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Project Smoke Wagon

1984 GMC Jimmy 383 Stroker | SM466
It wo
Are they custom aftermarket or custom home made? I have always been under the impression accessories must be driven by the crankshaft. Is this setup something you have already had installed and gotten extended use out of? Not trying to slam your build, just trying to learn if it works or not. Batteries can reverse polarity which can be checked with an ohmmeter.

it works fine as long as the alternator spins it’s pulley within its range to produce 14v it’s working as far as I am concerned whether attached to the crank pulley or not. I don’t see why it would “have” to be around the crank. Adding that would cause it to spin to slow with its current set up. I might add it to the crankshaft later (smaller pulley) but I really don’t see how it could be an issue.
 
I don't want to side track your build thread more, and maybe I shouldn't have said anything. The only reason it won't work is as a stated before. If the A/C belt does not have enough traction surface to run the water pump and the alternator at full load, it can cause slippage at the water pump pulley.
Or if the A/C belt breaks.

But as we have already seen, you are smart enough to keep an eye on things, so carry on. Sorry for the derail.
 
I don't want to side track your build thread more, and maybe I shouldn't have said anything. The only reason it won't work is as a stated before. If the A/C belt does not have enough traction surface to run the water pump and the alternator at full load, it can cause slippage at the water pump pulley.
Or if the A/C belt breaks.

But as we have already seen, you are smart enough to keep an eye on things, so carry on. Sorry for the derail.

That’s a really good point and I didn’t catch that in the comment before. That makes me wonder if the water pump is spinning enough and that was causing the over heating issues before. You’re not derailing anything and I certainly appreciate the comments and input. I think I’ll throw a belt over just to be sure. I believe I have a belt long enough for the alternator > WP > Crank but not one that will reach the PS pump with everything else. I definitely do not want the water pump slipping.
 
Well...... scary smoke show at first start. Smelt like coolant. I was shaking my head in defeat but I believe it was just residual coolant left in the exhaust.

The smoke did clear up.

I think @6872xtc is correct about the way this belt system is set up. I really feel like it’s not cooling properly and I want to make sure that is addressed. The temp jumped up to 220 and I shut it down. There was a lot of pressure at the upper radiator hose so much so it nearly blew off. I’m tempted to just remove the thermostat. But I am going to put a belt over the wp>crank>alt and see if I have the same issue.

The transmission was leaking fluid like crazy. I think the angle it was hanging caused the gasket to get soaked and is now leaking. I believe the gasket swelled up as the pan bolts were way to loose. I had a jack stand and block of wood propping it up but maybe not high enough.

Engine sounds great and once I get it all set up I’ll be sure to post a video up.
 
@6872xtc turns out the belt will reach crank>wp>alt>ps this only leaves 1/4 of the WP pulley having a belt on it.

I think I will get a belt the same length and run it crank>WP>AC that will cover 1/2 of the WP pulley and should give enough belt surface to the WP pulley
 
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All that I can say is try it and see what happens. I don't know how to find out how much it takes of belt surface contact to drive the accessories. Heck, I figured that if the belt slipped, you would just just notice the voltage go down. I didn't think that it would bother the water pump that much since you don't have a mechanical fan on it. But you are definitely going to find out if that's the problem from what you are saying.
 
Not sure but also make sure water pump is turning the correct direction according to how the belts are ran.
 
Not sure but also make sure water pump is turning the correct direction according to how the belts are ran.

If it’s going around the crank shouldn’t it be running the correct direction? If everything is around the crank everything should be spinning clockwise, correct?
 
If it’s going around the crank shouldn’t it be running the correct direction? If everything is around the crank everything should be spinning clockwise, correct?
On the crankshaft yes it will turn the right way.
As for belts, run a belt around crank, wp, alternator and another belt on crank wp a/c.
Power steering usually directly to crank.
Unless you have different accessories and pulleys don't line up like this.
That's the stock configuration
 
On the crankshaft yes it will turn the right way.
As for belts, run a belt around crank, wp, alternator and another belt on crank wp a/c.
Power steering usually directly to crank.
Unless you have different accessories and pulleys don't line up like this.
That's the stock configuration

Currently have

Furthest back crank pulley : Crank > PS

center crank pulley : Crank > WP > ALT > PS

Front most crank pulley : Crank > WP > AC

Will that work?

I don’t think I can fit a belt on the right without touching the PS pulley
 
Currently have

Furthest back crank pulley : Crank > PS

center crank pulley : Crank > WP > ALT > PS

Front most crank pulley : Crank > WP > AC

Will that work?

I don’t think I can fit a belt on the right without touching the PS pulley
Well having the ps added helps the power steering but as long as you have the alternator at least 1/3 covered.
The wp having 2 belts on it also helps it.
I guess it should be good
 
Thermostat in right side up? It does happen...
Are you using the factory gauge? I have a set of mechanical gauges to use in mine when I swap the new engine in.
 
Auto meter gauge connec
Thermostat in right side up? It does happen...
Are you using the factory gauge? I have a set of mechanical gauges to use in mine when I swap the new engine in.

Auto meter gauges water temp taken between 1 & 3 on the head. Thermostat is spring down. Maybe I need a new radiator? Will fire it up with the belts and see if anything changes
 
Are you sure you have the correct water pump for you year. Is it possible you have a reverse flow pump?
 
Are you sure you have the correct water pump for you year. Is it possible you have a reverse flow pump?

Definitely the correct water pump.

I’m starting to lean towards the fans not being able to keep this cool at idle.

With the trans and AC cooler in front of the radiator I just don’t think these fans can pull enough air. They don’t pull anything compared to a stock fan.

I’m going to pull the electric fans out and get a more stock set up with a fan shroud. I may have to swap to a long neck water pump as well to get the fan at about 3” from the radiator.
 
Stopped by my uncles and he has a shop full of anything you could think of GM.

Picked up three different fans to try out on the front of the motor.

Nice to have hoarders in the family lol

I’m hoping to see a difference in cooling with an actual fan pulling in air. I just think these and electric fans in general are garbage. I always have and I always will. On my uncles pro street Chevelle we run a $30 steel fan from summit. We tried electric fans but couldn’t get the motor to cool down when cruising the streets. He ran flex fans all through the 70’s-90’s and now the new steel fans are better than the flex fans at cooling at low rpms.

Will post the results in a bit.

794469F0-7EF6-491E-B033-D11E35C93974.jpeg
 
So one question and one observation

what was up with the spark show? Did I miss that?



if this went from serpentine to v pulley, the pump is probably backwards. May be worth throwing a pump at it
 
So one question and one observation

what was up with the spark show? Did I miss that?



if this went from serpentine to v pulley, the pump is probably backwards. May be worth throwing a pump at it

Brand new water pump is on it and it’s the correct clockwise rotation.

Spark show was a short to ground from my ignition wire on the starter housing when I put the negative battery cable on. That’s all sorted.

I’m still having an overheating issue with the belts now on properly.

I believe it’s the fans. They just don’t feel powerful enough. I thought this may have been the issue before as well and had planned on changing back to a mechanical fan set up.

It does run a little cooler with the 180 thermostat instead of the 195.

I believe the water in the radiator is not getting cooled because it’s basically just sitting in the radiator with no air flow.

I remember opening the engine bay on cars and having my hair blow right back when they didn’t have a fan shroud. These fans could barely blow a piece of paper.
 

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