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Thread: Moving rear end back 3/8""?
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01-25-2010 #1
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Moving rear end back 3/8""?
I have a 64 Pontiac with a stock four link suspension. I need to install jam nuts on the Spherical rod joints on my rear control arms. The thru bolt and nut I installed isn't doing the job. However I needed to lengthen all four arms 3/8" to fit the lock nut in, this will set the rear end back 3/8". I don't see any trouble with this but just wanted to check with you guys...
Thanks, Jeff
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01-25-2010 #2
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You'll lose 3/8" of engagement on the trans slip yoke, not sure if that's a big deal or not. Also, your tires won't be centered in the wheel opening...
Nick ~ 1969 Cutlass
01-26-2010 #3
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Hi,
I dont think you will notice a 3/8" setback visually, just check the engagement of your youke as Nick suggested.Have Fun!
André
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01-26-2010 #4
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I'm in the middle of swapping in a Th-400 and I haven't measured for the new shaft yet. So this is right on time... Thanks..
01-26-2010 #5
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Sounds like you need to shorten the control arms.
Matt Jones
Mechanical Engineer
Art Morrison Enterprises
01-26-2010 #6
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OR re-drill your relocation plates OR take some material off of your welded nut and use a thinner locking nut.
vinceMrQuick ΜΟΛ'ΩΝ ΛΑΒ'Ε
01-27-2010 #7
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Besides the above potential issues, going 3/8" longer on the lowers arms without lengthening the uppers the same amount will effect pinion angle also....
Oops, just noticed you are lengthening all 4, nevermind!
Last edited by BMR Tech; 01-27-2010 at 08:41 AM.
01-28-2010 #8
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Thanks guys.... Finished it today. I think I'm going to go over the whole chassis with WD-40 and a rag... Those Currie Johnny Joints stay snug even after 25,000 miles...
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