LMC shoulder strap seat belt installation - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cjoenny89 · 09-20-2016, 02:18 PM

Has anyone installed the LMC shoulder strap seat belt kits? I would like to know if anyone has done it with out drilling any extra holes in the floor? The installation instructions are terrible! we replaced the old lap belts and I can not for the life of me figure out how to get the bottoms installed with out drilling an extra hole in the cab. if anyone has pictures of what they did I would appreciate it very much!

everettelane · 09-20-2016, 09:17 PM

Quote:

Originally Posted by cjoenny89

Has anyone installed the LMC shoulder strap seat belt kits? I would like to know if anyone has done it with out drilling any extra holes in the floor? The installation instructions are terrible! we replaced the old lap belts and I can not for the life of me figure out how to get the bottoms installed with out drilling an extra hole in the cab. if anyone has pictures of what they did I would appreciate it very much!

I have purchased the shoulder straps from LMC also haven't installed yet but curious since you brought it up.

davepl · 09-20-2016, 09:19 PM

You need an extra hole, no way around it. I opted to drill mine through the seat brace in the floor, since it is heavily reinforced, and used large washers so it wouldn't pull through.

There are multiple threads on this already... I searched and found the one with photos and so here:

http://67-72chevytrucks.com/vboard/s...ill+hole+brace

I'm not an expert, not an engineer, and I doubt this would pass DOT regs.... emulate at your own risk!

sangell · 09-21-2016, 03:00 PM

I have a set also that I have yet to install but does the anchor side of the lap belt not attach to the same hole/bolt at the top of the "L" bracket that the retractor uses?

cjoenny89 · 09-21-2016, 03:34 PM

If you can get it to work send me pics

sangell · 09-21-2016, 03:38 PM

Quote:

Originally Posted by cjoenny89

If you can get it to work send me pics

Well this doesn't instill much confidence, at least I know now going it there will be an issue. I'll look into in and let you know.

cjoenny89 · 09-21-2016, 06:01 PM

I am about ready to look at it all again!

ripper70 · 09-21-2016, 09:43 PM

I just got done with mine and getting ready to post on my build thread..here is a pic. I did use the L bracket and bent it a little bit.

ripper70 · 09-21-2016, 09:45 PM

well the 1 on the right is crap pic. Should of looked at it but 1st one should be all you need.

cjoenny89 · 09-22-2016, 06:12 AM

The first pic is of the passenger side? How did the driver side go with the gas tank right in the way?

ripper70 · 09-22-2016, 03:08 PM

I do not have a factory tank so that could be an issue

cjoenny89 · 09-22-2016, 04:26 PM

If you don't have the tank behind the seat it is going to help big time on the drivers side

**Dieselwrencher** · 09-22-2016, 04:49 PM

On mine, I didn't get them from LMC. I used the factory seat belt retractor bolt hole. I added a 90* bracket that was included in my kit. I placed it under my retractor and secured it with a grade 12 frame bolt and then added another nut to the bottom side. I attached the other part of the shoulder belt to the 90* bracket. I might change it because I need some more room in the seat belt. My seat sets up pretty high so with the seat belt on, you don't have much room to move forward and it is annoying.

**Corts60** · 07-23-2020, 06:59 PM

Any update on this? Is this the right way to do it?

Thanks!

dz1087 · 07-24-2020, 09:52 AM

I took a high speed step bit and bored out the existing seat belt hole in the floor large enough to put the bolt that came with the kit through it. Worked well. I drilled entirely new holes for the receptacle side.

One thing I don't like about it is that with the seat back all the way, the receptacle is a little long and as such, the lap portion rides a little high. Makes me suspect that submarining would be an issue in a crash, negating the benefits of the shoulder belt. I also don't like how slowly you have to pull out the belt to prevent the mechanism from catching and locking up.

09-20-2016, 02:18 PM	#1
cjoenny89 Registered User Join Date: Apr 2015 Location: St. Charles, Michigan Posts: 214	LMC shoulder strap seat belt installation Has anyone installed the LMC shoulder strap seat belt kits? I would like to know if anyone has done it with out drilling any extra holes in the floor? The installation instructions are terrible! we replaced the old lap belts and I can not for the life of me figure out how to get the bottoms installed with out drilling an extra hole in the cab. if anyone has pictures of what they did I would appreciate it very much!

09-20-2016, 09:19 PM	#3
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: LMC shoulder strap seat belt installation You need an extra hole, no way around it. I opted to drill mine through the seat brace in the floor, since it is heavily reinforced, and used large washers so it wouldn't pull through. There are multiple threads on this already... I searched and found the one with photos and so here: http://67-72chevytrucks.com/vboard/s...ill+hole+brace I'm not an expert, not an engineer, and I doubt this would pass DOT regs.... emulate at your own risk! __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

09-21-2016, 03:00 PM	#4
sangell Registered User Join Date: Jun 2015 Location: Overland Park KS Posts: 173	Re: LMC shoulder strap seat belt installation I have a set also that I have yet to install but does the anchor side of the lap belt not attach to the same hole/bolt at the top of the "L" bracket that the retractor uses?

09-21-2016, 03:34 PM	#5
cjoenny89 Registered User Join Date: Apr 2015 Location: St. Charles, Michigan Posts: 214	Re: LMC shoulder strap seat belt installation If you can get it to work send me pics

09-21-2016, 06:01 PM	#7
cjoenny89 Registered User Join Date: Apr 2015 Location: St. Charles, Michigan Posts: 214	Re: LMC shoulder strap seat belt installation I am about ready to look at it all again!

09-21-2016, 09:43 PM	#8
ripper70 Registered User Join Date: Oct 2009 Location: Lincoln City Oregon Posts: 173	Re: LMC shoulder strap seat belt installation I just got done with mine and getting ready to post on my build thread..here is a pic. I did use the L bracket and bent it a little bit. Attached Images __________________ 1970 K20 1967 Blown Stepside 2016 Chevy 2500 Duramax 1989 Jeep Cherokee 1995 S-10 2014 Infinity Q-50 AWD 1970 Chevy K20 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=634164 1967 stepside rebuild http://67-72chevytrucks.com/vboard/s...d.php?t=684913 Shop build http://www.garagejournal.com/forum/s...d.php?t=225559

09-21-2016, 09:45 PM	#9
ripper70 Registered User Join Date: Oct 2009 Location: Lincoln City Oregon Posts: 173	Re: LMC shoulder strap seat belt installation well the 1 on the right is crap pic. Should of looked at it but 1st one should be all you need. __________________ 1970 K20 1967 Blown Stepside 2016 Chevy 2500 Duramax 1989 Jeep Cherokee 1995 S-10 2014 Infinity Q-50 AWD 1970 Chevy K20 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=634164 1967 stepside rebuild http://67-72chevytrucks.com/vboard/s...d.php?t=684913 Shop build http://www.garagejournal.com/forum/s...d.php?t=225559

09-22-2016, 06:12 AM	#10
cjoenny89 Registered User Join Date: Apr 2015 Location: St. Charles, Michigan Posts: 214	Re: LMC shoulder strap seat belt installation The first pic is of the passenger side? How did the driver side go with the gas tank right in the way?

09-22-2016, 03:08 PM	#11
ripper70 Registered User Join Date: Oct 2009 Location: Lincoln City Oregon Posts: 173	Re: LMC shoulder strap seat belt installation I do not have a factory tank so that could be an issue __________________ 1970 K20 1967 Blown Stepside 2016 Chevy 2500 Duramax 1989 Jeep Cherokee 1995 S-10 2014 Infinity Q-50 AWD 1970 Chevy K20 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=634164 1967 stepside rebuild http://67-72chevytrucks.com/vboard/s...d.php?t=684913 Shop build http://www.garagejournal.com/forum/s...d.php?t=225559

09-22-2016, 04:26 PM	#12
cjoenny89 Registered User Join Date: Apr 2015 Location: St. Charles, Michigan Posts: 214	Re: LMC shoulder strap seat belt installation If you don't have the tank behind the seat it is going to help big time on the drivers side

09-22-2016, 04:49 PM	#13
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: LMC shoulder strap seat belt installation On mine, I didn't get them from LMC. I used the factory seat belt retractor bolt hole. I added a 90* bracket that was included in my kit. I placed it under my retractor and secured it with a grade 12 frame bolt and then added another nut to the bottom side. I attached the other part of the shoulder belt to the 90* bracket. I might change it because I need some more room in the seat belt. My seat sets up pretty high so with the seat belt on, you don't have much room to move forward and it is annoying. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

07-23-2020, 06:59 PM	#14
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: LMC shoulder strap seat belt installation Any update on this? Is this the right way to do it? Thanks! __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

07-24-2020, 09:52 AM	#15
dz1087 Registered User Join Date: Feb 2019 Location: Navarre, Florida Posts: 199	Re: LMC shoulder strap seat belt installation I took a high speed step bit and bored out the existing seat belt hole in the floor large enough to put the bolt that came with the kit through it. Worked well. I drilled entirely new holes for the receptacle side. One thing I don't like about it is that with the seat back all the way, the receptacle is a little long and as such, the lap portion rides a little high. Makes me suspect that submarining would be an issue in a crash, negating the benefits of the shoulder belt. I also don't like how slowly you have to pull out the belt to prevent the mechanism from catching and locking up.



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