79 Fuel tank questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

J/D/S · 02-22-2011, 03:31 AM

What gallon capacity fuel tanks came on a dual fuel tank truck? Also whats the biggest dual tanks I can put on a 79 in the stock locations. Changing out the tanks location is not an option.

thanks guys

madcow75 · 02-22-2011, 08:52 AM

They only made 2 different size saddle tanks 16 and 20 gallon tanks. I am sure if you allready have dual tanks you have the 20 gallon tanks. 20 gallon tanks were put on longbeds and 16 on shotbeds. 16 gallon measuring 42 1/4" long and 20 gallong measuring 56" long.

willstruck · 02-22-2011, 03:06 PM

Quote:

Originally Posted by madcow75

They only made 2 different size saddle tanks 16 and 20 gallon tanks. I am sure if you allready have dual tanks you have the 20 gallon tanks. 20 gallon tanks were put on longbeds and 16 on shotbeds. 16 gallon measuring 42 1/4" long and 20 gallong measuring 56" long.

According to LMC, some longbeds actually had 16 gallon tanks, not sure the years. But, my 85 longbed has dual 16 gallon tanks. One leaks, so a single 16 gallon tank on a truck that gets 12mpg really sucks. I bet if you search, you can find a company that makes larger tanks that fit in the stock location. The tanks are so straightforward, I might just make new tanks. I can do it for cheaper than a stock replacement would cost.

Benelli · 02-22-2011, 04:18 PM

You can swap over to Blazer or Suburban tanks and I believe them hold as much as 32 or 36 gallons.

I think you can also rig up some mounts and staps to use the 89-98 tanks.

madcow75 · 02-22-2011, 05:41 PM

Suburban tanks are 25, 31, and 40 gallon. 25 and a 31 gallon fit in a truck but you need to modify to fit it behind rear axle between frame rails.

02-22-2011, 03:31 AM	#1
J/D/S Registered User Join Date: Jan 2008 Location: Fort Campbell KY Posts: 271	79 Fuel tank questions What gallon capacity fuel tanks came on a dual fuel tank truck? Also whats the biggest dual tanks I can put on a 79 in the stock locations. Changing out the tanks location is not an option. thanks guys __________________ John Bernard Books (The Shootist): "I won't be wronged, I won't be insulted, and I won't be laid a hand on. I don't do these things to other people and I expect the same from them."

02-22-2011, 08:52 AM	#2
madcow75 Registered User Join Date: Jun 2009 Location: Fort Erie , Ontario Posts: 525	Re: 79 Fuel tank questions They only made 2 different size saddle tanks 16 and 20 gallon tanks. I am sure if you allready have dual tanks you have the 20 gallon tanks. 20 gallon tanks were put on longbeds and 16 on shotbeds. 16 gallon measuring 42 1/4" long and 20 gallong measuring 56" long.

02-22-2011, 04:18 PM	#4
Benelli Watchin the rust grow Join Date: Oct 2008 Location: Western Nebraska Posts: 950	Re: 79 Fuel tank questions You can swap over to Blazer or Suburban tanks and I believe them hold as much as 32 or 36 gallons. I think you can also rig up some mounts and staps to use the 89-98 tanks. __________________ 1979 Chevy K10 (H/D Front end) - 350 w/ Holley Truck Avenger, Weinald Intake manifold, headers, bored .060 over, mild cam, Built up TH350 (TranStar Shift kit) with a part-timed NP203 t-case SOLD ($3,000) 1997 Chevy Silverado 1500 - 4.3 vortec, extended cab, 21 highway MPG, stock. "Red" SOLD ($3,000) 1987 Toyota 4wd Pick-up - work in progress, future DD SOLD ($1,850) 1998 Dodge Ram 2500 Cummins 5spd Quad cab - old 12 valve with some work done 2004 Chevy Silverado - Black, 4x4, 5.3L, stock for now Underneath that rust is a heart of gold

02-22-2011, 05:41 PM	#5
madcow75 Registered User Join Date: Jun 2009 Location: Fort Erie , Ontario Posts: 525	Re: 79 Fuel tank questions Suburban tanks are 25, 31, and 40 gallon. 25 and a 31 gallon fit in a truck but you need to modify to fit it behind rear axle between frame rails.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.