The 1947 - Present Chevrolet & GMC Truck Message Board Network
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=4)
-   -   Dual Fuel tank capacity? (https://67-72chevytrucks.com/vboard/showthread.php?t=793189)

Keith Seymore 09-24-2019 07:15 AM
Re: Dual Fuel tank capacity?
 
Quote:
Originally Posted by Factory Guy (Post 8598339)
Seems to me, back in the 70's there was a rule? that stated GM could only put on 39 gallons worth of fuel tanks in any long bed pick up as a MAX capacity?

Maybe somebody can clarify this?
No. I don't remember that.

Plus - Suburban had a 40 gallon tank, in the rear.

K

gmachinz 09-25-2019 09:55 AM
Re: Dual Fuel tank capacity?
 
LOL fuel capacity limits...blah!! I just recently provided a customer with a custom rear chassis harness and control wiring kit to run 2 Pollak selector valves to operate 3 tanks....a 40-gallon rear tank and both 20-gallon saddle tanks in a CC dually! A 502/NV4500 is a thirsty beast!!

DieselSJ 09-25-2019 11:25 AM
Re: Dual Fuel tank capacity?
 
Quote:
Originally Posted by gmachinz (Post 8599105)
LOL fuel capacity limits...blah!! I just recently provided a customer with a custom rear chassis harness and control wiring kit to run 2 Pollak selector valves to operate 3 tanks....a 40-gallon rear tank and both 20-gallon saddle tanks in a CC dually! A 502/NV4500 is a thirsty beast!!
Dang. I need that. Actually now that I'm getting 12mpg with the NV4500 (instead of 9 with the TH400), I think I can live with the 2x20 saddle tanks. But good to know that is an option.

gmachinz 09-25-2019 12:09 PM
Re: Dual Fuel tank capacity?
 
It was a build that required dual Pollak 7-round trailer add-ons as well as a cool mod to the rear markers lights-this required the use of a larger, 1” frame loom and related frame clips w/rosebud clips. Factory style routing and worked out slick!

hatzie 09-25-2019 12:38 PM
Re: Dual Fuel tank capacity?
 
Quote:
Originally Posted by gmachinz (Post 8599165)
It was a build that required dual Pollak 7-round trailer add-ons as well as a cool mod to the rear markers lights-this required the use of a larger, 1” frame loom and related frame clips w/rosebud clips. Factory style routing and worked out slick!
Stake body with the side markers?

biggsteve97 09-28-2019 10:01 AM
Re: Dual Fuel tank capacity?
 
Look underneath at the back of the tank. If there is atleast 8-10 inches from the tank to the front spring hanger then its a 16 gal tank. If there is less than 2" its a 20 gal tank. The replacement 20 gal in my 87 is so close to the front hanger that I had to bend the flange that goes around the seam of the tank just a little to clear the hanger properly.

DieselSJ 09-30-2019 11:25 AM
Re: Dual Fuel tank capacity?
 
Quote:
Originally Posted by biggsteve97 (Post 8600629)
Look underneath at the back of the tank. If there is atleast 8-10 inches from the tank to the front spring hanger then its a 16 gal tank. If there is less than 2" its a 20 gal tank. The replacement 20 gal in my 87 is so close to the front hanger that I had to bend the flange that goes around the seam of the tank just a little to clear the hanger properly.
I don't think this is a reliable method. I have more than 2" between the hanger and the tank and I have 20gal tanks. Maybe because I'm a CC long bed?


All times are GMT -4. The time now is 03:45 AM.
Page 2 of 2 1 2
Show 40 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com