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Old 03-09-2008, 02:10 AM   #1
smirch9
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New to me

Just bought this:

99 GMC 2500
5.7L Vortec
4l80E transmission
53,000 miles

The best part is that it burns natural gas and at .90 a gallon equilivent its going to save me alot of money!
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Old 03-09-2008, 03:26 AM   #2
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Re: New to me

iv been pondering a natural gas conversion for my 83, the only down side is the fuel cell.
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Old 03-09-2008, 03:33 AM   #3
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Re: New to me

Nice clean looking ride. Congrats!!
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Old 03-09-2008, 03:52 AM   #4
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Re: New to me

awesome daily driver!
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Old 03-09-2008, 04:00 AM   #5
smirch9
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Re: New to me

Well I converted my 98 a while back and its been doing very well. So now this addition and my wifes 07 will be next.

Thanks guys I know its not a real good pic, but I'll post some more as soon as I go pick it up.
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Old 03-09-2008, 04:25 AM   #6
kris's66lwb
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Re: New to me

it runs off propane
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Old 03-09-2008, 05:47 AM   #7
72BlckButy
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Re: New to me

What kind of MPG will it get running off of propane? Also what do you have to do to make the swap?
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Old 03-09-2008, 08:19 AM   #8
smirch9
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Re: New to me

Uh It doesn't run off of propane hince it runs on natural gas or cng. The mileage is the same as unleaded with no loss of power unlike a by product like propane.
I purchased a conversion kit off of Ebay that was specific to the year of my truck, the 98. GM factory installed these units in all sorts of years, you just need to do a little digging to find the right one for your vehicle.
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Old 03-09-2008, 08:35 AM   #9
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Re: New to me

looks clean...is it a short bed?
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Old 03-09-2008, 08:45 AM   #10
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Re: New to me

Heres a few more pics. I will be goping up to KC monday to pick it up. It is a LWB.
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Old 03-12-2008, 09:00 PM   #11
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Re: New to me

Well drove it home yesterday from Kansas City and and filled it up in Overland Park. CNG was 1.89 per gge (gallons of gas equilavent) and it took the equilivant of 10 gallons. Drove for 150 miles before it switched to gas so I guess i got about 15 mpg on CNG. Not bad considering I was dring 80-85 mph thw whole way home.
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Old 03-13-2008, 12:23 AM   #12
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Re: New to me

Quote:
Originally Posted by smirch9 View Post
Well drove it home yesterday from Kansas City and and filled it up in Overland Park. CNG was 1.89 per gge (gallons of gas equilavent) and it took the equilivant of 10 gallons. Drove for 150 miles before it switched to gas so I guess i got about 15 mpg on CNG. Not bad considering I was dring 80-85 mph thw whole way home.
So it can run on both regular gasoline and CNG? How do you know when it switches?
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Old 03-13-2008, 12:35 AM   #13
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Re: New to me

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Originally Posted by 67ChevyRedneck View Post
So it can run on both regular gasoline and CNG? How do you know when it switches?
This truck is considered a bi-fuel truck which means it runs on either cng or unleaded gas. It automatically starts on cng if you have fuel, then when you run out of cng while running, it automatically switches over to gas. Its kind of like having two tanks on any truck only it switches itself over and you don't have to. There is a switch inside that you can manually push if you'd like to run on gas, but who would want to if cng is available for .90 gge in Oklahoma compared to 3.00 a gallon for unleaded gasoline?
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Old 03-13-2008, 09:09 AM   #14
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Re: New to me

far out
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Old 04-03-2008, 07:19 AM   #15
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Re: New to me

Nice looking truck. We have a fleet of propane powered pickups and service trucks. We just bought a 3500HD on LPG with a 454 in it as well, mind you it is a '96. I am actually looking for another extend a cab or crew cab Silverado on LPG, if you see something let me know, I am always up for a road trip to pick it up.
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