1964 GMC 2500 V6 Help

[CHSD]

Ive got the opportunity to get a 1964 gmc 2500 v6 that has been sitting for probably 25 to 30 years. I was told that they drove the truck to its current sitting location. I want to see if I can get the truck started to see if its worth putting any money into it.

Does anyone have any tips on what to do first. My plan is to change the oil, make sure their the needed fluids, possibly clean the carb, possibly spark plugs and then hook a battery up to it and see what happens.

Am I nuts? Is there something else I should do before trying it? Any advice would be greatly appreciated.

 

[akcabin]

I would take the spark plugs out and put some Marvel mystery oil in the cylinders. An oil can works OK. Letitseta couple days. Then turn the engine over by hand. New points, plug wires n plugs.
My late 50s GMC 4x4 truck has a 270 cu in in line 6 cylinder engine

 

[Grumman]

There are some good YouTube channels out there of folks dragging vehicles out of long term barn storage and getting them running again.


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[CHSD]

I would take the spark plugs out and put some Marvel mystery oil in the cylinders. An oil can works OK. Letitseta couple days. Then turn the engine over by hand. New points, plug wires n plugs.
My late 50s GMC 4x4 truck has a 270 cu in in line 6 cylinder engine

Thank you for the advice! I appreciate it!

 

[DooleyVT]

I have a 53 Ford 2500 pickup that sat for a long time and fuel system was the biggest problem. I cleaned the fuel tank and replaced the fuel lines and filter, rebuilt the carb, plugs and wires, and points. Fired right up after that. Good luck. I love them mid 60s GMC trucks

 

[Mtnmilsurp]

Clean out the engine block’s water jacket. Probably full of sediment.

 

[FoggyScope]

Unhook the fuel line and run it out of a jerry can you bring with. The fuel tank is probably full of rust. If you try and run it you might plug the fuel pump or carb. Or just unhook fuel and run it on starting fluid to make sure it runs then get it home and drop the tank and clean it out.

 

[260284]

I would take the spark plugs out and put some Marvel mystery oil in the cylinders. An oil can works OK. Letitseta couple days. Then turn the engine over by hand. New points, plug wires n plugs.
My late 50s GMC 4x4 truck has a 270 cu in in line 6 cylinder engine

This!! Don't try and turn the engine over at all until you let it soak a few days. Rings could be siezed and you will score the cylinders fast. I would run it out of a fresh can of fuel to start with.

 

[Truck24hr]

305 V6?

 

[CHSD]

305 V6?

Yeah that's what's in it. There's not a drop of oil in the engine. So I assuming it is all rusted siezed. Or is it worth it to fill with oil and give it a try?

 

[Truck24hr]

Yeah that's what's in it. There's not a drop of oil in the engine. So I assuming it is all rusted siezed. Or is it worth it to fill with oil and give it a try?

No oil or just none on the stick? I doubt it's seized. Others suggested pulling the plugs. I'd get some lube in thr cylinders and try to turn it by hand.

No matter what, carb will need replaced/rebuilt, and you'll need to get that fuel out.

I personally wouldn't be suprised if it ran pretty good with minimal work. I've torn down quite a few engines that have set for a long time.

If they weren't left open, it's hard to tell one that's set a month to one that's set for 20 years

 

[CJohnson]

Check out Vice grip garage. He’s probably a similar truck.

 

[Yoteassasin]

Yeah that's what's in it. There's not a drop of oil in the engine. So I assuming it is all rusted siezed. Or is it worth it to fill with oil and give it a try?

Sure try it . But those engines were terrible and heavy . With lq9s a dime a dozen get that tho g swapped tomorrow

 

[BLJ]

Sure try it . But those engines were terrible and heavy . With lq9s a dime a dozen get that tho g swapped tomorrow

Any info on these cheap LQ9’s?

 

[Yoteassasin]

Any info on these cheap LQ9’s?

they are all over market place and CL by me complete takeouts for 15 to 2k that’s the cost of a decent sbc rebuild around here

 

[BLJ]

After I typed that I wondered if our definition of cheap was the same.
That’s about what they are around here too.
When I think LS and cheap, I remember the days of the $200 5.3’s.

I agree that $1500 for a complete all aluminum engine is cheap. But I was hoping for $200 cheap. Thanks.

 

[Holeintheheadgang]

First thing is see if the crank shaft moves by hand, several ways to do that.

 

[Wrench]

Unhook the fuel line and run it out of a jerry can you bring with. The fuel tank is probably full of rust. If you try and run it you might plug the fuel pump or carb. Or just unhook fuel and run it on starting fluid to make sure it runs then get it home and drop the tank and clean it out.

Good advice right up to the starting fluid......don't use it!

Get a weed burner torch and without lighting it, let it flow into the carb. The torch is mixed perfectly and will do no harm, unlike starting fluid.

Be aware that a backfire can cause the torch to ignite.....so have someone holding it.

 

[BLJ]

Good advice right up to the starting fluid......don't use it!

Get a weed burner torch and without lighting it, let it flow into the carb. The torch is mixed perfectly and will do no harm, unlike starting fluid.

Be aware that a backfire can cause the torch to ignite.....so have someone holding it.

Interested in your thoughts about the starting fluid. Especially in reference to an older motor. Thanks.

 

[Wrench]

If it were a diesel....not such a big deal, on a spark ignition it can chew up pistons.

Propane on the other hand is not so violent and completely safe.