Radiator Hoses

[Smitty]

Using Serpentine setup from a '93 GM 350. Anyone have a Pt# for the preformed upper hose that will clear the alternator? Also a number for the lower one would be nice as well. Am using a 4 core aluminum radiator. Thanks for any help!

[B. W.]

I'm in the same boat you are just not there yet.

I haven't tried yet but the stock upper hose for a 1993 may work if you use a 1993 thermostat housing (hose Dayco E71884) housing carQuest 84992

I believe a stock lower will work (NAPA 7463)

[46stude]

On my '72, I used a Gates 22290 upper. I had to trim 1-5/8" off at the radiator end, and I used the factory water neck off the '93.

I believe the factory '72 lower hose is what I used on mine. I had to tweak the frame rail for clearance, but it was no big deal.

[stsalvage]

Mixing new with old never look right.But if its all you have at the moment.Its works but looks out of place.I've had a fan bolt brake on me.Not fun I was on a steep grade.That's why i used the pulleys off my 3 ton bob tail that use to use a 3 pulley system.For the PTO.Ya i heard that mother snap it went into the fan and it was gone But i had 1 more holding strong.

I'm not a one belt man.I don't have money falling out of my butt.A engine now days is 2500 used is 1200 for a trusted one and 500 for taking a gamble.

I've done some research on on the radiator hoses and i found out the one i like the best is the 1967-68 chevy truck 327 water housing out let is straight out words.

I use the Edalbrock performer intake with the temp sending unit right next to the water out let housing.The one that comes on the 1969-72 sucks can't use the temp sending unit the hose hits it.But with the 1967-68 327 out let on a 350 most of them are cast iron better.I kill to birds with 1 stone one throw.

They make a top hose that curves just right over the shroud and snakes right to the upper out let.Never had a problem.Never had a blown head gasket.Been in the scraping business for over 24 years.Lost 3 hoses but never fried the motor.

I'm a gauge watcher every 2 miles i glance at my gauges go over 490K on one motor pulling a trailer.Have to double my mileage like a bus or a motor home cus of the weight my engine pushes.Here are some pics on the 9 trucks i own from 1964-72

[DD1]

I had the same issue with the serpentine belt system; not sure if I still have the tag on my upper hose, but I'll check and see what I can find. Probably should have kept some notes somewhere.

What are you using for the lower hose? I was having trouble with the lower hose hitting the frame. My truck is not drive-able yet, so it's not an issue, but it will be at some point hopefully.

[DD1]

This is the hose I ordered from Rock Auto for the upper hose, and I'm pretty sure it's the one I ended up using. (I bought and returned many hoses to Auto zone and Rock Auto).

I searched for the hose for a "1990 CHEVROLET C1500 PICKUP 5.7L 350cid V8" on their site. It's a GATES 21191.

https://www.rockauto.com/en/moreinfo...=1031184&jsn=2

[Jose's 69]

I used an upper hose of a 69 trans am I think. I had one of those swivel water necks. Just trimmed as necessary. The lower I used the stock 69 one. It rubbed on the frame a little so I split a piece of hose down the middle and put that as an extra layer were it touched the frame.

[Shinysideup]

Heres a solution for your serpentine setup. I going this route with a 1998 350 engine.
http://67-72chevytrucks.com/vboard/s...d.php?t=723941

*Looks to be the same hose as Jose's post above.

[Jose's 69]

Originally Posted by Shinysideup

Heres a solution for your serpentine setup. I going this route with a 1998 350 engine.
http://67-72chevytrucks.com/vboard/s...d.php?t=723941

*Looks to be the same hose as Jose's post above.

Yup. I just used the swivel water neck cus I already had it. Worked great and didn't struggle with the end diameter being to small.