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Old 02-14-2017, 08:51 PM   #1
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Teach me (?!?!?!?)

Specs: Chevrolet 5.7 gas engine on a short bus.
Looks like pluming from house vs stuff I see in engines.
What is it being used for in the pics? Is it okay safe to use in a car?



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Old 02-14-2017, 08:56 PM   #2
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those are heater connections... they are using ball valves to turn on and off the hot coolant flow into the bus cabin for heating...

the factory heasters from Chevy would just be for the dashboard.. so when a bus body is installed by the 3rd party coach builder, they install their own heater connections and attach them to the chevrolet system..

csant tell exactly but almost looks like thats a heater-only system without A/C? or i just cant see the A/C connections.
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Old 02-14-2017, 08:57 PM   #3
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If I'm not mistaken that looks like the shut off for your secondary heater. The "5 1/2 Qt" would be a fluid quantity. The box above "vortec" is the air cleaner.

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Old 02-14-2017, 09:01 PM   #4
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Seems that it has the heater condenser on the side.
It also has rear AC too.

The unit is in rusty northern USA so im sure the heating was their priority.

Thanks for the lesson

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Old 02-14-2017, 10:21 PM   #5
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That's a fantastic motor.

The Vortec engines make great power.
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Old 02-14-2017, 10:25 PM   #6
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Yeah, I knew about the engine (from eastcoast teaching me)

I just thought that piping looked different than my Honda fit
Looks like stuff I can get at HD.



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Old 02-14-2017, 10:33 PM   #7
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Quote:
Originally Posted by oricha1984 View Post
Yeah, I knew about the engine (from eastcoast teaching me)

I just thought that piping looked different than my Honda fit
Looks like stuff I can get at HD.

Yep. Just good ole pipe fittings.

Regarding the engine... Have you ever driven anything with the GM TBI 350 that preceded the Vortec 5700? The difference in power is absolutely amazing.
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Old 02-14-2017, 10:35 PM   #8
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Originally Posted by Rameses View Post
Yep. Just good ole pipe fittings.

Regarding the engine... Have you ever driven anything with the GM TBI 350 that preceded the Vortec 5700? The difference in power is absolutely amazing.
Well, I drive a Honda fit and wife a Toyota corrolla. Lol
Biggest engine I've driven is a 7.3L and what ever they have on the big Uhaul trucks.

I've been advised to try to get a 5.7 or 6.0 Chevy engine. Im looking for a van chassis.

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Old 02-15-2017, 03:58 AM   #9
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The 4.8 is also good, just not as powerful as the 6.0
One work truck I use is STRONG at 160,000 with the 4.8.
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Old 02-15-2017, 06:31 AM   #10
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Those fittings will outlast the bus. Alot of stuff on engines (especially domestic) use NPT threads. (Pipe Tap threads). The Metal fittings are fine, DO NOT replace them with PVC, or the Grey plastic stuff from Home depot. Those will not handle the heat, and will have a service life of minutes.....
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