power steering pulley - The 1947 - Present Chevrolet & GMC Truck Message Board Network

primerbomb71 · 08-24-2002, 02:31 PM

what style power steering pulley do i need to use on my 71 350? i have a pump that came off a 64 impala, is the same pump? a new is $100

72BBGMC · 08-24-2002, 04:09 PM

You can use the pump, brackets and pulley from the 64 after you mod the cradle bracket, assuming the 64 is a V8 pump. The 64 cradle bracket will not clear the 8 inch balancer on the 350. You can cut the cradle to clear the balancer.

primerbomb71 · 08-26-2002, 07:04 PM

the books i have read show tw pullies, a flat and a set back pulley. i have the set back, is it the one i need? what about the return line on the pump? the one i have from the impala points down towards the bottom of the engine. is this right for the truck? does anyone have a pic of a pump off the truck? i need all the help i can get. any replies will be greatly apperciated

*Fast68Chevy* · 08-26-2002, 09:33 PM

you talking about the pump pulley or the crank pullies ?

crank pully for the p/s belt is about 1 3/4" deep and about 6 3/4" diameter and is part stamping number 3751232 BB

good luck

primerbomb71 · 08-26-2002, 10:45 PM

i'm talkin bout the pump pulley. i know i have the right crank pullies, they came off a friends 72 but it didnt have a pump pulley. the one i have doesnt have a # stamped on it. pics of the right pulley and pump would answer my question. does anybody have pics of them?

72BBGMC · 08-27-2002, 09:09 AM

As I said in the first reply, You can use the 64 pump set up as long as it came off a V8. You will have to cut the cradle bracket that bolts to the front of the block so it will clear the balancer. The pulley on the 64 pump is off set to match those brackets. If you start mixing pump pulleys and brackets your belt will be off. I'll post a picture of a correct truck pump for you. The truck brackets are different than the 64. They are made to clear the large balancers used on a 350 truck motor and used two different off set pulleys. 69-70 used the flat pulley p/n# ending with 537, it takes the two groove cast iron crank driver pulley for it's mate. 71-72 used a dished pulley p/n# ending with 325 and used the standard stamped steel single groove crank driver pulley for it's mate. The 61-68 car and trucks used two different bracket set ups and had two different off set pulleys. The cradle bracket is the same , they used two different adjuster brackets. If the adjuster bracket bolts in behind the cradle then it takes pulley p/n# ending with 509. If the adjuster does not go in behined the cradle it takes pulley p/n # ending with 457.
On a lot of the older pump pulleys you will find the p/n stamped on the back of the pulley. I hope this answered your questions, if not we'll try again!!
Post a picture of the pump and brackets that you have from the 64.

72BBGMC · 08-27-2002, 09:14 AM

Pump on the left is 69-70, pump on the right is 71-72.

72BBGMC · 08-27-2002, 09:24 AM

pump on the left is 71-72, pump on the right is 69-70

tom hand · 08-27-2002, 04:18 PM

If you really need the correct bracket, Alan Grove makes a bracket that is almost an exact copt of the original. Click on the picture at the bottom of the page.

http://www.streetrodcatalog.com/manu...e_sbcswp.shtml

*MJF* · 08-27-2002, 04:24 PM

That must be why I had such a hard time installing my pump & bracket. I have the 71-71 style trying to put it on a 70.

primerbomb71 · 08-27-2002, 07:17 PM

the pulley i have is the same as the 71-72! the pump on the other hand is not, neither are the brackets. the return line on the pump is pointed down and inward at a 45degree angle. the brackets i have are two piece. the lower bolts to the block on the two front holes to the pump on the pivot bolt. the rear bracket bolts in behind the motor mount on the top frontand bottom hole.
too bad i dont have any way to post pics, sorry

72BBGMC · 08-28-2002, 10:51 AM

Hey Primerbomb71, After reading your last reply I don't think you got my explanation of PS pulleys and their matching brackets. The pulley on the 64 pump is NOT the same as the 71-72 truck. They LOOK the same because they both have a dished off set but they have DIFFERENT off sets. Thats why the pulleys have different part numbers. You have to match the correct off set pulley to their matching brackets. Just because the pump from the 64 doesn't look like the truck pump doesn't mean it won't work. I'm going to post pictures of a PS pump for the 61-68 car and truck, short water pump, small balancer. Also a picture of a modified cradle bracket. Please let me know if you got all this, if not I'll try to answer your questions.

72BBGMC · 08-28-2002, 10:54 AM

Back view

72BBGMC · 08-28-2002, 10:59 AM

This is the second type of adjuster bracket that GM used. It bolts in behind the cradle using the same two bolt holes. This bracket set up takes a different off set pulley to compensate for the thickness of the adjuster bracket.

72BBGMC · 08-28-2002, 11:04 AM

This is the cradle bracket for the small balancer. It has to be cut to clear the large balancers used on the 350 engines after 1968.

**Desert Rat** · 08-28-2002, 12:13 PM

You can use the dished Impala PS pump pulley but you need to use the shorter ps crank pulley.the truck ones on the pump are flat and the crank pulley is taller,either one will work as long as you have matching pulleys.

**Desert Rat** · 08-28-2002, 12:14 PM

If you need pumps,brackets,pulleys let me know.i can help.Thanks

primerbomb71 · 08-28-2002, 06:28 PM

the stuff i have is like the 1st pic except for the return line on the pump goes to the opppsite direction

08-24-2002, 02:31 PM	#1
primerbomb71 Registered User Join Date: Aug 2002 Location: louisiana Posts: 10	power steering pulley what style power steering pulley do i need to use on my 71 350? i have a pump that came off a 64 impala, is the same pump? a new is $100 __________________ 71 c-10 in the works

08-24-2002, 04:09 PM	#2
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	ps pump You can use the pump, brackets and pulley from the 64 after you mod the cradle bracket, assuming the 64 is a V8 pump. The 64 cradle bracket will not clear the 8 inch balancer on the 350. You can cut the cradle to clear the balancer.

08-26-2002, 07:04 PM	#3
primerbomb71 Registered User Join Date: Aug 2002 Location: louisiana Posts: 10	the books i have read show tw pullies, a flat and a set back pulley. i have the set back, is it the one i need? what about the return line on the pump? the one i have from the impala points down towards the bottom of the engine. is this right for the truck? does anyone have a pic of a pump off the truck? i need all the help i can get. any replies will be greatly apperciated __________________ 71 c-10 in the works

08-26-2002, 10:45 PM	#5
primerbomb71 Registered User Join Date: Aug 2002 Location: louisiana Posts: 10	i'm talkin bout the pump pulley. i know i have the right crank pullies, they came off a friends 72 but it didnt have a pump pulley. the one i have doesnt have a # stamped on it. pics of the right pulley and pump would answer my question. does anybody have pics of them? __________________ 71 c-10 in the works

08-27-2002, 09:09 AM	#6
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	ps pump As I said in the first reply, You can use the 64 pump set up as long as it came off a V8. You will have to cut the cradle bracket that bolts to the front of the block so it will clear the balancer. The pulley on the 64 pump is off set to match those brackets. If you start mixing pump pulleys and brackets your belt will be off. I'll post a picture of a correct truck pump for you. The truck brackets are different than the 64. They are made to clear the large balancers used on a 350 truck motor and used two different off set pulleys. 69-70 used the flat pulley p/n# ending with 537, it takes the two groove cast iron crank driver pulley for it's mate. 71-72 used a dished pulley p/n# ending with 325 and used the standard stamped steel single groove crank driver pulley for it's mate. The 61-68 car and trucks used two different bracket set ups and had two different off set pulleys. The cradle bracket is the same , they used two different adjuster brackets. If the adjuster bracket bolts in behind the cradle then it takes pulley p/n# ending with 509. If the adjuster does not go in behined the cradle it takes pulley p/n # ending with 457. On a lot of the older pump pulleys you will find the p/n stamped on the back of the pulley. I hope this answered your questions, if not we'll try again!! Post a picture of the pump and brackets that you have from the 64.

08-26-2002, 09:33 PM	#4
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	you talking about the pump pulley or the crank pullies ? crank pully for the p/s belt is about 1 3/4" deep and about 6 3/4" diameter and is part stamping number 3751232 BB good luck

08-27-2002, 09:14 AM	#7
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	pump picture Pump on the left is 69-70, pump on the right is 71-72. Attached Images Last edited by 72BBGMC; 08-27-2002 at 09:22 AM.

08-27-2002, 09:24 AM	#8
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	pump picture pump on the left is 71-72, pump on the right is 69-70 Attached Images

08-27-2002, 04:18 PM	#9
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	If you really need the correct bracket, Alan Grove makes a bracket that is almost an exact copt of the original. Click on the picture at the bottom of the page. http://www.streetrodcatalog.com/manu...e_sbcswp.shtml __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

08-27-2002, 04:24 PM	#10
MJF No longer truckless Join Date: Mar 2002 Location: Campbell, CA Posts: 299	That must be why I had such a hard time installing my pump & bracket. I have the 71-71 style trying to put it on a 70.

08-27-2002, 07:17 PM	#11
primerbomb71 Registered User Join Date: Aug 2002 Location: louisiana Posts: 10	the pulley i have is the same as the 71-72! the pump on the other hand is not, neither are the brackets. the return line on the pump is pointed down and inward at a 45degree angle. the brackets i have are two piece. the lower bolts to the block on the two front holes to the pump on the pivot bolt. the rear bracket bolts in behind the motor mount on the top frontand bottom hole. too bad i dont have any way to post pics, sorry __________________ 71 c-10 in the works

08-28-2002, 10:51 AM	#12
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	Hey Primerbomb71, After reading your last reply I don't think you got my explanation of PS pulleys and their matching brackets. The pulley on the 64 pump is NOT the same as the 71-72 truck. They LOOK the same because they both have a dished off set but they have DIFFERENT off sets. Thats why the pulleys have different part numbers. You have to match the correct off set pulley to their matching brackets. Just because the pump from the 64 doesn't look like the truck pump doesn't mean it won't work. I'm going to post pictures of a PS pump for the 61-68 car and truck, short water pump, small balancer. Also a picture of a modified cradle bracket. Please let me know if you got all this, if not I'll try to answer your questions. Attached Images

08-28-2002, 10:54 AM	#13
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	Back view Attached Images

08-28-2002, 10:59 AM	#14
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	This is the second type of adjuster bracket that GM used. It bolts in behind the cradle using the same two bolt holes. This bracket set up takes a different off set pulley to compensate for the thickness of the adjuster bracket. Attached Images

08-28-2002, 11:04 AM	#15
72BBGMC Registered User Join Date: Jun 2000 Location: georgia Posts: 284	This is the cradle bracket for the small balancer. It has to be cut to clear the large balancers used on the 350 engines after 1968. Attached Images



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08-28-2002, 12:13 PM	#16
Desert Rat Senior Member Join Date: Dec 1999 Location: Darrington, Washington Posts: 3,963	You can use the dished Impala PS pump pulley but you need to use the shorter ps crank pulley.the truck ones on the pump are flat and the crank pulley is taller,either one will work as long as you have matching pulleys.

08-28-2002, 12:14 PM	#17
Desert Rat Senior Member Join Date: Dec 1999 Location: Darrington, Washington Posts: 3,963	If you need pumps,brackets,pulleys let me know.i can help.Thanks

08-28-2002, 06:28 PM	#18
primerbomb71 Registered User Join Date: Aug 2002 Location: louisiana Posts: 10	the stuff i have is like the 1st pic except for the return line on the pump goes to the opppsite direction __________________ 71 c-10 in the works

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