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Speedway 1:1 Pulley Combo for Small Block Chevy Long Water Pump

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Speedway 1:1 Pulley Combo for Small Block Chevy Long Water Pump

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Details

Reviews

Q & A

What's in the Box

Kit includes a cast aluminum double groove water pump pulley and double groove crank pulley, and a matched pair of heavy duty belts. Has a 1:1 water pump/crankshaft speed ratio.

Fits Small Block Chevy V8 with '69-'86 long-style water pump.

Note: The lower crank pulleys in our combo kits are manufactured thicker than normal stock pulleys.  This requires longer 3/8" bolts to be purchased separately.  Allen head type bolts recommended.

Get the correct pulleys for your application by learning which water pump you have as explained in our tech article. SBC - Short vs Long Water Pump

 

Customer Reviews

Rated 3.5 out of 5 by 2 reviewers.
RATING BREAKDOWN
2 reviews
5 Stars
0
4 Stars
1
3 Stars
1
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

rob111
Verified Purchaser

product is tough

February 24, 2013
Only issue i have is the lower pulley is alot thicker than a stock one. and now i have to find a longer grade 8 fine thread bolt to mount it securely to the crankshaft. Its not an issue just would be nice to have known or had the longer bolt come with the set.
Yes, I recommend this product.
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BoneStock79
Verified Purchaser
Upper Sandusky, Oh

Pulley combo review

September 09, 2012
Awesome product that is as stated in the magazine. Direct fit. Even dropped my coolant temp by 20 degrees. Only con i have with the purchase is i had to run back to town to get longer crank bolts because the stock ones will not fit.
Pros:
  • Increases Power
  • Easy To Install
  • Improves Engine Efficiency
  • Lightweight
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

4 questions : 4 answers

1 answers

What is the distance from the fan snout to the back of the water pump pulley? And what is the distance from from where the lower pulley mounts to the ouside of the pulley?

dmann12
March 03, 2015

What is the distance from the fan snout to the back of the water pump pulley? And what is the distance from from where the lower pulley mounts to the ouside of the pulley?

Answers

March 03, 2015
EricM
The upper pulley is 2 5/8" deep from the water pump mount face to the back edge of the pulley. The lower pulley is 2 7/8" deep from the balancer face to the front edge of the pulley.
1 answers

what is the diameter of the bottom pulley

midnightexp
December 12, 2014

what is the diameter of the bottom pulley

Answers

December 12, 2014
EricM
Both upper and lower pulleys are 5 7/16" OD.
1 answers

what size is the pilot holes on these pully's

westerly, ri
December 14, 2011

what size is the pilot holes on these pully's

Answers

December 15, 2011
Jason
The pulley's have a 3/4" id pilot hole. Top pulley also comes with a bushing to sleeve down to 5/8"
1 answers

what is the difference in these and the 20% reduction pulleys? are these about the same size as a stock 350 pulley set?

Travis
Jasper Alabama
June 22, 2015

what is the difference in these and the 20% reduction pulleys? are these about the same size as a stock 350 pulley set?

Answers

June 22, 2015
Eric
Expert
These pulleys are smaller than stock pulleys but these will turn the water pump the same speed as the crankshaft. Our 20% reduction pulleys have a larger water pump pulley and will turn the water pump 20% slower than the speed of the crankshaft.
Page 1 of 1

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Learn more about using different water pump accessories to best fit your application by reading our tech article.  SBC - Short vs Long Water Pump

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Combo includes cast aluminum double-groove aluminum water pump pulley, crank pulley, and matched pair of heavy duty belts. Slows water pump speed by 20% for increased horsepower.

For Small Block Chevy V8s with '69-'86 long style water pumps with 5/8" shaft.

Note: The lower crank pulleys in our combo kits are manufactured thicker than normal stock pulleys.  This requires longer 3/8" bolts to be purchased separately.  Allen head type bolts recommended.

Get the correct pulleys for your application by learning which water pump you have as explained in our tech article. SBC - Short vs Long Water Pump

Bolt Kit for 1:1 Long Water Pump Pulley Combo
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Replacement pairs of matched belts for Speedway small block Chevy cast aluminum pulleys for long water pump.

Water Pump ID Chart (GIF)