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Scram Speed
V-Belt Underdrive Crank Pulley for BB/SB Mopar
This powder coated underdrive crank pulley adds horsepower and great looks to your Small Block, Big Block or Magnum engine - note that Magnum may require swappi…
SKU:
10091
Shipping:
Calculated at Checkout
$129.99
This powder coated underdrive crank pulley adds horsepower and great looks to your Small Block, Big Block or Magnum engine - note that Magnum may require swapping balancer to enable use of this pulley.
Typical improvements of 5-10 rwhp have been observed. Note also that the stock crank pulley is large enough to spin the alternator at 12,000 RPMs during extended 6000+ RPM operation. Most alternators cannot withstand that kind of abuse, so save yourself an alternator replacement and a bad day at the track!
Typical improvements of 5-10 rwhp have been observed. Note also that the stock crank pulley is large enough to spin the alternator at 12,000 RPMs during extended 6000+ RPM operation. Most alternators cannot withstand that kind of abuse, so save yourself an alternator replacement and a bad day at the track!
This powdercoated underdrive crank pulley adds horsepower and great looks to your Small Block, Big Block or Magnum engine.