12-31-2017, 11:14 AM
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#6
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Adding vent to sending unit or charcoal canister
My 71 C-10 had all of this in it factory. I took it out when I did the 305 TPI years ago. I put the tank in the bed and ran vent lines so no need for the canister.
The canister is only to keep the gas smell down when venting.
Found this on the H.A.M.B site
vent line should be 1/4" , and have atleast two large 3" loops in it the loops helps prevent the vapors from coming out as they are heavy and settle in the bottom of it . you can install a electric valve in the vapor line that opens when the ignition is keyed on ( did this for one car ) its a tank switching valve from a chevy 78 k 20 truck it has no vent option as its non emissions ( exempt for time ) also have done vapor canisters from late model vehicles as they are smaller and cheaper new . 4th gen impala works good .
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71
Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour
http://upstategmtrucks.com/
Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!
LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
Last edited by Andy4639; 12-31-2017 at 11:27 AM.
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