What's this part ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Johnl48** · 02-09-2023, 08:02 AM

There is one of these on each side of my Frame but I don't see a function for it. Any ideas ?

Bigdav160 · 02-09-2023, 08:19 AM

In case the spring breaks, and they do break occasionally, that you don't lose your steering also.

**special-K** · 02-09-2023, 08:57 AM

I've never seen this on both sides, only driver side. The drive side front mount should also have a strap welded across the front

**6t727t2** · 02-09-2023, 12:04 PM

Listing this one now in FS if anyone needs one

**A1971Blazer** · 02-09-2023, 12:20 PM

If you have factory front springs, it's OK to leave this in place.
If you have lift springs it needs to be removed or it will severely limit rearward movement of the spring.
The factory springs have a negative to relatively flat arch to them, when the spring compresses the shackle moves forward,
a lift spring has positive arch so when it compresses, the shackle moves rearward.

**Johnl48** · 02-09-2023, 01:16 PM

Quote:

Originally Posted by A1971Blazer

If you have factory front springs, it's OK to leave this in place.
If you have lift springs it needs to be removed or it will severely limit rearward movement of the spring.
The factory springs have a negative to relatively flat arch to them, when the spring compresses the shackle moves forward,
a lift spring has positive arch so when it compresses, the shackle moves rearward.

Interesting ! I have a 4" lift

**ohboy321** · 02-10-2023, 06:25 AM

Quote:

Originally Posted by A1971Blazer

If you have factory front springs, it's OK to leave this in place.
If you have lift springs it needs to be removed or it will severely limit rearward movement of the spring.
The factory springs have a negative to relatively flat arch to them, when the spring compresses the shackle moves forward,
a lift spring has positive arch so when it compresses, the shackle moves rearward.

My K10 had one on each side with stock springs, and when I installed 2" lift springs I had to remove both because they were hitting.

02-09-2023, 08:02 AM	#1
Johnl48 Senior Member Join Date: Jun 2021 Location: West milford nj Posts: 326	What's this part ? There is one of these on each side of my Frame but I don't see a function for it. Any ideas ?

02-09-2023, 08:19 AM	#2
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: What's this part ? In case the spring breaks, and they do break occasionally, that you don't lose your steering also. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

02-09-2023, 08:57 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: What's this part ? I've never seen this on both sides, only driver side. The drive side front mount should also have a strap welded across the front __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-09-2023, 12:04 PM	#4
6t727t2 Active Member Join Date: Dec 2004 Location: NJ Posts: 6,462	Re: What's this part ? Listing this one now in FS if anyone needs one Attached Images

02-09-2023, 12:20 PM	#5
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,200	Re: What's this part ? If you have factory front springs, it's OK to leave this in place. If you have lift springs it needs to be removed or it will severely limit rearward movement of the spring. The factory springs have a negative to relatively flat arch to them, when the spring compresses the shackle moves forward, a lift spring has positive arch so when it compresses, the shackle moves rearward. __________________ 1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer .............



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