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Old 08-13-2024, 04:44 PM   #1
leegreen
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Re: Front Front shackles 1959

don't discount the impact 5-10 PSI tire pressure change can have on highway handling, I have had a couple 4x4s that were much happier at 30-32 PSI than 36-38 PSI. And others where it did not seem to impact driving at all. Maybe tire dependent, but it is on my list of things to play with when something is not driving well for no more obvious reason
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Old 08-15-2024, 01:25 PM   #2
dennislbrooks
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Re: Front Front shackles 1959

Ok, I straightened up the front ball joint on the draglink. I run 215/85x16 tires and reduced them all 5 lbs to 34 - also to soften the ride.

I gave the collar 3/4 turn -in- on the center link from the alignment shops zero.
I do not know what this equates to in inches.

Drives much better. Almost as good as my 67 -it has 265/70x17 tires on it.
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Old 08-15-2024, 03:45 PM   #3
leegreen
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Re: Front Front shackles 1959

that's great! and no need to reverse your shackles.
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Old 08-15-2024, 07:40 PM   #4
dennislbrooks
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Re: Front Front shackles 1959

Looks like no changing the shackles. I will turn the collar 3/4 more toe in just to see and will report back. Will still be less than 1/4 inch. The 59 has an 85 K10 front axle and the 67 has the same axle but from an 88 K5.


Total 1.5 turns more toe and the former addition of the sway bar gave me favorable results.
I am satisfied and thanks for the help leegreen.
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Last edited by dennislbrooks; 08-29-2024 at 06:54 AM.
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Old 08-29-2024, 07:07 AM   #5
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Re: Front Front shackles 1959

Changed wheels and tires.
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Old 09-03-2024, 12:55 PM   #6
leegreen
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Re: Front Front shackles 1959

looks good. any difference in drivability between the old and new tires?
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Old 09-04-2024, 07:59 AM   #7
dennislbrooks
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Re: Front Front shackles 1959

Yea, but the 265x70R17s were almost as ok. But I want my tires inside the fenders. Also I wanted full right turn (front are spaced out 2 inches to clear pitman arm/draglink joint). Rear is spaced accordingly. I run 265x70R17s on my 67 with no issues.

Since this is my thread I can take where I want. I like the stock 59 hubcaps which the 58-59 GMCs are a little scarce (55-57 GMCs are a little hard to find also). And I wanted them on the 88-98 rally wheels. I finally conquered this. I do run 59 GMC caps on back and spare but have a 55-57 chevy with center removed on the left front. The cap was bent severely at the emblem so I did not mind cutting it. My other caps are too good to cut and I refrain also from cutting any GMC cap. I will find a suitable cap for cutting sometime.

It is a real GMC Fleet but not a real NAPCO just a 4wd.
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Last edited by dennislbrooks; 09-04-2024 at 08:03 AM. Reason: words
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