CLASS RACER FORUM - View Single Post - What Pitman Arm? S10 manual box in 2nd Gen Camaro

Jeff Kempton · 05-09-2021, 08:39 PM

Hi Maurice, the center to center length of the pitman arm off the original PS box is 6 3/4" and it is straight with no offset. It has a tapered hole (0.545-0.625") for connection to a ball joint on the centerlink. Part number on the original PS arm is 3964881 for reference, but as I originally noted the shaft diameter on this box is bigger than the S10 box so it is not interchangable.

I just noticed that you asked the length of the idler arm and not the pitman, I will check that tomorrow.

The sector shaft is 1 1/8" at the seal and the OD at the splines is 1.110", with the threaded end of the shaft 7/8" diameter.

05-09-2021, 08:39 PM	#3
Jeff Kempton Member Join Date: Apr 2004 Location: Halifax, Nova Scotia, Canada Posts: 234 Likes: 1,043 Liked 66 Times in 30 Posts	Re: What Pitman Arm? S10 manual box in 2nd Gen Camaro Hi Maurice, the center to center length of the pitman arm off the original PS box is 6 3/4" and it is straight with no offset. It has a tapered hole (0.545-0.625") for connection to a ball joint on the centerlink. Part number on the original PS arm is 3964881 for reference, but as I originally noted the shaft diameter on this box is bigger than the S10 box so it is not interchangable. I just noticed that you asked the length of the idler arm and not the pitman, I will check that tomorrow. The sector shaft is 1 1/8" at the seal and the OD at the splines is 1.110", with the threaded end of the shaft 7/8" diameter.