Big block A body pitman arm

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superbirdrag

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Hi
Does anyone know the actual difference from a slant 6 pitman arm to a 383 big block pitman arm . I bought the PST 383 pitman arm and it looks the same . Am I missing some thing
 
I bought the one specific for the 68/69 big block , I looked at then again and can’t tell the difference from the slant 6 pitman
 
I had installed big blocks using whatever pitman arm I had lying around (small block) and there seemed to be no fitment issues. My latest build will be using 73-76 steering components and I've already mocked them up to the engine and k-member. No issues at all. I have never really had anyone explain the difference in the big block factory pitman arms where it made sense as to why they used a different part.
 
I always thought it was for clearance issues with the big block oil pan....
 
Jim Lusk said:
I had installed big blocks using whatever pitman arm I had lying around (small block) and there seemed to be no fitment issues. My latest build will be using 73-76 steering components and I've already mocked them up to the engine and k-member. No issues at all. I have never really had anyone explain the difference in the big block factory pitman arms where it made sense as to why they used a different part.
Click to expand...

I'm with Jim on this one. Make life easy for yourself and use a standard Moog replacement pittman arm. No need to dig around to find the factory BB one. Put the car together with standard replacement parts and clearance the oil pan as necessary. My guess is the factory engineers used a special pittman arm since they didn't have the time to do a custom pan but maybe there was some other reason. Today there is no reason to hunt down the special pittman arm unless you're doing a 100% correct restoration.
 
The pitman arm doesn't come close to the pan. The idler does and that's why the pan is similar to the C-body unit.
 
Well , I thought I test fittted the new pitman arm but I guess I didn’t . The spline to sterling box end is larger than the stock slant 6 arm.
 
Guess it all depends on the sum of the parts used.


Restoring an original 67/69 BB with original BB items then the pitman arm is different. It has a different part number for a reason!

Here is a real one.

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12716CE8-F6C9-4C28-8DF3-F853FD7CE495.jpeg
 
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