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10-23-2013, 02:24 AM | #1 |
Registered User
Join Date: Oct 2013
Location: marquette mi
Posts: 6
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72 crossmember
Has anyone flipped the trailing arm mounts to get the correct pinion angle after a 4.5/5 drop.
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10-23-2013, 08:14 AM | #2 |
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Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,025
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Re: 72 crossmember
Yes, people have flipped them. It's not really necessary w/just a 5" drop.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
10-23-2013, 08:52 AM | #3 |
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Join Date: Oct 2013
Location: marquette mi
Posts: 6
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Re: 72 crossmember
Ok if its not necessary to flip the brackets what is the needed pinion angle to have so the u joints don't bind. I know I will hear them if they are binding but I want to get it right before driving it at all
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10-23-2013, 09:08 AM | #4 |
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Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,025
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Re: 72 crossmember
I had a swb 68 w/bags (no mounting brackets) & 1.5" blocks which equalled approx 8" of rear drop & had no u-joint issues. I also didn't have an OD trans so it's possible it might be more noticed with one.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
10-23-2013, 09:28 AM | #5 |
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Join Date: Oct 2013
Location: marquette mi
Posts: 6
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Re: 72 crossmember
Ok that sounds good like I won't have to make any changes. Although I have already taken the brackets off reattaching them with grade 8 bolts will be easy and if a issue arises it will be easy to fix. Thanks
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10-23-2013, 09:30 AM | #6 |
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Join Date: Oct 2013
Location: marquette mi
Posts: 6
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Re: 72 crossmember
I did forget to mention I have 72 lwb if that makes any difference with the 2 piece driveshaft
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10-23-2013, 09:34 AM | #7 |
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Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,025
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Re: 72 crossmember
It's possible w/the 2pc as mine was a swb w/1pc shaft. Try it as it came 1st. If it feels shaky, flip them & see if you feel improvement.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
10-23-2013, 03:47 PM | #8 |
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Join Date: May 2009
Location: wichita ks
Posts: 100
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Re: 72 crossmember
My ol 72 long bed had a 7 inch rear drop with a 2 peice drive shaft and I didnt have any binding issues. I did go through carrier bearing about once every 18months so if there were any pinion issues the carrier bearing paid the price but I never noticed anything odd until my bearing would let lose and when that happens it will scare the crap out of you...lol
On my bagged 68 I did flip the carrier bearing mount 180degrees and re mounted to get a better pinion angle. If you go this route its not to bad and only takes a few hrs with my cave man tools |
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