If you have an 88 GT with 4.9 cadillac, please let me know what you are using for the lower pipe to engine radiator hose. I had a stock 88 V6 part in place but now I need to replace it. The GM stock part (10120079) is no longer available and I can't find a part locally that looks like it will work.

Rolland

4cyl hose for coolant tube to water pump matches perfect. I used one from my 88 4cyl. I also used the 2nd smaller outlet from the coolant tube to run the heater core line along the passengers side towards rear. (Store bought hose off reel cut to length)

You could also use the outlet on the water pump elbow instead of the coolant tube if you like for running the heater core. I blocked mine off.

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-Kyle
Email: kakagiraffe@gmail.com
Aim: Littlechugger
1988 Notchback 4.9 V8, 5spd Isuzu, Spec Stage 4
True Dual Exhaust, Delta Cam (212,000 Miles)
1992 Honda Accord LX (220,000 Miles) 5spd

I used a NAPA 8448.
It's the stock V6 replacement. You'll have to use a long clamp (preferably) or a long zip tie to pull the hose away from the A/C pulley.

I don't know anything about the 4 cylinder hose, but if it places the hose further from the pulley, so much the better.

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Raydar
88 Formula IMSA Fastback. 4.9, NVG T550

Praise the Lowered!

I used the 88 4 Cyl hose. I had to trim some off so it wasn't squshed up.

[This message has been edited by josef644 (edited 03-07-2012).]

quote Originally posted by arte444: You could also use the outlet on the water pump elbow instead of the coolant tube if you like for running the heater core. I blocked mine off.

Important!!

For anyone with an 87 or an 88, you'll need to block off one of the heater hose fittings. Either the one on the right side pipe, or the one on the water pump housing.
DON'T just buy a rubber cap and clamp it off. They will deteriorate fairly quickly and can blow off at a really inopportune time. I've seen it happen. (Fortunately, it wasn't mine.) It was quite spectacular.
I have a rubber cap on my water pump fitting, but I filled the fitting with JB weld and let it cure before I clamped it on. (This was with the pump housing removed from the car.) I don't think it's going anywhere.

I don't think Arte444's is going anywhere, either.

[This message has been edited by Raydar (edited 03-08-2012).]

quote Originally posted by Raydar: Important!! For anyone with an 87 or an 88, you'll need to block off one of the heater hose fittings. Either the one on the right side pipe, or the one on the water pump housing. DON'T just buy a rubber cap and clamp it off. They will deteriorate fairly quickly and can blow off at a really inopportune time. I've seen it happen. (Fortunately, it wasn't mine.) It was quite spectacular. I have a rubber cap on my water pump fitting, but I filled the fitting with JB weld and let it cure before I clamped it on. (This was with the pump housing removed from the car.) I don't think it's going anywhere. I don't think Arte444's is going anywhere, either.

...or just connect it up to the fitting on the water pump as well...

Looks like the NAPA part is the right one. Ordered from their web site. Thanks!

Rolland

quote Originally posted by Raydar: Important!! For anyone with an 87 or an 88, you'll need to block off one of the heater hose fittings. Either the one on the right side pipe, or the one on the water pump housing. DON'T just buy a rubber cap and clamp it off. They will deteriorate fairly quickly and can blow off at a really inopportune time. I've seen it happen. (Fortunately, it wasn't mine.) It was quite spectacular. I have a rubber cap on my water pump fitting, but I filled the fitting with JB weld and let it cure before I clamped it on. (This was with the pump housing removed from the car.) I don't think it's going anywhere. I don't think Arte444's is going anywhere, either.

Mines a hose and bolt heh. It has been there for a couple years though.

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-Kyle
Email: kakagiraffe@gmail.com
Aim: Littlechugger
1988 Notchback 4.9 V8, 5spd Isuzu, Spec Stage 4
True Dual Exhaust, Delta Cam (212,000 Miles)
1992 Honda Accord LX (220,000 Miles) 5spd

quote Originally posted by Mickey_Moose: ...or just connect it up to the fitting on the water pump as well...

87-88 have two hose fittings and one return hose that comes from the front.
You have to cap off one fitting or the other. What are you suggesting?

quote Originally posted by Raydar: 87-88 have two hose fittings and one return hose that comes from the front. You have to cap off one fitting or the other. What are you suggesting?

Granted it has been some time, but the water pump has 2 inlets as well - or am I remembering something wrong?

There should be the rad feed hose, the heater core feed hose and the return hose (which splits at the back before the water pump).

[This message has been edited by Mickey_Moose (edited 03-09-2012).]