Secrets Magazine INDEX

CRANKSHAFT PULLEYS

UPDATED   4/28/2022
NOTE:
Steel prices have increased.
When present stock of Pulleys are exhausted
expect new higher pricing.

In the 1930’s George Riley, the famous race engine designer, discovered that stock Model "A" water pumps would spin too fast for the best rate of cooling at higher engine RPMs, like normal traffic today. 


If you drive fast you'll need this important part . . . 

If you race, this is the one that won't explode from centrifugal force. 

FIT FORD MODEL "A" & "B" (1928-1932)  ENGINES

Steel, one piece, machined from billet. 
  • "An exceptionally fine piece of equipment!" 
  • Finest quality, precision, fully CNC machined and balanced.
  • Hi-Speed design has a reduced diameter to 3-1/2".
  • Reduces water overflow by slowing pump RPM approximately 28%. 
  • BEST for higher road speeds.
  • Precision degree timing marks.
  • USE OUR V-BELT, sized slightly shorter for a neat appearance.
  • ALTERNATOR: Normal charging occurs after a quick rev-up to 1500 rpm.
  • GENERATOR: The 3rd brush can be moved to increase charge.
  • FRONT OIL SEALSteel pulleys last many engine lifetimes. Aluminum pulleys allow the crank oil seal to cut into the soft pulley shank. Aluminum can "give" at the crank nut or mount bolt.
  • SAFETY: Steel pulleys do not explode or crack like cast iron pulleys 
  •  in high speed environments.
  • Be safe, Steel is required by serious professionals.

CRANKSHAFT PULLEY -Small 3.5"
HI-SPEED
$115.00      IN STOCK
(our best seller)
Comes with grade-8 bolt and washer.
  • Black Oxide coating.
  • 3.5" diameter Hi-Speed sized.
  • Uses 5/8" Belt
  • Optional belt listed down below.
DUAL CRANKSHAFT AC PULLEY
HI-SPEED
 $150.00       
IN STOCK
DESIGNED FOR USE WITH
 air-conditioning
CAN BE USED FOR OTHER APPLICATIONS
  • Steel with timing marks and hardware.
  • 5/8" and 3/8" belts
  • 5/8" belt runs true to pump and gen/alt
  • 3.5" diameter
CRANKSHAFT PULLEY-large 5.5"
HI-SPEED
LARGE  5.5"  Dia. Ford Stock Size
STEEL Single 5/8 BELT

$209.50.00         IN STOCK
Steel, with grade 8 bolt and washer. Has timing marks.
  • Matches stock pulley mechanical specs.
  • 5/8" belt - 5.50" diameter (stock size)

  • - ALSO -
  • Available in 
  • DUAL CRANKSHAFT-Large Dual
  • 5.5" DIA x TWO 5/8" SHEAVES
  • outer belt runs true to pump and gen/alt.
  • Hi-Speed
  • $385.00
  • (Special Order-PLEASE CALL)
DUAL CRANKSHAFT PULLEY-Small dual 5/8 belts
HI-SPEED
3.5" diameter - steel
Steel, Dual 5/8" belts
$185.00      IN STOCK
Two 5/8" belts - 3.5" Dia. (Hi-Speed)
With grade 8 bolt & washer
Timing marks
Uses are varied.
Run optional like "blowers" and "air conditioning" equipment.
MOUNTING BOLT & WASHER
$10.00         IN STOCK
Grade 8 Bolt is to be torqued to 125 foot pounds of torque.
  • This set comes with each pulley.             
V-BELT 5/8"
 $14.95           
IN STOCK

Our smaller V-belt 

takes up the combined slack of our 3.50" crank pulley and swings the alternator or generator back up to its normal position.

Scalded Dog Speed Parts, 3860 Cain Run Rd, Batavia OH 45103.
Phone 513-724-0700, email  [email protected]