Reason behind extra tanks? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JCD · 03-20-2016, 04:07 PM

Quote:

Originally Posted by 57taskforce

Driver side is indeed factory my K/20 has the nl2 tank option as well. That's a hell of a spid by the way, comfortilt, plaid bench,A/C,camper options, etc. that's a nicely optioned truck.

Thanks.. I got it for a steal of a price too.
When I got it home and was able to discover it more, I found it had a few additions that led me to believe it may have been a forestry truck.

But the siren was the main give away.

J.

volksworld · 03-20-2016, 04:16 PM

i'm from long island originally too...sure there were plenty of stations but in the early 70's almost all were 2-bay repair shops that also sold gas....and they closed early...if we needed gas after midnight there was only one station on the parkway that was open and it wasnt cheap....you have to see if the siren is hot wired to a dash knob or tied to door switches cause "on guard" brand car alarms used the same siren...my 69 camaro had one

JCD · 03-21-2016, 12:54 AM

Quote:

Originally Posted by volksworld

....you have to see if the siren is hot wired to a dash knob or tied to door switches cause "on guard" brand car alarms used the same siren...my 69 camaro had one

The siren was wired to the horn button.
It's not a newer siren, as it sounds like the typical siren of the 60s 70s.
A slow gyrating wail.

I believe sirens on street cars is illegal.
I didn't remove it, but I did rewire the horn to work normally.

J.

**special-K** · 03-21-2016, 05:49 AM

Quote:

Originally Posted by special-K

All that type of tank/filler are aftermarket. Back East you didn't see these added tanks

Quote:

Originally Posted by frenchy51

How can it be aftermarket when his SPID shows an aux. tank option? And which xtra tank is "correct"? The driver or Pass. side?
I ask because my 72 Highlander has 2 xtra tanks both with aluminum locking doors. They don't show on the SPID so I assume they are aftermarket but what does the factory xtra tank filler look like? Thanks

That is the factory aux. tank on the driver side. I meant the tanks with that type of filler (doors).

**Papa Smurf** · 03-23-2016, 10:33 AM

I have a 72 C20 with the factory tank on the driver side. Not only was the tank factory, there is a switch in the instrument panel that changed the gauge from one tank to the other.

03-20-2016, 04:16 PM	#27
volksworld Registered User Join Date: Apr 2011 Location: formerly NY currentlyNC Posts: 390	Re: Reason behind extra tanks? i'm from long island originally too...sure there were plenty of stations but in the early 70's almost all were 2-bay repair shops that also sold gas....and they closed early...if we needed gas after midnight there was only one station on the parkway that was open and it wasnt cheap....you have to see if the siren is hot wired to a dash knob or tied to door switches cause "on guard" brand car alarms used the same siren...my 69 camaro had one __________________ 1970 short step c10 leaf spring 454 Last edited by volksworld; 03-20-2016 at 04:23 PM.

03-23-2016, 10:33 AM	#30
Papa Smurf Active Member Join Date: Feb 2009 Location: Ben Wheeler, TX Posts: 120	Re: Reason behind extra tanks? I have a 72 C20 with the factory tank on the driver side. Not only was the tank factory, there is a switch in the instrument panel that changed the gauge from one tank to the other. __________________ 72 Sierra Grande 2500 BB 72 Sierra 2500, 42K miles, factory buckets 72 Cheyenne 20 72 Chevy SWB, Factory BB, Leaf Spring

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