-2010, 06:57 PM

I've got a 454 in my 67 and I got my hose at autozone or carquest (can't remember which one) no problem. I just asked for a lower hose for a 68 with a 396. They had to order it, but it is a perfect fit. Long water pump on mine. I will look to see if I have a part number.

muckyp · 09-29-2010, 12:09 AM

Pardon my ignorance but, how do I determine if the water pump is short or long? Here is a not so good pic, can it be determined from this photo? Thanks again for the help.

epashhans · 09-29-2010, 10:16 PM

Comparison between the short leg water pump assembly used on early big blocks and the long leg pump (rear) found on most late model engines.

“Tall” water pump has reinforced snout to strengthen the pump body and is interchangeable between Mark IV, Gen.V and Gen.VI motors with V–belts. Serpentine belt systems use a reverse rotation water pump.

KevinK7 · 12-07-2019, 09:44 PM

A really old thread, but good info on the Radiator hoses

I will add, on the short vs. long water pump. A quick visual inspection, if the back of the pump is right up against timing cover, you've got the SHORT pump.
For the record, my '68 (396) does have the short pump.

Even for an almost 10 year old thread ; ), I just looked up the NAPA radiator hose numbers, and they still come up

Christianad1156 · 03-22-2023, 11:04 PM

I recently found a lower radiator hose from Jeg's that fit my set up well:

Lower Radiator Hose for 1969-1972 Chevrolet/GMC Truck [Direct-Fit Replacement for GM 3947117]
Part Number: 555-52467

I'm about to buy the upper radiator hose from them too. I saw it on a truck in at a car show last summer. However, at the same car show I met a guy that had one from LMC that looks a lot like the Napa part referenced above and seemed to fit great too.

Upper Radiator Hose for 1968-1972 Chevrolet/GMC Truck [Direct-Fit Replacement for GM 3947120]
Part Number: 555-52462

09-27-2010, 09:53 PM	#1
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	Lower Radiator Hose for BB??? What I have is a '70 with a 454. I bought it as someone elses unfinished project and it did not have any radiator hoses on it so I have nothing to use as a guide for a new one. Does anyone know a part number for the lower radiator hose? Or maybe a pic of the correct one? Autozone can't seem to get it right. Thanks for any help.

09-27-2010, 10:29 PM	#2
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Lower Radiator Hose for BB??? i ended up making my own I went into my local napa and just dug thru the racks until I found one section of each that I liked I had to change mine around to clear my low mount alternator __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

09-28-2010, 02:42 AM	#3
petey-pablo "THE GREEN GOBLIN" Join Date: Mar 2008 Location: Fremont Ca. Posts: 1,025	Re: Lower Radiator Hose for BB??? I used one from a 1978 CHEVROLET C10 PICKUP 7.4L 454cid I think thats waht the gave me.. the bends are perfect.. looks like this I have an electric water pump i dont know if that matters though.. Attached Images __________________ Petey-pablo "THE GREEN GOBLIN" 1972 Cheyenne 10 Short Fleet Side Front 2.5inch Spindles with 2inch Springs Rear 4inch drop Springs. 454BBC TH400,Posi 1971 Cheyenne 10 Long Fleet Side 454BBC TH350,Posi Sold Drive it like you stole it! Petey-pablo@sbcglobal.net Last edited by petey-pablo; 09-28-2010 at 02:52 AM. Reason: add image

09-28-2010, 08:54 AM	#4
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	Re: Lower Radiator Hose for BB??? Thanks guys I will try the 78 route. Posted via Mobile Device

09-28-2010, 09:27 AM	#5
Tom Vogel 2WD Jimmy Join Date: Mar 2005 Location: Davis County, Utah Posts: 2,563	Re: Lower Radiator Hose for BB??? These are the correct NAPA hose numbers for factory BB for our trucks. 7459 and 7371. They are on my truck and fit perfectly and clear everything. Last edited by Tom Vogel; 09-28-2010 at 09:28 AM.

09-28-2010, 10:09 AM	#6
Gobbles Registered User Join Date: Sep 2010 Location: British Columbia Posts: 484	Re: Lower Radiator Hose for BB??? Great information! I searched my local shops trying to match up my line and never found anything, I had to put my trash one back one and had planned on purchasing the expensive braided hose line, now I dont need too! __________________ Trevor "You already said spite"

09-28-2010, 03:51 PM	#7
BB72CHEVKT Junior Member Join Date: Mar 2007 Location: Hideaway, TX Posts: 4,948	Re: Lower Radiator Hose for BB??? Are you running along or short water pump? __________________ 71 Suburban 350/700R4 Project Trixie 72 CHEVY,Highlander,SWB,396,T400

09-28-2010, 06:57 PM	#8
epashhans Registered User Join Date: Jul 2009 Location: MT Posts: 319	Re: Lower Radiator Hose for BB??? I've got a 454 in my 67 and I got my hose at autozone or carquest (can't remember which one) no problem. I just asked for a lower hose for a 68 with a 396. They had to order it, but it is a perfect fit. Long water pump on mine. I will look to see if I have a part number. __________________ '67 C-10 Shorty - 454, 5spd, and speed holes!

09-29-2010, 12:09 AM	#9
muckyp Registered User Join Date: Mar 2001 Location: Forney, Texas Posts: 290	Re: Lower Radiator Hose for BB??? Pardon my ignorance but, how do I determine if the water pump is short or long? Here is a not so good pic, can it be determined from this photo? Thanks again for the help. Attached Images

09-29-2010, 10:16 PM	#10
epashhans Registered User Join Date: Jul 2009 Location: MT Posts: 319	Re: Lower Radiator Hose for BB??? Comparison between the short leg water pump assembly used on early big blocks and the long leg pump (rear) found on most late model engines. “Tall” water pump has reinforced snout to strengthen the pump body and is interchangeable between Mark IV, Gen.V and Gen.VI motors with V–belts. Serpentine belt systems use a reverse rotation water pump. __________________ '67 C-10 Shorty - 454, 5spd, and speed holes!

12-07-2019, 09:44 PM	#11
KevinK7 Registered User Join Date: Oct 2017 Location: Hudson Valley, New York Posts: 609	Re: Lower Radiator Hose for BB??? A really old thread, but good info on the Radiator hoses I will add, on the short vs. long water pump. A quick visual inspection, if the back of the pump is right up against timing cover, you've got the SHORT pump. For the record, my '68 (396) does have the short pump. Even for an almost 10 year old thread ; ), I just looked up the NAPA radiator hose numbers, and they still come up __________________ '68 C20 Utility 396 4sp (BuildThread: http://67-72chevytrucks.com/vboard/s...d.php?t=806904 ) '68 C10 50th

03-22-2023, 11:04 PM	#12
Christianad1156 Registered User Join Date: Jan 2019 Location: Jacksonville, FL Posts: 14	Re: Lower Radiator Hose for BB??? I recently found a lower radiator hose from Jeg's that fit my set up well: Lower Radiator Hose for 1969-1972 Chevrolet/GMC Truck [Direct-Fit Replacement for GM 3947117] Part Number: 555-52467 I'm about to buy the upper radiator hose from them too. I saw it on a truck in at a car show last summer. However, at the same car show I met a guy that had one from LMC that looks a lot like the Napa part referenced above and seemed to fit great too. Upper Radiator Hose for 1968-1972 Chevrolet/GMC Truck [Direct-Fit Replacement for GM 3947120] Part Number: 555-52462



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