Power steering offset - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**skokie** · 09-21-2025, 12:19 AM

Hello

The power steering pulley and the crank pulley are off by about 1/4 in thereabouts. Not sure why I didnt notice it before. Could I press that pulley further back into the pump or would I need a new set of crank pulleys?

Thanks!

**mr48chev** · 09-21-2025, 02:34 AM

I've got a twin to that pump sitting out back and If I can put it on my things to remember to do in the morning list I'll get a photo or two with measurements but I think with that pump and pulley on is on and it isn't like the later pressed on pulleys.

I put a 78 350 in my 71 and had to run a long water pump to be able to see the timing mark That took using the matching pump and brackets.

**skokie** · 09-21-2025, 12:20 PM

Thanks!

Quote:

Originally Posted by mr48chev

I've got a twin to that pump sitting out back and If I can put it on my things to remember to do in the morning list I'll get a photo or two with measurements but I think with that pump and pulley on is on and it isn't like the later pressed on pulleys.

I put a 78 350 in my 71 and had to run a long water pump to be able to see the timing mark That took using the matching pump and brackets.

**MikeB** · 09-21-2025, 03:37 PM

Could be the camera lens is causing it, but it looks like the pump is cocked a little. I'd take a look at the mounting brackets to see what could be done. Maybe a slight relocation by enlarging holes and/or some friendly persuasion (bending). Of course it won't take care of the offset between pulleys,

**Steeveedee** · 09-21-2025, 05:34 PM

Quote:

Originally Posted by MikeB

Could be the camera lens is causing it, but it looks like the pump is cocked a little. I'd take a look at the mounting brackets to see what could be done. Maybe a slight relocation by enlarging holes and/or some friendly persuasion (bending). Of course it won't take care of the offset between pulleys,

I've seen high mileage cars that the brackets have bent and the pulleys no longer all align. I was thinking that it could be camera aberration, too.

**mr48chev** · 09-21-2025, 06:20 PM

I didn't find the right pump I was looking for.

**skokie** · 09-21-2025, 07:10 PM

UPDATE: I put a wrench on the pulley bolt and was able to get 1/2 a full rotation out of it. The PS and crank pulley are almost perfectly lined up. Maybe off by a 16th or so.
Thanks!

**MikeB** · 09-22-2025, 01:19 PM

Quote:

Originally Posted by skokie

UPDATE: I put a wrench on the pulley bolt and was able to get 1/2 a full rotation out of it. The PS and crank pulley are almost perfectly lined up. Maybe off by a 16th or so.
Thanks!

Problem solved! Was that the center bolt? If so that means the damper wasn't on all the way. Or is the pulley held on to the damper by three bolts?

**skokie** · 09-22-2025, 03:32 PM

Quote:

Originally Posted by MikeB

Problem solved! Was that the center bolt? If so that means the damper wasn't on all the way. Or is the pulley held on to the damper by three bolts?

I tightened the nut on the power steering pulley.

Thanks!

09-21-2025, 12:19 AM	#1
skokie Senior Member Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,387	Power steering offset Hello The power steering pulley and the crank pulley are off by about 1/4 in thereabouts. Not sure why I didnt notice it before. Could I press that pulley further back into the pump or would I need a new set of crank pulleys? Thanks! Attached Images __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

09-21-2025, 02:34 AM	#2
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 16,395	Re: Power steering offset I've got a twin to that pump sitting out back and If I can put it on my things to remember to do in the morning list I'll get a photo or two with measurements but I think with that pump and pulley on is on and it isn't like the later pressed on pulleys. I put a 78 350 in my 71 and had to run a long water pump to be able to see the timing mark That took using the matching pump and brackets. Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

09-21-2025, 03:37 PM	#4
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 4,038	Re: Power steering offset Could be the camera lens is causing it, but it looks like the pump is cocked a little. I'd take a look at the mounting brackets to see what could be done. Maybe a slight relocation by enlarging holes and/or some friendly persuasion (bending). Of course it won't take care of the offset between pulleys, __________________ Mike 1969 Custom/10 LWB -- owned for 37 years. 350/TH350, 3.08 posi, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. Hedman stainless headers. Old Air installation in progress. 1982 Custom Deluxe 10 SWB -- converted from 250-six to roller cam 350 w/ Vortec heads -- sold 1981 C10 Silverado LWB, 305, TH350C -- sold, but wish I still had it! 1969 C10 (not the current one) which I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 26 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!

09-21-2025, 06:20 PM	#6
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 16,395	Re: Power steering offset I didn't find the right pump I was looking for. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

09-21-2025, 07:10 PM	#7
skokie Senior Member Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,387	Re: Power steering offset UPDATE: I put a wrench on the pulley bolt and was able to get 1/2 a full rotation out of it. The PS and crank pulley are almost perfectly lined up. Maybe off by a 16th or so. Thanks! __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234



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