Power Steering Gear Swapout - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wxman1 · 07-15-2002, 02:55 AM

Have a 69 SWB Fleetside w/350 CID and TH350 Tranny.
Current power steering gearbox is leaking from the bottom
seal. Soooo...went to the local salvage yard and got a replacement (supposedly from a 69) and started the swapout.
Everything is hunky-dory until I take the steering shaft coupler
off the old one and put it on the new one. Well...the splined
shaft on the old one (the one I removed) is almost 1/4 inch
bigger than the one from the yard. Hmmmm. This salvage guy is usually very reliable and knows his parts backwards and forwards. The other possibility...and more likely...is that the previous owner used some later year parts on this truck. I checked the casting numbers. There are large numbers and small numbers. The large casting numbers match (between the two) but the smaller numbers are different. Soooo...should I just take the old one back and see if he knows what year it is...or is there some way I can tell by looking at it. Confused.

Jim M.

Longhorn Man · 07-15-2002, 07:11 AM

Interesting..I remember reading something somewhere about this...but I can't remember now....
Anyways, TTT

07-15-2002, 02:55 AM	#1
wxman1 Senior Member Join Date: May 2002 Location: mt juliet, tennessee, usa Posts: 237	Power Steering Gear Swapout Have a 69 SWB Fleetside w/350 CID and TH350 Tranny. Current power steering gearbox is leaking from the bottom seal. Soooo...went to the local salvage yard and got a replacement (supposedly from a 69) and started the swapout. Everything is hunky-dory until I take the steering shaft coupler off the old one and put it on the new one. Well...the splined shaft on the old one (the one I removed) is almost 1/4 inch bigger than the one from the yard. Hmmmm. This salvage guy is usually very reliable and knows his parts backwards and forwards. The other possibility...and more likely...is that the previous owner used some later year parts on this truck. I checked the casting numbers. There are large numbers and small numbers. The large casting numbers match (between the two) but the smaller numbers are different. Soooo...should I just take the old one back and see if he knows what year it is...or is there some way I can tell by looking at it. Confused. Jim M.

07-15-2002, 07:11 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Interesting..I remember reading something somewhere about this...but I can't remember now.... Anyways, TTT



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