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Underdrive Pulley Question.

  • Thread starter Thread starter SN95StangMan
  • Start date Start date Jan 25, 2004

SN95StangMan

New Member
Jul 5, 2003
1,292
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0
Lynwood, CA
Jan 25, 2004
#1
  • Jan 25, 2004
  • #1
Do underdrive pulley's have a smaller drive pulley(crank) and larger driven pulleys(alt&water pump)? My moron of a cousin said that they are all smaller, causing the belt to not have to turn the accesories as hard. That just doesn't sound right to me. Should I be looking for other family members to talk to?
Also, does anyone know the pulley size for a factory alternator?
Thanks
-Eddie
 

GTJake

Founding Member
Oct 28, 2002
3,049
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56
Ann Arbor, MI
Jan 25, 2004
#2
  • Jan 25, 2004
  • #2
Yes, crank pulley is smaller in diameter. The altenator and water pump pulleys are larger in diameter, causing them to sping slower and free up power.

Jake
 
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