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Product ID: ICP-LSA
Interchangeable Crank Pulley Kit
Interchangeable Crank Pulley Kit
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Interchangeable Crank Pulley Kit

2009 & Newer Cadillac CTS-V, 2012 & Newer Camaro ZL1

This crank pulley kit is based on the Innovator's West replacement balancer assembly for the GM LSA engine.  This kit represents a clean and simple way to add boost and horsepower to your supercharged Cadillac or Camaro without making any permanent modifications. 

The Innovator's West balancer is precision-machined in the USA and installs directly in place of the factory unit.  The IW balancer and crank ring assembly weighs only 12.6 lbs, compared to 16.2 lbs for the factory steel unit.  Installation of this kit removes significant rotating mass from the front of the engine. 

Our CNC-machined crank pulley rings bolt directly to the new balancer using the provided fasteners.  Once the balancer assembly is installed, changing the outer ring to adjust the boost level is simply a matter of six the allen-head fasteners.  Crank pulley rings are also available separately and are listed elsewhere in this section.

We installed the IW balancer, 9.55" crank pulley ring, and 50mm idler pulley on our own CTS-V.  On ProDyno's chassis dyno, the car made 547 HP at the tires, right off the street, with a very safe tune.  The car showed a max boost level of 13.5 lbs (13.9 indicated on the dash gauge).

Image 4 (above) shows this crank pulley kit with the 9.55" ring, the 50mm idler pulley, the 100mm supercharger idler, and our 2.50" supercharger pulley.  This image of a 740 RWHP ZL1 Camaro is courtesy of Jason at Aspire Performance.

To complete your kit, please choose your desired crank pulley size below. 

Note:  The 9.10" and the 9.55" crank pulley rings require the use of our reduced diameter idler pulley http://www.metcomotorsports.com/proddetail.asp?prod=MIPDBR%2D50, listed elsewhere in this section.  The 10.00" & 10.50" crank pulleys require the use of our crank idler pulley relocation bracket (with the 50mm idler pulley), as shown here:  http://metcomotorsports.com/proddetail.asp?prod=MRB1000

Supercharger Belt Lengths:

+2 lbs 8.60" Crank pulley ring and stock idler pulley:  67.5" belt

+3 lbs 9.10: Crank pulley ring and 50mm idler pulley:  68.0" belt

+4.5 lbs 9.55" Crank pulley ring and 50mm idler pulley:  69.0" belt

+5.5 lbs 10.00" Crank pulley ring with 50mm idler pulley and idler relocation bracket:  71.5" belt

+6.5 lbs  10.50" Crank pulley ring with 50mm idler pulley and idler relocation bracket:  72.5" belt (estimated)

Note 1:  The original belt in most applications is 66.0" in length.

Note 2:  The Innovator's West part number for the balancer included in this kit is 840/1000.

Note 3:  The crank pulley rings may also be purchased in a 10-rib configuration for custom applications.  Please call for details on availability and pricing.

 
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Price: $724.99
 

 
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