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Speedway Reduction Pulley Combo for Small Block Chevy Short Pump

SAME DAY SHIPPING! Order within the next 15 hours 32 minutes and receive same day shipping

Specs
Material Type:
Aluminum
Sold in Quantity:
Kit
Finish:
Natural
Belt Type:
V-Belt
Belt Width:
.41
Belt Length:
32.00
Garage Sale:
No
Notes
ncludes crank and water pump pulleys. Two belts also included. 20% reduction.
Speedway Reduction Pulley Combo for Small Block Chevy Short Pump

Click image to enlarge

Please NOTE the following about this product:

  • This item is sold as a kit.

Details

Reviews

Q & A

What's in the Box

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

  • Upper Pulley Grooves:  Two
  • Lower Pulley Grooves:  Two 
  • Upper Pulley Diameter:  6-5/8" O.D.
  • Lower Pulley Diameter:  5-7/16" O.D.
  • Upper Pulley Snout Hole:  5/8" O.D. (can be drilled out to 3/4")

Fits Small Block Chevy V8 with '55-'68 short-style water pump 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.

Specs


Customer Reviews

Rated 4.5 out of 5 by 2 reviewers.
RATING BREAKDOWN
2 reviews
5 Stars
1
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

Crash
Verified Purchaser
Olivia, Texas

Bling and utilitarian in one

September 20, 2010
Used this with the Stewart short pump. Removed all of the factory crapola and saved almost a hundred lbs. and 7-8 inches of engine bay. (weight transfer attained).
Pros:
  • Removes 50 lbs
Yes, I recommend this product.
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Was this review helpful? 0 0

hilljob
salina,ks

pulley combo

March 01, 2010
if you dont run a fan and you are running flat head bolts,you have to countersink the pulley yourself,and you have to buy longer bolts for the lower pulley,but make sure you buy the allen head type as the regular hex head is too big and you cant get a socket on it
Pros:
  • Fits great and looks good
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

6 questions : 7 answers

2 answers

Using one belt to operate power steering pump? In a race application where power steering pump has 6" pully, would using one long belt to go around crank, water pump and power steering pump pull to many/to little rpms on power steering pump if you ran 7200 peak rpm on motor?

Factorystock51
July 17, 2014

Using one belt to operate power steering pump? In a race application where power steering pump has 6" pully, would using one long belt to go around crank, water pump and power steering pump pull to many/to little rpms on power steering pump if you ran 7200 peak rpm on motor?

Answers

March 04, 2015
myfordsbiggerthenyours
Well I turn 7k going into the turn and had no issue with the power steering keeping up I don't know what you asphalt or dirt but I run dirt track and we do a lot of steering and had no issue !
July 17, 2014
EricM
The lower pulley in this kit is 5 7/16" OD so you will be spinning the power steering pump 6524 RPM at 7200 engine RPM. As long as your power steering pump is capable of that RPM range then you will be fine.
1 answers

will this pully set fit a pontiac 350?

keeff
May 07, 2014

will this pully set fit a pontiac 350?

Answers

May 07, 2014
EricM
No this will fit small block Chevy engines with short water pump only. Sorry I do not have a pulley set for your application.
1 answers

Would it be detrimental to operation to use one of the belts to pull my power steering pump?

Mitch67
March 16, 2014

Would it be detrimental to operation to use one of the belts to pull my power steering pump?

Answers

March 17, 2014
EricM
No, it is very common to only use one of the supplied belts and then use one groove to run a belt around all three pulleys in order to operate a power steering pump.
1 answers

I do not understand how these pulleys are 25% reduction. By my calculations they are about 18%. Can you explain? thanks,

May 20, 2011

I do not understand how these pulleys are 25% reduction. By my calculations they are about 18%. Can you explain? thanks,

Answers

May 23, 2011
Jason
We apologize, this is actually a 20% reduction, there was an error on our website.
1 answers

Would it be okay to drill out the hole on the upper pulley to 3/4"?

adam
lincoln, ne
October 23, 2011

Would it be okay to drill out the hole on the upper pulley to 3/4"?

Answers

October 24, 2011
Jason
Yes, that is required if you have a 3/4" shaft water pump
1 answers

how do you get the belts on these pulley ?

Newbie
Va.Beach Va.
April 27, 2015

how do you get the belts on these pulley ?

Answers

April 28, 2015
Eric
Expert
We offer replacement belts part number 91015401
Page 1 of 1

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Water Pump ID Chart (GIF)

Item Details

Pair of Matched Belts, 32" length
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Speedway 1:1 Pulley Combo, Small Block Chevy Short Pump
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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 '55-'68 short-style water pump with either a 5/8" or 3/4" 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

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Kit includes a cast aluminum double groove cast aluminum water pump pulley, crank pulley, and a matched pair of heavy duty belts. Slows water pump speed by 30% for increased horsepower.

Fits Small Block Chevy V8 with '55-'68 short-style water pump with 5/8" shaft.

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.

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Universal Water Pump Shim Kit
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Water pump pulley shim kit provides proper drive belt alignment with pulleys.  Kit contains two aluminum 1/16" spacer and one 1/8" spacer.

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

Item Details

(2) 1/16" shims, (1) 1/8" shim