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#1 |
Andy
Join Date: Feb 2009
Location: Cleveland, GA
Posts: 224
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I have a SWB 69 C10 with a 2 piece driveshaft and I am lowering the rear of the truck in a few weeks. I have lowered the front using only 2.5" drop spindles and I plan on using 4" drop coils for the rear along with a shock mount relocation kit, drop shocks and an adjustable trac bar. Will the stock length on the driveshaft work or will it have to be shortened? I tried searching but didn't find any detailed information. I'm sure I will need a new seal for the extension housing on the trans as well since it will be riding on a new location of the yoke after it is lowered.
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1967 Camaro SS 406|522hp/514ft lbs|M20 Muncie|3.73s|Posi 1969 CST/10 383|Aisin AR5 5 speed 1972 K5 350|Turbo 350 4x4 2005 Duramax 2500HD 4x4 |
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#2 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,720
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Re: driveshaft/lowering question
I used 2 1/2" spindles and 2" springs on the front of mine with a leaf spring flip that netted 7" drop in the rear and had no issues with driveshaft length.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#3 |
Registered User
Join Date: Oct 2015
Location: Norwalk, CA
Posts: 114
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Re: driveshaft/lowering question
I dropped my c20 with 2.5 inch spindles and 1 inch drop spring in front and 4 inch drop springs and 1.5 inch drop blocks in back. No issues. Just had to get adjustable track bar.
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#4 |
Registered User
Join Date: Jun 2014
Location: Mocksville, NC
Posts: 1,748
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Re: driveshaft/lowering question
As others have stated, driveshaft length shouldn't be an issue, but I would check pinion angle before and after. I have looked into the pinion angle vs. drop issue on the forum here and most people say theirs is fine even after up to a 6" drop, however, my pinion was off by 4 degrees with only a 4.5" drop and resulted in a vibration at low speeds. Every truck is different of course, so definitely makes sense to at least check it.
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Builds: Green Gus the 68 C10 ; Sullii the 72 1500 - Instagram: @dr.hewitt - C10 Concept/Development Photos: Master Thread |
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#5 |
Andy
Join Date: Feb 2009
Location: Cleveland, GA
Posts: 224
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Re: driveshaft/lowering question
Thanks everyone. I will be sure to check pinion angle before and after.
__________________
1967 Camaro SS 406|522hp/514ft lbs|M20 Muncie|3.73s|Posi 1969 CST/10 383|Aisin AR5 5 speed 1972 K5 350|Turbo 350 4x4 2005 Duramax 2500HD 4x4 |
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#6 |
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: driveshaft/lowering question
If you have a trailing arm truck you should have the light duty carrier bearing.
Unlike the guy with the leaf spring truck that has a hd carrier bearing and a slip in the rear shaft that will compensate for any change in length your rear shaft is solid. I would. Loosen the carrier bearing mounting bolts, set the truck at its new ride height with weight on the suspesion then retighten the bolts to prevent any preload stress on the ld carrier bearing rubber. It wouldn't hurt to clean up that trans yoke either. |
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#7 |
Andy
Join Date: Feb 2009
Location: Cleveland, GA
Posts: 224
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Re: driveshaft/lowering question
Thanks for the advice Brad_Man_72. I'll be sure to do that as well. One other question, how do you adjust the pinion angle on these trucks? On my leaf spring rear in my 67 Camaro I used some angular shims from competition engineering under my leaf springs and those worked great.
__________________
1967 Camaro SS 406|522hp/514ft lbs|M20 Muncie|3.73s|Posi 1969 CST/10 383|Aisin AR5 5 speed 1972 K5 350|Turbo 350 4x4 2005 Duramax 2500HD 4x4 |
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#8 | |
Registered User
Join Date: Jun 2014
Location: Mocksville, NC
Posts: 1,748
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Re: driveshaft/lowering question
Quote:
__________________
Builds: Green Gus the 68 C10 ; Sullii the 72 1500 - Instagram: @dr.hewitt - C10 Concept/Development Photos: Master Thread |
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#9 |
Andy
Join Date: Feb 2009
Location: Cleveland, GA
Posts: 224
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Re: driveshaft/lowering question
Great! Thanks for the information. Where did you purchase yours at?
__________________
1967 Camaro SS 406|522hp/514ft lbs|M20 Muncie|3.73s|Posi 1969 CST/10 383|Aisin AR5 5 speed 1972 K5 350|Turbo 350 4x4 2005 Duramax 2500HD 4x4 |
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#10 |
Registered User
Join Date: Apr 2013
Location: North pickens SC
Posts: 294
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Re: driveshaft/lowering question
Hello anyone have any pic of the lowering set up with Raley wheels
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#11 |
Registered User
![]() Join Date: Nov 2006
Location: KINGSPORT,TN.
Posts: 3,035
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Re: driveshaft/lowering question
I go thru a hanger bearing every year with my lowered 72 lwb. Go with a 1piece drive shaft, you,ll be glad you did
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I BELIEVE IN JOHN 3:16 |
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