3/4in waterpump pulley?
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
I read several places they had 5/8 until 1972 and switched to 3/4 in afterward. Are you certain ? It is also 3/16" wider from the block to the pulley than the stock short pump I had
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,170
From: Hermosa
How many grooves you looking for? I found two on ebay.
http://www.ebay.com/itm/75-76-77-78-79-80-81-C3-CORVETTE-350-WATER-PUMP-PULLEY-NEW-GM-14023159-/370609152731?_trksid=p2141725.m3641.l6368
http://www.ebay.com/itm/75-76-77-78-79-80-81-82-CORVETTE-DUAL-DEEP-GROOVE-WATER-PUMP-PULLEY-14023159CJ-/121187425579?_trksid=p2141725.m3641.l6368
http://www.ebay.com/itm/75-76-77-78-79-80-81-C3-CORVETTE-350-WATER-PUMP-PULLEY-NEW-GM-14023159-/370609152731?_trksid=p2141725.m3641.l6368
http://www.ebay.com/itm/75-76-77-78-79-80-81-82-CORVETTE-DUAL-DEEP-GROOVE-WATER-PUMP-PULLEY-14023159CJ-/121187425579?_trksid=p2141725.m3641.l6368
Last edited by REELAV8R; Mar 14, 2016 at 10:31 AM.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Short-Style Pump for most 1955-72 cars & trucks (5/8" pilot shaft)
- Fits all 1955-68 S/B Chevy passenger cars, 1969-70 350 c.i.d. Corvettes and 1955-72 light duty trucks.
- Has 3/4" ball/ball bearing.
- Dimension from block surface to hub: 5-5/8". Inlet diameter: 1.80".
Long-Style Pump for 1969-87 V8, 90° V6 & 1973-86 truck (5/8" pilot shaft)
- Fits all 1969-87 S/B Chevy or 90° V6 passenger cars and 1973-86 light duty trucks. Does not fit Corvettes (use #8810 or #8812) or
late-model vehicles with serpentine accessory drive belts (use #8881).
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 6-15/16". Inlet diameter: 1.80".
Short-Style Pump for 1971-82 Corvettes 3/4" pilot shaft)
- Fits all 1971-82 S/B Corvettes.
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 5-13/16". Inlet diameter: 1.80".
- Fits all 1955-68 S/B Chevy passenger cars, 1969-70 350 c.i.d. Corvettes and 1955-72 light duty trucks.
- Has 3/4" ball/ball bearing.
- Dimension from block surface to hub: 5-5/8". Inlet diameter: 1.80".
Long-Style Pump for 1969-87 V8, 90° V6 & 1973-86 truck (5/8" pilot shaft)
- Fits all 1969-87 S/B Chevy or 90° V6 passenger cars and 1973-86 light duty trucks. Does not fit Corvettes (use #8810 or #8812) or
late-model vehicles with serpentine accessory drive belts (use #8881).
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 6-15/16". Inlet diameter: 1.80".
Short-Style Pump for 1971-82 Corvettes 3/4" pilot shaft)
- Fits all 1971-82 S/B Corvettes.
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 5-13/16". Inlet diameter: 1.80".
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
Short-Style Pump for most 1955-72 cars & trucks (5/8" pilot shaft)
- Fits all 1955-68 S/B Chevy passenger cars, 1969-70 350 c.i.d. Corvettes and 1955-72 light duty trucks.
- Has 3/4" ball/ball bearing.
- Dimension from block surface to hub: 5-5/8". Inlet diameter: 1.80".
Long-Style Pump for 1969-87 V8, 90° V6 & 1973-86 truck (5/8" pilot shaft)
- Fits all 1969-87 S/B Chevy or 90° V6 passenger cars and 1973-86 light duty trucks. Does not fit Corvettes (use #8810 or #8812) or
late-model vehicles with serpentine accessory drive belts (use #8881).
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 6-15/16". Inlet diameter: 1.80".
Short-Style Pump for 1971-82 Corvettes 3/4" pilot shaft)
- Fits all 1971-82 S/B Corvettes.
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 5-13/16". Inlet diameter: 1.80".
- Fits all 1955-68 S/B Chevy passenger cars, 1969-70 350 c.i.d. Corvettes and 1955-72 light duty trucks.
- Has 3/4" ball/ball bearing.
- Dimension from block surface to hub: 5-5/8". Inlet diameter: 1.80".
Long-Style Pump for 1969-87 V8, 90° V6 & 1973-86 truck (5/8" pilot shaft)
- Fits all 1969-87 S/B Chevy or 90° V6 passenger cars and 1973-86 light duty trucks. Does not fit Corvettes (use #8810 or #8812) or
late-model vehicles with serpentine accessory drive belts (use #8881).
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 6-15/16". Inlet diameter: 1.80".
Short-Style Pump for 1971-82 Corvettes 3/4" pilot shaft)
- Fits all 1971-82 S/B Corvettes.
- Has heavy-duty 3/4" ball/roller bearing.
- Dimension from block surface to hub: 5-13/16". Inlet diameter: 1.80".
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
How many grooves you looking for? I found two on ebay.
75 76 77 78 79 80 81 C3 Corvette 350 Water Pump Pulley New GM 14023159 | eBay
75 76 77 78 79 80 81 82 Corvette Dual Deep Groove Water Pump Pulley 14023159CJ | eBay
75 76 77 78 79 80 81 C3 Corvette 350 Water Pump Pulley New GM 14023159 | eBay
75 76 77 78 79 80 81 82 Corvette Dual Deep Groove Water Pump Pulley 14023159CJ | eBay
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Le Mans Master
Joined: Jan 2001
Posts: 6,672
Likes: 1,363
What year is your corvette?
I cannot really tell, but it seems like you are attempting to use a newer water pump on an older Corvette? Is that correct? If so, then it might be easier to just buy the correct pump.
Last edited by carriljc; Mar 14, 2016 at 02:25 PM.
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
no I have the correcr waterpump for a 71-82. Mine is 1980, my pump is installed and water in my system..doubt resoing with pump with 5/8 would be easier.
Le Mans Master
Joined: Jan 2001
Posts: 6,672
Likes: 1,363
OK, here is link to one of our supporting vendors...
Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
Perhaps yours has had the vette pulleys replaced with something else, so when trying to use a vette pump and pulley you have alignment issues. All the pulleys must be vette, no miss-match.
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
As posted I see that, I was wondering about the the belt clearance since the pump I have is 3/16 further forward than my original..mindblowing noone has never has same issue.
Drifting
Joined: Oct 2012
Posts: 1,524
Likes: 61
From: Medina Ohio
If you had a 5/8" shaft pump on there previously, which cannot be a 72-82 corvette specific pump, and everything lined up, then you didn't have corvette pulleys on the rest of your accessories which made it work.
Now that you put the corvette pump on, things are not lining up.
So you have two options. Use the corvette pump and match it with all corvette pulleys OR use a standard water pump and use the standard pulleys.
Correct me if I am missing your issue?
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
I'm not at home to check, but I think there are only a few possibilities going on.
If you had a 5/8" shaft pump on there previously, which cannot be a 72-82 corvette specific pump, and everything lined up, then you didn't have corvette pulleys on the rest of your accessories which made it work.
Now that you put the corvette pump on, things are not lining up.
So you have two options. Use the corvette pump and match it with all corvette pulleys OR use a standard water pump and use the standard pulleys.
Correct me if I am missing your issue?
If you had a 5/8" shaft pump on there previously, which cannot be a 72-82 corvette specific pump, and everything lined up, then you didn't have corvette pulleys on the rest of your accessories which made it work.
Now that you put the corvette pump on, things are not lining up.
So you have two options. Use the corvette pump and match it with all corvette pulleys OR use a standard water pump and use the standard pulleys.
Correct me if I am missing your issue?
Drifting
Joined: Oct 2012
Posts: 1,524
Likes: 61
From: Medina Ohio
I am not positive but I believe ive got corvette pulleys they have 5/8 shaft hole im told thats standard for corvette? Searches aeem to say corvette pulleys are also 5/8? This is what idk..if the only difference is 3/16 spacing ill shim the pulleys on now out and keep all the pulleys but i dont feel shimming will even be need to space them to match the waterpump sitting forqard 3/16 more. Also my car only takes 3 belts im not sure about yours?
So, you HAD a standard 5/8" water pump and pulley set. You bought the correct "corvette short" specific water pump that is correct for your year. Now it does not line up because your other pulleys/brackets are designed for a standard short pump.
You have two options that I stated previously. My opinion? It'd be easiest to return the corvette pump and buy a standard short water pump to get you back to where you were in the first place. If you want to keep the new "correct" pump, then you are going to have to replace all of the pulleys.
Thread Starter
Heel & Toe
Joined: Dec 2015
Posts: 24
Likes: 0
No. That's what we've been trying to help with. A 5/8 shaft hole is a "standard" short water pump, which was also used on 68-70 SBC C3 corvettes along with every other production small block. In 1971 the corvette water pump got weird and was unique ONLY to 71-82 Corvettes with the 3/4" pilot and an odd backspacing.
So, you HAD a standard 5/8" water pump and pulley set. You bought the correct "corvette short" specific water pump that is correct for your year. Now it does not line up because your other pulleys/brackets are designed for a standard short pump.
You have two options that I stated previously. My opinion? It'd be easiest to return the corvette pump and buy a standard short water pump to get you back to where you were in the first place. If you want to keep the new "correct" pump, then you are going to have to replace all of the pulleys.
So, you HAD a standard 5/8" water pump and pulley set. You bought the correct "corvette short" specific water pump that is correct for your year. Now it does not line up because your other pulleys/brackets are designed for a standard short pump.
You have two options that I stated previously. My opinion? It'd be easiest to return the corvette pump and buy a standard short water pump to get you back to where you were in the first place. If you want to keep the new "correct" pump, then you are going to have to replace all of the pulleys.