70 C10 307 Power Steering Conversion Question (Newbie) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChevEE · 02-23-2015, 11:35 AM

I purchase a 1970 C10 with a 307 last week and the previous owner had started to convert to power steering. He had already installed the gear box and made all necessary steering assembly replacements. He told me all that was left was to install the pump, and he provided me with the pump, brackets, and hoses he had already acquired. I was looking through the FAQ's here and found a lot of great information, but there was one thing I can't quite figure out. Is the power steering pump driven off of the crank or the water pump?

I have worked on cars for a long time, but this is my first attempt at a restoration. Any help would be greatly appreciated!

big bad orange · 02-23-2015, 11:43 AM

the crank pulley,did it come with a 3 grove pulley or a 1 grove? you will need the 3 grove for power steering

markedgar5 · 02-23-2015, 12:24 PM

Hope this is correct. I'll check on truck later

ChevEE · 02-23-2015, 12:40 PM

Quote:

Originally Posted by big bad orange

the crank pulley,did it come with a 3 grove pulley or a 1 grove? you will need the 3 grove for power steering

I have a single groove crank pulley. Also, I do not have A/C. I assume I need the triple groove pulley because the outer groove is the one that would line up with the power steering pulley, is that correct?

Quote:

Originally Posted by markedgar5

Hope this is correct. I'll check on truck later

Thank you. I have been googling belt diagrams and come up with nothing so far. Only problem I see is that my alternator is on the driver's side above where the power steering pump will be. Though out of placement, that shows also that the power steering is driven directly off of the crank with no other accessories.

When replacing the crank pulley, is there anything else that needs to be considered? Thank you guys for the quick replies.

Lou Boffa · 02-23-2015, 01:27 PM

subbed

markedgar5 · 02-23-2015, 02:52 PM

Not sure if this was a 307. But may help

markedgar5 · 02-23-2015, 02:54 PM

Sorry do not know how to attach mult pics on one post.
I'd run the engine numbers to be sure u have a 307.

Might b an Oldsmobile or Pontiac

**john** · 02-23-2015, 03:03 PM

The illustration in post #3 appears to be a long water pump. Here's a pic for a short pump,

ChevEE · 02-23-2015, 03:16 PM

Quote:

Originally Posted by john

The illustration in post #3 appears to be a long water pump. Here's a pic for a short pump,

That's it! Thank you!

Mike C · 02-23-2015, 04:37 PM

The short water pump setup is very similar to the Corvette setup. And except for the arm on top of the alternator that is longer on the 'Vette, may be the same. (69-79 range) May be easier to find pics.

ChevEE · 02-23-2015, 04:46 PM

Quote:

Originally Posted by Mike C

The short water pump setup is very similar to the Corvette setup. And except for the arm on top of the alternator that is longer on the 'Vette, may be the same. (69-79 range) May be easier to find pics.

Thank you. I have found out that is one of the keys to working on these, knowing installation cross-references for parts.

hugger6933 · 02-23-2015, 08:17 PM

The pic in post #7 is of a Oldsmobile 307 or so I think. I don't think it is one of the General's orange[meaning Chevrolet] motors. Jim

02-23-2015, 11:35 AM	#1
ChevEE Registered User Join Date: Mar 2013 Location: Charlotte Posts: 42	70 C10 307 Power Steering Conversion Question (Newbie) I purchase a 1970 C10 with a 307 last week and the previous owner had started to convert to power steering. He had already installed the gear box and made all necessary steering assembly replacements. He told me all that was left was to install the pump, and he provided me with the pump, brackets, and hoses he had already acquired. I was looking through the FAQ's here and found a lot of great information, but there was one thing I can't quite figure out. Is the power steering pump driven off of the crank or the water pump? I have worked on cars for a long time, but this is my first attempt at a restoration. Any help would be greatly appreciated! __________________ 1970 C-10 lwb, 307 V8, THM-400 1998 Camaro Z28, LS1, T-56 6 speed manual (Daily driver)

02-23-2015, 11:43 AM	#2
big bad orange Registered User Join Date: Aug 2011 Location: Pittsburgh, PA Posts: 187	Re: 70 C10 307 Power Steering Conversion Question (Newbie) the crank pulley,did it come with a 3 grove pulley or a 1 grove? you will need the 3 grove for power steering __________________ just like that old Johnny Cash song. "One piece at a time and I am go na make an old C10 mine a look at all your faces when I drive through your town"

02-23-2015, 01:27 PM	#5
Lou Boffa Registered User Join Date: Jan 2013 Location: San Antonio, TX Posts: 733	Re: 70 C10 307 Power Steering Conversion Question (Newbie) subbed __________________ Figure out what you want--then figure out what you are willing to give up to get it.

02-23-2015, 02:52 PM	#6
markedgar5 Registered User Join Date: Nov 2003 Location: Kresgeville PA Posts: 110	Re: 70 C10 307 Power Steering Conversion Question (Newbie) Not sure if this was a 307. But may help Attached Images

02-23-2015, 03:03 PM	#8
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: 70 C10 307 Power Steering Conversion Question (Newbie) The illustration in post #3 appears to be a long water pump. Here's a pic for a short pump, Attached Images __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

02-23-2015, 12:24 PM	#3
markedgar5 Registered User Join Date: Nov 2003 Location: Kresgeville PA Posts: 110	Re: 70 C10 307 Power Steering Conversion Question (Newbie) Hope this is correct. I'll check on truck later Attached Images Last edited by markedgar5; 02-23-2015 at 12:33 PM.

02-23-2015, 02:54 PM	#7
markedgar5 Registered User Join Date: Nov 2003 Location: Kresgeville PA Posts: 110	Re: 70 C10 307 Power Steering Conversion Question (Newbie) Sorry do not know how to attach mult pics on one post. I'd run the engine numbers to be sure u have a 307. Might b an Oldsmobile or Pontiac Attached Images

02-23-2015, 04:37 PM	#10
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,728	Re: 70 C10 307 Power Steering Conversion Question (Newbie) The short water pump setup is very similar to the Corvette setup. And except for the arm on top of the alternator that is longer on the 'Vette, may be the same. (69-79 range) May be easier to find pics. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

02-23-2015, 08:17 PM	#12
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,280	Re: 70 C10 307 Power Steering Conversion Question (Newbie) The pic in post #7 is of a Oldsmobile 307 or so I think. I don't think it is one of the General's orange[meaning Chevrolet] motors. Jim



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