pitman arm

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flyin brian

Not-quite-so-new-guy
Jun 13, 2021
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1
1978 malibu just picked up a manual steering box .wondering what pitman arm can i use. or can i use powersteering one thanks
 

1320John$$$

G-Body Guru
Sep 18, 2019
951
2,043
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Pennsylvania
Count the splines on the input shaft and mike it or measure with a tape to give us an idea of its thickness
 

JAMCAR223

Royal Smart Person
Jun 6, 2014
1,853
5,507
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Houston, TX.
IF you had the "small" 605 power steering box on your 78 ( mine did ), then your 605 pitman arm will fit your manual steering box (1" spline diameter). IF you would have upgraded to the "large" 800 power steering box, you would need a different pitman arm (1.2" spline diameter).
 

1320John$$$

G-Body Guru
Sep 18, 2019
951
2,043
93
Pennsylvania
IF you had the "small" 605 power steering box on your 78 ( mine did ), then your 605 pitman arm will fit your manual steering box (1" spline diameter). IF you would have upgraded to the "large" 800 power steering box, you would need a different pitman arm (1.2" spline diameter).
If he has the 525 box he is going to need more then a pitman arm
 

ELCAM

Royal Smart Person
Jun 19, 2021
1,115
1,250
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Is the steering shaft 3/4" with 30 splines?

5679206 is a 60s A body box. Should be a 525 with 25:1 ratio.

Looking at a 72 A and my 79 G the pitman arm looks the same length and offset, don't know about the tapers on the drag (center) link.

The rag joint will also be a different size
 
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