Q about serpentine belt

[owner 84]

Hi,

I have GMC 1984, it has 350 engine. I want to upgrade the serpentine belt to one serpentine belt as the new engines.

How Can I make it?

Should I change the waterpump?

Is there any difference between new and old engine's waterpump rotation whether it rotates clockwise or anti-clockwise?


please If you have video or pics will be much better.

Thanks,

[mongoose]

you have to change the water pump.

[owner 84]

Originally Posted by mongoose

you have to change the water pump.

Do you know which water pump can fit on the engine?

[gchemist]

Use a 94 and later water pump. Which brackets do you intend to use? There are three sets. All metal, two single brackets up to 95 and Vortec 96 and later.
Here is my set, I think they started in 91/92 up to 95.

[owner 84]

Originally Posted by gchemist

Use a 94 and later water pump. Which brackets do you intend to use? There are three sets. All metal, two single brackets up to 95 and Vortec 96 and later.
Here is my set, I think they started in 91/92 up to 95.

I actually have a limit budget, so I prefer to buy brackets for newer engines. However, I just wanted to know what engine I can get brackets from that fit on my engine exactly without modifications.

So the brackets that you have installed in your engine are from 91-95, right?

[Cue-Ball]

Is anyone running a setup like this without A/C and the big bracket that it uses? I'd like to go to a single belt, but don't have A/C and want to keep things as minimal as possible (crankshaft, water pump, P/S, alternator).

[baclay9]

^^^You can get an A/C delete pulley that Doorman makes and put it in place of the A/C.

[owner 84]

Originally Posted by Cue-Ball

Is anyone running a setup like this without A/C and the big bracket that it uses? I'd like to go to a single belt, but don't have A/C and want to keep things as minimal as possible (crankshaft, water pump, P/S, alternator).

I would never do any step if there wont be A/C. Man I'm in Saudi Arabia, that means 45ْ

I want something like what come from the factory.

For example, I take (alternator, A/c, water pump, brackets,and etc...) from 350 engine 1992 and then fit them to my 1984 350 engine. Has anyone done something like that?

[Cue-Ball]

Originally Posted by baclay9

^^^You can get an A/C delete pulley that Doorman makes and put it in place of the A/C.

That would still mean using the big bracket and an extra pulley. I'm hoping to avoid that and have a minimal setup (if possible).

Originally Posted by owner 84

I would never do any step if there wont be A/C. Man I'm in Saudi Arabia, that means 45ْ

It's 45 degrees here in Seattle too. Fahrenheit. I use my heater plenty, but have no need for A/C. Both of my last two cars I specifically looked for NO A/C models.

[bustedknuckles]

Originally Posted by owner 84

I want something like what come from the factory.

For example, I take (alternator, A/c, water pump, brackets,and etc...) from 350 engine 1992 and then fit them to my 1984 350 engine. Has anyone done something like that?

Yes. Mine is off a 1991 suburban. Works perfectly. Have to use the a/c hoses off the burb and move the wiring around.

[gchemist]

Everything thing from the 92 will bolt to your 350. Brackets, water pump and accessories from a 4.3 will also bolt on. My setup is from a S10 Blazer. Here is a picture off all parts.
http://www.summitracing.com/parts/NAL-12497698/

Truck brackets don't have a provision for an air pump. One more reason, I like my setup.

[DirtyLarry]

Check out this thread in the FAQ section

[dale3goodwrench]

I am running a serpentine setup with no A/C. It was on the motor when I bought it. One thing nobody has mentioned is you will have to flip your fan blade around when you do it, I wasnt sure the previous owner replaced the water pump so I put a new one on. Got one for a 1989 truck. Its a reverse flow pump. Your old alternator willl not work with the serpentine brackets. I have a 1985 truck. To use a newer alternator you have to use a 5 volt 85 ohm resistor in the trigger wire if I remember right. Here are a few pics of the setup.

[gchemist]

Interesting A/C delete pulley. I've never seen one like that one.

[DirtyLarry]

One thing nobody has mentioned is you will have to flip your fan blade around when you do it

Nobody has mentioned that because flipping your fan blade around is NOT the correct way to go about it. You need a reverse fan blade from a serpentine vehicle. Flipping your fan may work for a barnyard quick fix but the pitch and fan placement on the clutch will not be correct.

Interesting A/C delete pulley. I've never seen one like that one.

A lot of things going on with this one. Looks like early non-A/C Astro, S10 and some early 4.3L & 5.0L GMT400 C1500 had brackets like that with a skinny serpentine belt (87-89ish). To me that looks like a concoction of early skinny serpentine or multi-groove V-belt pieces (ps pump & alternator) with wide belt serpentine crank and water pump pulleys (notice how skinny the belt is on the water pump pulley). Quite creative system I might add.

I wouldn’t lean over that fan shroud while the engine is running with the blade on backwards!

[Sully Erna]

http://67-72chevytrucks.com/vboard/s...d.php?t=481708

this is what I did it was the cheapest way I could figure out hope it can help you
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[owner 84]

thanks guys

that is worth it.

this is what i want 'experience'