4 point harness for bench seat - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMC Guy · 02-27-2011, 07:47 PM

how hard would it be to make this work? and would it be legal?

3r!c84 · 02-27-2011, 07:51 PM

its safer. but its not legal.

white71chevy · 02-27-2011, 07:55 PM

Y wouldn't that be legal?
Posted via Mobile Device

codydubb · 02-27-2011, 07:56 PM

why not legal?

red rumbler · 02-27-2011, 08:02 PM

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

Dalaigh · 02-27-2011, 08:03 PM

Because the people that make laws are complete idiots

3r!c84 · 02-27-2011, 08:46 PM

they are not DOT approved. but doubt youd get any problems. unless the cop is a as$

**N2TRUX** · 02-27-2011, 08:55 PM

Are you asking if they are street legal, or track legal? Big difference.

3r!c84 · 02-27-2011, 09:00 PM

right ^

Dalaigh · 02-27-2011, 09:03 PM

Schroth makes DOT approved harness.

GMC Guy · 02-27-2011, 09:35 PM

are they legal to use on the street?

Dalaigh · 02-27-2011, 09:52 PM

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.

Dalaigh · 02-27-2011, 10:05 PM

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.

GMC Guy · 02-27-2011, 10:12 PM

Quote:

Originally Posted by Dalaigh

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.

ya they would be going in my 74, which i have shoulder belts in now. came from the factory with lap belts though. i was thinking about welding a bar across the cab behind the upper part of the seat to mount the upper belts. does anyone have any pics or anything?

S10Fan · 02-27-2011, 10:26 PM

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.

1BadSS · 02-27-2011, 10:33 PM

Looks like a good way to windup with a broken back if you get in a wreck.

GMC Guy · 02-27-2011, 10:41 PM

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...

Dalaigh · 02-27-2011, 10:58 PM

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.

GMC Guy · 02-27-2011, 11:07 PM

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

codydubb · 02-27-2011, 11:10 PM

anyone make a pre-fabbed roll cage for squares? whats the typical price tag?

rayfinseats · 03-02-2011, 03:34 AM

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.

rayfinseats · 03-02-2011, 03:39 AM

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.

Option13 · 03-05-2019, 08:12 PM

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?

**mongocanfly** · 03-06-2019, 01:42 AM

I wouldn't fasten a seatbelt to any part of the gas tank structure..

02-27-2011, 07:47 PM	#1
GMC Guy Registered User Join Date: May 2009 Location: Sparks, NV Posts: 913	4 point harness for bench seat how hard would it be to make this work? and would it be legal? Attached Images __________________ Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__ ............._____l __\__ ..............l_(O)_ l___(O)]

02-27-2011, 07:51 PM	#2
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: 4 point harness for bench seat its safer. but its not legal. __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

02-27-2011, 07:55 PM	#3
white71chevy Registered User Join Date: Jun 2010 Location: stigler, oklahoma Posts: 190	Re: 4 point harness for bench seat Y wouldn't that be legal? Posted via Mobile Device __________________ 71 c10 with a 305. new dd wohoo 1956 chevy bel air hard top with a 327. 1998 honda passport V6 old dd.

02-27-2011, 07:56 PM	#4
codydubb Registered User Join Date: Mar 2010 Location: Preston Id Posts: 86	Re: 4 point harness for bench seat why not legal? __________________ 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

02-27-2011, 08:02 PM	#5
red rumbler Registered User Join Date: Oct 2009 Location: stouffville ontario Posts: 166	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

02-27-2011, 08:03 PM	#6
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	Re: 4 point harness for bench seat Because the people that make laws are complete idiots __________________ 2020 Silverado Trail Boss - 6.2/10spd

02-27-2011, 08:46 PM	#7
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: 4 point harness for bench seat they are not DOT approved. but doubt youd get any problems. unless the cop is a as$ __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

02-27-2011, 08:55 PM	#8
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,023	Re: 4 point harness for bench seat Are you asking if they are street legal, or track legal? Big difference. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

02-27-2011, 09:00 PM	#9
3r!c84 Badass Join Date: Jan 2009 Location: lox. fl Posts: 4,586	Re: 4 point harness for bench seat right ^ __________________ Think outside the box? -84c10 (1stcar)→My Build← -00 Saturn 5spd drop a gear and disappear! 1/4:13:90

02-27-2011, 09:03 PM	#10
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	Re: 4 point harness for bench seat Schroth makes DOT approved harness. __________________ 2020 Silverado Trail Boss - 6.2/10spd

02-27-2011, 09:35 PM	#11
GMC Guy Registered User Join Date: May 2009 Location: Sparks, NV Posts: 913	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)]

02-27-2011, 09:52 PM	#12
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	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. __________________ 2020 Silverado Trail Boss - 6.2/10spd Last edited by Dalaigh; 02-27-2011 at 09:53 PM.

02-27-2011, 10:05 PM	#13
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	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. __________________ 2020 Silverado Trail Boss - 6.2/10spd

02-27-2011, 10:26 PM	#15
S10Fan Old Heap Driver Join Date: Mar 2008 Location: Newport News, Va Posts: 2,640	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. __________________ _____________________________ 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.

02-27-2011, 10:33 PM	#16
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	Re: 4 point harness for bench seat Looks like a good way to windup with a broken back if you get in a wreck. __________________ 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	#17
GMC Guy Registered User Join Date: May 2009 Location: Sparks, NV Posts: 913	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... __________________ Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__ ............._____l __\__ ..............l_(O)_ l___(O)]

02-27-2011, 10:58 PM	#18
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	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. __________________ 2020 Silverado Trail Boss - 6.2/10spd

02-27-2011, 11:07 PM	#19
GMC Guy Registered User Join Date: May 2009 Location: Sparks, NV Posts: 913	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)]

02-27-2011, 11:10 PM	#20
codydubb Registered User Join Date: Mar 2010 Location: Preston Id Posts: 86	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

03-02-2011, 03:34 AM	#21
rayfinseats Registered User Join Date: Dec 2010 Location: sioux city, iowa Posts: 619	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.

03-02-2011, 03:39 AM	#22
rayfinseats Registered User Join Date: Dec 2010 Location: sioux city, iowa Posts: 619	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.

03-05-2019, 08:12 PM	#23
Option13 Registered User Join Date: Sep 2015 Location: Phoenix, AZ Posts: 8	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?

03-06-2019, 01:42 AM	#24
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,616	Re: 4 point harness for bench seat I wouldn't fasten a seatbelt to any part of the gas tank structure.. __________________ 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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