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#1 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Pinion angle when lowering the rear
I am going to lower the rear of my truck with 4" coil springs. I have 2" lowering blocks now, which I am going to remove, so I will have 4" lowered total with the springs. Will I need to correct my pinion angle with degree wedges? I used to lift Jeep CJ's a long time ago, and had to use wedges to correct the pinion angle. Thanks for your help.
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#2 |
Under Construction
Join Date: Oct 2007
Location: Midlothian,TX (DFW)
Posts: 4,555
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Re: Pinion angle when lowering the rear
I asked ECE this question when i ordered our drop kit from them (4" rear drop springs) and they stated we would not need to make any adjustments. I would like to know as well. we may go with a 1" or 2" blocks later down the road
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#3 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
Thanks for your input. I may end up putting the blocks back in if it is not lowered enough for me. I wonder if lowering it in the front compensates for having to shim the rear pinion?
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#4 |
Registered User
Join Date: Jan 2002
Location: Henderson, NV
Posts: 358
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Re: Pinion angle when lowering the rear
I have 4" springs and 1" blocks and the angle is ok.
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#5 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
I have 4 inch springs and am in the process of building 2 inch blocks, I hope it doesn't need adjustment.
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#6 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
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#7 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
ya it does fine. I dont have any shims, the rest is stock
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#8 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
Cool...how much are you lowered in the front? I am thinking if I lower it proportionately, it will help keep the pinion angle consistent.
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#9 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
I have 2.5 spindles and 1 inch springs. I am thinking of hacking half a coil out to go with the blocks, making it a 4/6
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#10 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
I have 2.5 spindles in the front, and am wanting to go with 1" springs to lower it just a little more. I was very pleased with the spindles when I put them in last year. I currently have 2" blocks in the rear with stock springs.
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#11 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
I would sell you my front springs (they are brand new) but I cant afford to buy another set, so I have to do with cutting them
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#12 |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
No problem Lucky...I will keep lookin! How is your ride with the 1" drop springs in the front? Do you bottom out at all? I love the spindles because it did not affect my ride quality at all. How about alignment? Did the shop have any trouble aligning it with the lowering springs?
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#13 |
Retired Air Force Veteran
![]() Join Date: Aug 2007
Location: Pembroke Pines, Florida 33024
Posts: 1,808
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Re: Pinion angle when lowering the rear
leddzepp, I have 6 inch rear coils (no c-notch...yet) and my pinion angle is fine. I too, called ECE about this and here's what they told me.
1"-2" use the stock track bar 3"-4" use an adjustable panhard bar 5"-6" us the super track bar This will keep your pinion angle geometrically correct
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#14 | |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
Quote:
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#15 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,970
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Re: Pinion angle when lowering the rear
Quote:
ECE states minimal pinion change w/up to 6" spring drops. Any more than that, you'll want to combine springs & blocks for sure.
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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. |
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#16 |
Registered User
Join Date: Jun 2007
Location: Boca Raton, FL
Posts: 476
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Re: Pinion angle when lowering the rear
Not to hijack, but how about the pinion angle with bags and just a c-notch?
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#17 |
Senior Member
![]() Join Date: Jul 2005
Location: MISSOURI
Posts: 3,256
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Re: Pinion angle when lowering the rear
Not sure may be this would help a little bit
http://www.carcraft.com/howto/91758/index.html
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#18 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
It rides really nice, surprisingly smooth for an old truck. I havent had any problem bottoming out, scraped a header collector on a speed bump at school though.... that was my own fault for driving too fast. I had no problem getting it aligned, the guys at Les Schwab was very helpful and didn't have any trouble getting it on the rack or anything.
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#19 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
great link larry
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#20 |
Registered User
Join Date: Oct 2007
Location: Sherwood Oregon
Posts: 1,908
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Re: Pinion angle when lowering the rear
I have 4 inch springs and will be adding 2 inch blocks, does this count as a 6 inch drop? I don't want to have to buy a super track bar.
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#21 |
Registered User
Join Date: Jul 2000
Location: NC
Posts: 987
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Re: Pinion angle when lowering the rear
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#22 | |
Moderator
![]() Join Date: May 2007
Location: Southern Cal
Posts: 20,005
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Re: Pinion angle when lowering the rear
Quote:
![]() Good info here.
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1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man Last edited by leddzepp; 10-03-2009 at 10:11 AM. |
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#23 |
Registered User
Join Date: Jul 2000
Location: NC
Posts: 987
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Re: Pinion angle when lowering the rear
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