SKU: 21749674

1880 1971-1990 Chevy GMC 1971-1982 Corvette Short 3/4" shaft for 305 350 374 water pump

Sale price$146.66 Regular price$162.95
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Description

1880 1971-1990 Chevy GMC 1971-1982 Corvette Short 3/4" shaft for 305 350 374 water pumpFlowkooler's pump 1880 for a small blocks with the short height and the 3 4" pilot shaft has a 16 blade skip vane impeller that is CNC machined from billet aluminum. An increased vane count and a reduction in the plate impeller clearance achieves greater flow rates, higher head pressure and a more efficient flow than other OEM water pumps. It is then surface coated with a military grade type II Class II anodized finish. FlowKooler introduced the first

Flowkooler's pump 1880 for a small blocks with the short height and the 3/4" pilot shaft has a 16 blade skip vane impeller that is CNC machined from billet aluminum.  An increased vane count and a reduction in the plate-impeller clearance achieves greater flow rates, higher head pressure and a more efficient flow than other OEM water pumps.  It is then surface coated with a military grade type II Class II anodized finish. 

FlowKooler introduced the first hi flow pumps and continues to improve impeller design. Why is increased flow so important to cooling a hot small block engine? Because it has been proven time and time again that reducing the cycle time between the heat source and the heat sink creates more opportunities to shed heat and drop engine temperatures.

From 0-3,300 RPM…Nothing Beats a FlowKooler!

General Specifications:
Type of Material of Pump Body Cast Aluminum
Number of Blades on Impeller 16 CNC Aluminum
Direction of Rotation CW or CCW
Pump alternatives Pump 1683 for cast iron
Fan Hub Working Height 5 13/16"
Shaft Diameter 3/4"
Inlet Outside Diameter 1 7/8"
Hose Connections 1st 2nd
Gender F F
Diameter 3/4" 1"
Threaded Yes Yes
Other Special Features:
  • CNC Machined Aluminum impeller with 16 vanes
  • Protected with a military grade Type II Class II surface coating
  • 3/4" impeller shaft
  • Double fan blade bolt pattern on hub
  • Shaft extends past the fan hub .400" 
Parts Contained in Box:
Mounting Gasket, Installation Sheet, FlowKooler Decal
Make Model Year Block CID Liters
chevrolet corvette 1980 V8 305 5.0L
chevrolet corvette 82-71 V8 350 5.7L
chevrolet med/hd series 40 80-73 V8 350 5.7L
chevrolet med/hd series 50 90-73 V8 350 5.7L
chevrolet med/hd series 60 90-73 V8 350 5.7L
chevrolet med/hd series c50 86-80 V8 350 5.7L
chevrolet med/hd series c60 1983 L6 374 6.1L
chevrolet med/hd series c60 1983 V8 366 6.0L
chevrolet med/hd series c60 90-80 V8 350 5.7L
gmc c5000 86-80 V8 350 5.7L
gmc c5000 89-87 All All  
gmc c6000 90-80 V8 350 5.7L
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21749674

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saygoconsultingms
Omaha, US
★★★★★ 1
Poor fit
Size: 42, Color: Black With Golden Yellow
Poor fit and drape is consistent with the low price
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Reviewed in the United States on November 2, 2025
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kh53
Whiting, US
★★★★★ 5
Good value
Size: 40, Color: Black With Black Strip
My husband and brother in law both found these pants to fit a little smaller than regular dress pants.....mostly they were tighter in the thighs but the length/waist was perfect. They each ordered a size or two up and had the pants tailors to fit. They looked very sharp and were of a good quality considering they were not super expensive. I hope they have the chance to wear these more often!
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Reviewed in the United States on December 6, 2013
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Amazon Customer
Alexandria, US
★★★★★ 5
Great Shoes
Size: 10, Color: Cognac
Love these shoes super comfortable and look great. Everyone asks me where I got them.
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Reviewed in the United States on May 20, 2026
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Amazon Customer
Omaha, US
★★★★★ 5
Beautiful shoe but too narrow
Size: 10 Wide, Color: Navy Grainy Leather
Too narrow
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Reviewed in the United States on May 24, 2026
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Tim Arnette
Omaha, US
★★★★★ 5
Looks good feels good
Size: 13 Wide, Color: Black
I've had them 2 weeks and love them. Took a little breaking in but they feel great now.
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Reviewed in the United States on April 8, 2026

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