78 C30 steering box in my 68 C30 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

My Alter Ego · 05-21-2014, 01:00 PM

I've read a number of threads relative to this swap and have come to the conclusion that this is in essence a bolt in situation. My 68 has power steering as does the 78, but the articles I've read don't discuss which power steering pump assembly is/are being used. I'm swapping out all the front suspension from the 78 to install on my 68, but the 78 has a Hydro boost p/s pump, Is it advisable to continue using the pump from 68? Thanks in advance for any and all info.

hugger6933 · 05-21-2014, 03:26 PM

The hydraboost is for the brakes to assure that vacuum will be there when needed like in diesel trucks they have to pump their own to have any

**Classic Heartbeat** · 05-21-2014, 06:27 PM

The steering gear should bolt right on, however the input shaft is smaller on that gear than the 68. That is if you have the integral steering gear already and not the power assist steering. When you take the steering gear off the 78 be sure to take the rag joint also. That way you know that you have one that will work. WES

05-21-2014, 01:00 PM	#1
My Alter Ego Registered User Join Date: Sep 2009 Location: Sacramento, CA Posts: 50	78 C30 steering box in my 68 C30 I've read a number of threads relative to this swap and have come to the conclusion that this is in essence a bolt in situation. My 68 has power steering as does the 78, but the articles I've read don't discuss which power steering pump assembly is/are being used. I'm swapping out all the front suspension from the 78 to install on my 68, but the 78 has a Hydro boost p/s pump, Is it advisable to continue using the pump from 68? Thanks in advance for any and all info.

05-21-2014, 03:26 PM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,279	Re: 78 C30 steering box in my 68 C30 The hydraboost is for the brakes to assure that vacuum will be there when needed like in diesel trucks they have to pump their own to have any

05-21-2014, 06:27 PM	#3
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	Re: 78 C30 steering box in my 68 C30 The steering gear should bolt right on, however the input shaft is smaller on that gear than the 68. That is if you have the integral steering gear already and not the power assist steering. When you take the steering gear off the 78 be sure to take the rag joint also. That way you know that you have one that will work. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys



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