Pulley Problems - Do I have all the right stuff? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**KyleSeal** · 12-07-2016, 07:38 PM

Building a '70s 350 for my '70 Chevy, and I have the correct alternator bracket and power steering pump I believe, and a long water neck. But nothing lines up! I have a new pulley on the PS pump but it seems to be very close if not exact to the original (original was bent). Is the crank pulley correct?

Photos attached.

storm9c1 · 12-08-2016, 12:48 AM

Original '70 would have came with a short water pump. Which also means different alignment for the PS pulley. If you keep the long water pump, then you need a PS pump and pulley for a long water pump setup.

Is the crank pulley for short or long water pump?

If it's for short water pump, then you will also need to change your water pump. Or get the correct crank pulleys for a long setup. The original crank pulleys for a short water pump would be stacked, meaning the PS crank pulley is a separate bolt-on pulley that stacks on to the crank pulley. If I recall correctly.

You aren't the first nor the last to get mixed up with this. There are probably 100 different pulley setups for the SBC spanning decades.

Sometimes it's easier to pull a complete accessory setup off something in a junkyard and replace/rebuild the parts for that year vehicle.

**Captainfab** · 12-08-2016, 12:56 AM

No you do not. You have a long water pump and the water pump pulley looks like a long pump pulley. Then you have short water pump pulleys on the crank. The power steering pump and bracket are for a short water pump. However it looks like the PS pump pulley does not line up with the correct groove on the crank.

As storm9c1 said, your '70 originally came with a short water pump, as did all trucks from '55-'72 with both small blocks and big blocks.

crazy longhorn · 12-08-2016, 01:18 AM

The steer pump/brackets, look right for your 70.....I agree with Capt fab, the water pump is 73-up, as is the top pulley. Understand, that any sb Chev, is the same distance, from the front of the balancer, but ALL of the pullies/parts need to come off the same engine

Longhorn

**PGSigns** · 12-08-2016, 08:58 AM

Kyle when I did my 66 I went to a long pump and used everything form a 75 truck. A trip to the junk yard to get it all off one car or truck will get you what you need.
Jimmy

12-07-2016, 07:38 PM	#1
KyleSeal Senior Member Join Date: Mar 2014 Location: Toano, VA Posts: 884	Pulley Problems - Do I have all the right stuff? Building a '70s 350 for my '70 Chevy, and I have the correct alternator bracket and power steering pump I believe, and a long water neck. But nothing lines up! I have a new pulley on the PS pump but it seems to be very close if not exact to the original (original was bent). Is the crank pulley correct? Photos attached. Attached Images __________________ "Sometimes I do serve as a good bad example. Glad to be of service." My Build Thread (1967 C10, lowered, EFI, daily truck): http://67-72chevytrucks.com/vboard/s...d.php?t=830809

12-08-2016, 12:48 AM	#2
storm9c1 * That's interesting * Join Date: Oct 2008 Location: Pittsburgh, PA Posts: 2,772	Re: Pulley Problems - Do I have all the right stuff? Original '70 would have came with a short water pump. Which also means different alignment for the PS pulley. If you keep the long water pump, then you need a PS pump and pulley for a long water pump setup. Is the crank pulley for short or long water pump? If it's for short water pump, then you will also need to change your water pump. Or get the correct crank pulleys for a long setup. The original crank pulleys for a short water pump would be stacked, meaning the PS crank pulley is a separate bolt-on pulley that stacks on to the crank pulley. If I recall correctly. You aren't the first nor the last to get mixed up with this. There are probably 100 different pulley setups for the SBC spanning decades. Sometimes it's easier to pull a complete accessory setup off something in a junkyard and replace/rebuild the parts for that year vehicle. __________________ Tom Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... Last edited by storm9c1; 12-08-2016 at 12:55 AM.

12-08-2016, 12:56 AM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,251	Re: Pulley Problems - Do I have all the right stuff? No you do not. You have a long water pump and the water pump pulley looks like a long pump pulley. Then you have short water pump pulleys on the crank. The power steering pump and bracket are for a short water pump. However it looks like the PS pump pulley does not line up with the correct groove on the crank. As storm9c1 said, your '70 originally came with a short water pump, as did all trucks from '55-'72 with both small blocks and big blocks. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

12-08-2016, 01:18 AM	#4
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Re: Pulley Problems - Do I have all the right stuff? The steer pump/brackets, look right for your 70.....I agree with Capt fab, the water pump is 73-up, as is the top pulley. Understand, that any sb Chev, is the same distance, from the front of the balancer, but ALL of the pullies/parts need to come off the same engine Longhorn __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

12-08-2016, 08:58 AM	#5
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Pulley Problems - Do I have all the right stuff? Kyle when I did my 66 I went to a long pump and used everything form a 75 truck. A trip to the junk yard to get it all off one car or truck will get you what you need. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.