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02-27-2011, 07:47 PM
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#1 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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4 point harness for bench seat
how hard would it be to make this work? and would it be legal?
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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02-27-2011, 07:55 PM
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#3 |
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Registered User
Join Date: Jun 2010
Location: stigler, oklahoma
Posts: 190
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Re: 4 point harness for bench seat
Y wouldn't that be legal?
Posted via Mobile Device
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71 c10 with a 305. new dd wohoo 1956 chevy bel air hard top with a 327. 1998 honda passport V6 old dd. |
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02-27-2011, 07:56 PM
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#4 |
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Registered User
Join Date: Mar 2010
Location: Preston Id
Posts: 86
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Re: 4 point harness for bench seat
why not legal?
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1985 Chevy C10  350 .60 over iron eagle h-beam rods, sealed power high comp pistons, forged crank, vortec heads, edelbrock performer rpm vortec intake, roller rockers, .488 .510 cam 750 Demon Double Pumper, Longtube headers, Dual Flowmaster exhaust,Dual electric fans, Proform electric water pump. TCI 3500 Stall Converter th350 trans B&M shift kit 10 bolt 3.73 Detroit Locker |
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02-27-2011, 08:02 PM
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#5 |
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Registered User
Join Date: Oct 2009
Location: stouffville ontario
Posts: 166
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Re: 4 point harness for bench seat
was gonna say ya that should be legal. the only thing you need is a bar running across the back of the cab behind the seat to attach the shoulder straps too and you also need to weld new tabs for the lap belts
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02-27-2011, 08:03 PM
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#6 |
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Canadian Trucker
Join Date: Nov 2010
Location: Sarnia, ont canada
Posts: 648
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Re: 4 point harness for bench seat
Because the people that make laws are complete idiots
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 2020 Silverado Trail Boss - 6.2/10spd |
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02-27-2011, 08:46 PM
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#7 |
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Badass
Join Date: Jan 2009
Location: lox. fl
Posts: 4,586
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Re: 4 point harness for bench seat
they are not DOT approved. but doubt youd get any problems. unless the cop is a as$
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Think outside the box? -84c10 (1stcar)→My Build←  -00 Saturn 5spd drop a gear and disappear! 1/4:13:90 
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02-27-2011, 08:55 PM
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#8 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,021
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Re: 4 point harness for bench seat
Are you asking if they are street legal, or track legal? Big difference.
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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02-27-2011, 09:03 PM
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#10 |
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Canadian Trucker
Join Date: Nov 2010
Location: Sarnia, ont canada
Posts: 648
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Re: 4 point harness for bench seat
Schroth makes DOT approved harness.
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2020 Silverado Trail Boss - 6.2/10spd |
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02-27-2011, 09:35 PM
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#11 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: 4 point harness for bench seat
are they legal to use on the street?
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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02-27-2011, 09:52 PM
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#12 |
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Canadian Trucker
Join Date: Nov 2010
Location: Sarnia, ont canada
Posts: 648
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Re: 4 point harness for bench seat
Thats were it gets tricky, The harness may be legal, but the DOT won't appprove the way it gets mounted, they want the harness mounted to the factory points with the factory hardware, but the 4 point won't work that way. Even if you put a rollcage in to mount it off of, they won't approve because they don't understand that the rollcage is stronger then the factory mounting points. Well, I say they don't understand, but its more likely they can't prove that the roll cage installed was done properly so they won't approve it. Thats the problem when you get people that don't care to see past factory, like the DOT. If you had people in there that understand vehicles and what we do to them them, life would be so much better, because they would know that what the majorty of us do to your vehicles, only improves the safety and reliability to our vehicles.
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2020 Silverado Trail Boss - 6.2/10spd Last edited by Dalaigh; 02-27-2011 at 09:53 PM. |
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02-27-2011, 10:05 PM
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#13 |
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Canadian Trucker
Join Date: Nov 2010
Location: Sarnia, ont canada
Posts: 648
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Re: 4 point harness for bench seat
GMC Guy, are these for the 74 in your sig? If so them I wouldn't worry, about DOT approved mounting. Just find a DOT approved harness and go. Your truck is a 74 so it likely came with factory lap belts. As long as you use the factory mounts they shouldn't bother you. You will just need to find away to mount the upper belts so the connect to there support at shoulder height.
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2020 Silverado Trail Boss - 6.2/10spd |
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02-27-2011, 10:12 PM
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#14 | |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: 4 point harness for bench seat
Quote:
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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02-27-2011, 10:26 PM
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#15 |
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Old Heap Driver
Join Date: Mar 2008
Location: Newport News, Va
Posts: 2,642
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Re: 4 point harness for bench seat
Before you do anything I'd speak with the "Tech Department" for whatever brand of belt you're considering. There are ways to safely install racing type belts in a street car/truck. Let the manufacturer give you advice for their particular brand of belts.
As for welding a bar across behind the seat, it isn't that simple. The bar needs to be part of a properly designed roll cage. Welding a thick wall bar to sheet metal is a bad idea.
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_____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver. |
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02-27-2011, 10:33 PM
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#16 |
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NOT REALLY BANNED!
 
Join Date: Jul 2004
Location: Shawnee, KS
Posts: 1,072
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Re: 4 point harness for bench seat
Looks like a good way to windup with a broken back if you get in a wreck.
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1987 Mustang Coupe - 2.7 Stroker, 78mm turbo, Stainless header, 3" Exh, FMIC, 160lb/hr Injectors, MS3, twin walbro 255's, 34psi. Eating V8's daily. 04 Pontiac GTO 04 Ford Mustang GT 68 C20 LWB stripper truck 73 K5 Cheyenne 76 C20 Sierra Crew SRW 88 K20 Suburban I'm not hammering on metal just to hammer, i'm creating a piece of art. |
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02-27-2011, 10:41 PM
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#17 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: 4 point harness for bench seat
that makes sense actually. are there any other ways to mount it without a full blown roll cage? i'd really like to know how the guy set up his in the picture above...
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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02-27-2011, 10:58 PM
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#18 |
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Canadian Trucker
Join Date: Nov 2010
Location: Sarnia, ont canada
Posts: 648
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Re: 4 point harness for bench seat
My guess is the way the harness is set up in that pics is wrong. He probably mounted the upper belts to the floor behind him, which is typically a bad idea, because if you are ever in an accident the upper belts will pull back and down compressing your spine in a very uncomfortable and harming way. The best way is a cage, but you can get away with just a main hoop, mid bar and two forward bars like this pic
 Some peope may say you can get away with just the main hoop and mid bar, but they're wrong. You need something to stop the bar from collapsing forward or backward in the event of a roll over.
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2020 Silverado Trail Boss - 6.2/10spd |
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02-27-2011, 11:07 PM
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#19 |
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Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: 4 point harness for bench seat
hmmm, thanks for the imput. i might just have to keep looking for some buckets then....
 just would really like some side support to keep me planted around turns. the truck stays stuck to the ground but me and a passenger go side to side lol
__________________
Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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02-27-2011, 11:10 PM
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#20 |
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Registered User
Join Date: Mar 2010
Location: Preston Id
Posts: 86
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Re: 4 point harness for bench seat
anyone make a pre-fabbed roll cage for squares? whats the typical price tag?
__________________
1985 Chevy C10 350 .60 over iron eagle h-beam rods, sealed power high comp pistons, forged crank, vortec heads, edelbrock performer rpm vortec intake, roller rockers, .488 .510 cam 750 Demon Double Pumper, Longtube headers, Dual Flowmaster exhaust,Dual electric fans, Proform electric water pump. TCI 3500 Stall Converter th350 trans B&M shift kit 10 bolt 3.73 Detroit Locker |
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03-02-2011, 03:34 AM
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#21 |
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Registered User
Join Date: Dec 2010
Location: sioux city, iowa
Posts: 619
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Re: 4 point harness for bench seat
anyone make a pre-fabbed roll cage for squares? whats the typical price tag?
Jegs. 200-$300 Not sure about legallity in your state. WHY would you want those belts without a roll bar? They would be a pain in the ass for short trips to the grocery store.I am gonna run plastic racing seats in my street truck. Not sure yet about seat belt type or roll cage. |
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03-02-2011, 03:39 AM
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#22 |
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Registered User
Join Date: Dec 2010
Location: sioux city, iowa
Posts: 619
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Re: 4 point harness for bench seat
Jegs does.
Why run those belts on the street? Not sure what I'm going to use yet. I may run a cage, I may keep the factory belts. Not sure yet. 
Last edited by rayfinseats; 03-02-2011 at 03:40 AM. |
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03-05-2019, 08:12 PM
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#23 |
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Registered User
Join Date: Sep 2015
Location: Phoenix, AZ
Posts: 8
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Re: 4 point harness for bench seat
Reviving this thread because I am interested in this as well. Since the gas tank has bolt mounts on the top and bottom, could you use the top gas tank mounts for the upper harness?
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03-06-2019, 01:42 AM
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#24 |
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Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 14,671
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Re: 4 point harness for bench seat
I wouldn't fasten a seatbelt to any part of the gas tank structure..
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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