Rear cab mount shackles 51 AD - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FarmerSid · 06-04-2014, 10:09 AM

Hey all. Got a cab mount kit from LMC and started to rebuild the rear cab mount shackles. The new rubber bushings are smaller in diameter and longer than needed. They fit the studs fine but the OD is too small. Sloppy in the shackle eyelets. The shoulder portion of the new bushing seems too small as well. Almost falls down in the shackle eyelet.

Should I use these or make new ones out of teflon or?

**mr48chev** · 06-04-2014, 10:20 AM

That's not going to work too well. Teflon might be a bit stiff in the rebound department but it should last forever.

FarmerSid · 06-04-2014, 10:41 AM

The teflon isn't going to work very well or the new bushings from LMC? What do you think I should do?

**mr48chev** · 06-04-2014, 10:46 AM

The one's that appear to be too small won't work well. I think I have a set in my stash of stuff I haven't used yet but I never measured mine.

The Teflon will work ok but are going to be pretty solid with no give. What about a sleeve to go around the bushing? First I'd give them a call and see if they got a bad batch or something though.

STOCKISH · 06-04-2014, 01:07 PM

Might not help you Sid, but I got rid of the shackle mounts and made mounts that are similar to the front mounts. Worked great.

FarmerSid · 06-04-2014, 02:16 PM

Hey Josh! Good to hear from ya.

The new bushing measure 1.14" long and 0.822" diam. The shoulder is 0.200 thick and 0.950 in diam. The portion that goes into the shackle is 0.920" long.

MARTINSR · 06-04-2014, 02:26 PM

The bushing gets pushed into the "tube" like hole on the shackle, if they are too long and too thin, aren't they going to get "fattened" when they are smashed as the bolt is tightened?

I rebuilt mine years ago and don't remember but it's common for the tightening of the bolt on something like that to simply "force" the rubber piece to fit properly by smashing it in there.

Brian

FarmerSid · 06-04-2014, 02:55 PM

I did assemble the shackle and the new rubber did squish in the shackle. It seemed tight afterwards. That's why I thought I'd ask on here and see if anyone else experienced this.

Thanks Brian.

STOCKISH · 06-05-2014, 10:32 PM

Hey man, called you tonight but no answer. Give me a call tomorrow if you get a chance. Thanks buddy.

FarmerSid · 06-06-2014, 06:57 AM

I must have been on the phone. I heard a beep indicating an incoming call when I was chatting with a guy that has front fenders for sale. Are you around during the day? I'm off today.

06-04-2014, 10:09 AM	#1
FarmerSid Registered User Join Date: Jan 2012 Location: Eastern Ontario, Canada Posts: 1,041	Rear cab mount shackles 51 AD Hey all. Got a cab mount kit from LMC and started to rebuild the rear cab mount shackles. The new rubber bushings are smaller in diameter and longer than needed. They fit the studs fine but the OD is too small. Sloppy in the shackle eyelets. The shoulder portion of the new bushing seems too small as well. Almost falls down in the shackle eyelet. Should I use these or make new ones out of teflon or? __________________ 1952 Canadian Chevy 1300 C4 IFS & D44 IRS 5.3 HO L33 My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=632938

06-04-2014, 10:20 AM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Rear cab mount shackles 51 AD That's not going to work too well. Teflon might be a bit stiff in the rebound department but it should last forever. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

06-04-2014, 10:41 AM	#3
FarmerSid Registered User Join Date: Jan 2012 Location: Eastern Ontario, Canada Posts: 1,041	Re: Rear cab mount shackles 51 AD The teflon isn't going to work very well or the new bushings from LMC? What do you think I should do? __________________ 1952 Canadian Chevy 1300 C4 IFS & D44 IRS 5.3 HO L33 My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=632938

06-04-2014, 10:46 AM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,705	Re: Rear cab mount shackles 51 AD The one's that appear to be too small won't work well. I think I have a set in my stash of stuff I haven't used yet but I never measured mine. The Teflon will work ok but are going to be pretty solid with no give. What about a sleeve to go around the bushing? First I'd give them a call and see if they got a bad batch or something though. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

06-04-2014, 01:07 PM	#5
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: Rear cab mount shackles 51 AD Might not help you Sid, but I got rid of the shackle mounts and made mounts that are similar to the front mounts. Worked great. __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

06-04-2014, 02:16 PM	#6
FarmerSid Registered User Join Date: Jan 2012 Location: Eastern Ontario, Canada Posts: 1,041	Re: Rear cab mount shackles 51 AD Hey Josh! Good to hear from ya. The new bushing measure 1.14" long and 0.822" diam. The shoulder is 0.200 thick and 0.950 in diam. The portion that goes into the shackle is 0.920" long. __________________ 1952 Canadian Chevy 1300 C4 IFS & D44 IRS 5.3 HO L33 My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=632938

06-04-2014, 02:26 PM	#7
MARTINSR Registered User Join Date: Dec 2000 Location: Boise, Idaho Posts: 6,003	Re: Rear cab mount shackles 51 AD The bushing gets pushed into the "tube" like hole on the shackle, if they are too long and too thin, aren't they going to get "fattened" when they are smashed as the bolt is tightened? I rebuilt mine years ago and don't remember but it's common for the tightening of the bolt on something like that to simply "force" the rubber piece to fit properly by smashing it in there. Brian __________________ 1948 Chevy pickup Chopped, Sectioned, 1953 Corvette 235 powered. Once was even 401 Buick mid engined with the carburetor right between the seats! Bought with paper route money in 1973 when I was 15. "Fan of most anything that moves human beings"

06-04-2014, 02:55 PM	#8
FarmerSid Registered User Join Date: Jan 2012 Location: Eastern Ontario, Canada Posts: 1,041	Re: Rear cab mount shackles 51 AD I did assemble the shackle and the new rubber did squish in the shackle. It seemed tight afterwards. That's why I thought I'd ask on here and see if anyone else experienced this. Thanks Brian. __________________ 1952 Canadian Chevy 1300 C4 IFS & D44 IRS 5.3 HO L33 My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=632938

06-05-2014, 10:32 PM	#9
STOCKISH Formerly- 1972SuperCheyenne Join Date: Oct 2008 Location: Wake Forest NC Posts: 5,782	Re: Rear cab mount shackles 51 AD Hey man, called you tonight but no answer. Give me a call tomorrow if you get a chance. Thanks buddy. __________________ --Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with.

06-06-2014, 06:57 AM	#10
FarmerSid Registered User Join Date: Jan 2012 Location: Eastern Ontario, Canada Posts: 1,041	Re: Rear cab mount shackles 51 AD I must have been on the phone. I heard a beep indicating an incoming call when I was chatting with a guy that has front fenders for sale. Are you around during the day? I'm off today. __________________ 1952 Canadian Chevy 1300 C4 IFS & D44 IRS 5.3 HO L33 My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=632938



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