Power steering pulley and crank pulley information - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**CarlsLQ9SS** · 07-08-2023, 10:22 PM

Anyone know anything about these pulleys?

**kwmech** · 07-09-2023, 01:17 AM

Crank pulley assy with AC and a power steering pulley

**CarlsLQ9SS** · 07-09-2023, 08:22 AM

Thanks for the info, I never seen a cast iron crank pulley before and searched and found the power steering pulley was used on big blocks. I couldn’t hardly make out the crank pulley part number and figured someone here would know what combination it was for.

**Sheepdip** · 07-09-2023, 08:34 AM

Quote:

Originally Posted by kwmech

Crank pulley assy with AC and a power steering pulley

Looks exactly like the factory set-up on Otis.

**lolife99** · 07-09-2023, 10:57 PM

Cast iron pulley looks like it’s been welded on.
You might want to find another one, just to be safe.

**CarlsLQ9SS** · 07-10-2023, 05:29 AM

I think that’s dried oil from a past oil leak, I’ll look closer when I get home from work.

MARKDTN · 07-11-2023, 07:59 AM

I have never seen cast crank pulleys on anything automotive. I would have assumed a marine application. Interesting.

**lolife99** · 07-11-2023, 09:28 AM

Quote:

Originally Posted by MARKDTN

I have never seen cast crank pulleys on anything automotive. I would have assumed a marine application. Interesting.

No. Those cast pulleys were correct add on power steering pulleys for the 67-72 trucks.
I’ve had many of them.

**CarlsLQ9SS** · 07-11-2023, 07:43 PM

I learned something else new about these trucks!

RichardJ · 07-11-2023, 08:13 PM

I had a cast pulley like that as part of a aftermarket AC system . It used one of those old York Compressors. The evaporator that hung under the dash was the size of a steamer trunk.

mr.mud1 · 07-11-2023, 11:13 PM

i thought the cast pulley looked funky too but it maybe just old oil,dirt and grease dried up but certainly it wouldn't be wise to use it,if it had been welded on.my big block 72 truck with factory A/C has 2 pulleys on the crank,both steel not cast.i have a couple cast crank pulleys here,i seem to recall they were on 62-64 283's or 327's in fullsize cars?

**CarlsLQ9SS** · 07-12-2023, 05:14 AM

It was dried oil and dirt from a past oil leak.

07-08-2023, 10:22 PM	#1
CarlsLQ9SS Senior Member Join Date: Aug 2018 Location: London, Ky Posts: 1,162	Power steering pulley and crank pulley information Anyone know anything about these pulleys? Attached Images __________________ Carl 1971 GMC short bed, (Henry) Options I've added, tilt, ac, 8k tach, Electric speedometer conversion for LS swap, 6.0 with 823 heads and BTR stage 4 truck cam, 4L80e, posi with 3.73 rear end, Power steering and power brakes Lowered 5/7. Frame up build.

07-09-2023, 01:17 AM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	Re: Power steering pulley and crank pulley information Crank pulley assy with AC and a power steering pulley

07-09-2023, 08:22 AM	#3
CarlsLQ9SS Senior Member Join Date: Aug 2018 Location: London, Ky Posts: 1,162	Re: Power steering pulley and crank pulley information Thanks for the info, I never seen a cast iron crank pulley before and searched and found the power steering pulley was used on big blocks. I couldn’t hardly make out the crank pulley part number and figured someone here would know what combination it was for. __________________ Carl 1971 GMC short bed, (Henry) Options I've added, tilt, ac, 8k tach, Electric speedometer conversion for LS swap, 6.0 with 823 heads and BTR stage 4 truck cam, 4L80e, posi with 3.73 rear end, Power steering and power brakes Lowered 5/7. Frame up build.

07-09-2023, 10:57 PM	#5
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Power steering pulley and crank pulley information Cast iron pulley looks like it’s been welded on. You might want to find another one, just to be safe. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

07-10-2023, 05:29 AM	#6
CarlsLQ9SS Senior Member Join Date: Aug 2018 Location: London, Ky Posts: 1,162	Re: Power steering pulley and crank pulley information I think that’s dried oil from a past oil leak, I’ll look closer when I get home from work. __________________ Carl 1971 GMC short bed, (Henry) Options I've added, tilt, ac, 8k tach, Electric speedometer conversion for LS swap, 6.0 with 823 heads and BTR stage 4 truck cam, 4L80e, posi with 3.73 rear end, Power steering and power brakes Lowered 5/7. Frame up build.

07-11-2023, 07:59 AM	#7
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,165	Re: Power steering pulley and crank pulley information I have never seen cast crank pulleys on anything automotive. I would have assumed a marine application. Interesting. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

07-11-2023, 07:43 PM	#9
CarlsLQ9SS Senior Member Join Date: Aug 2018 Location: London, Ky Posts: 1,162	Re: Power steering pulley and crank pulley information I learned something else new about these trucks! __________________ Carl 1971 GMC short bed, (Henry) Options I've added, tilt, ac, 8k tach, Electric speedometer conversion for LS swap, 6.0 with 823 heads and BTR stage 4 truck cam, 4L80e, posi with 3.73 rear end, Power steering and power brakes Lowered 5/7. Frame up build.

07-11-2023, 08:13 PM	#10
RichardJ Registered User Join Date: Apr 2010 Location: So Cal Posts: 1,466	Re: Power steering pulley and crank pulley information I had a cast pulley like that as part of a aftermarket AC system . It used one of those old York Compressors. The evaporator that hung under the dash was the size of a steamer trunk. __________________ '67 GMC 2500, 292, 4spd, AC

07-11-2023, 11:13 PM	#11
mr.mud1 Registered User Join Date: Dec 2020 Location: Joggins Nova Scotia Posts: 1,597	Re: Power steering pulley and crank pulley information i thought the cast pulley looked funky too but it maybe just old oil,dirt and grease dried up but certainly it wouldn't be wise to use it,if it had been welded on.my big block 72 truck with factory A/C has 2 pulleys on the crank,both steel not cast.i have a couple cast crank pulleys here,i seem to recall they were on 62-64 283's or 327's in fullsize cars?

07-12-2023, 05:14 AM	#12
CarlsLQ9SS Senior Member Join Date: Aug 2018 Location: London, Ky Posts: 1,162	Re: Power steering pulley and crank pulley information It was dried oil and dirt from a past oil leak. __________________ Carl 1971 GMC short bed, (Henry) Options I've added, tilt, ac, 8k tach, Electric speedometer conversion for LS swap, 6.0 with 823 heads and BTR stage 4 truck cam, 4L80e, posi with 3.73 rear end, Power steering and power brakes Lowered 5/7. Frame up build.

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