At Borowski Race Engines, we like to use fully counterweighted crankshafts in our engine builds. We believe the additional cost of 8 versus 6 counterweights is more than offset by the value delivered in engine longevity and performance. This design increases the stiffness of the crankshaft and reduces harmonics. The direct result is reduced flexing of the crank. The indirect results are greatly improved bearing life and a much stronger bottom end, particularly with a GM LS block.
Callies offers these center counterweighted cranks in their Compstar, Magnum and Ultra Billet lines for LS engines. We use the Compstars for naturally aspirated builds and light boost before trading up to the Magnums at more than twice the price for heavier boost and higher horsepower.
We really like how the center counterweights work to stabilize the bottom ends of stock GM blocks. We typically use the stock stroke with boost and the 4.000" stroke on naturally aspirated builds like the one in the video.
We got Callies' Brook Piper to tell their story while at Lights Out 2021 at South Georgia Motor Sports Park. Watch the video to hear firsthand what he had to say.
Seen enough? Hit the BUT IT NOW button to order or give us a call at 815-725-2727 if you need anything from one of these cranks to a complete engine build.
LS1 GM Small Block
Strokes we inventory: 3.625", 4.000"
Rod Length: 6.125"
Pins: 2.100
Bob weight: 1900
Reluctors: 24, 58
We are authorized Callies dealers and can get you any of their products and can pair them for you with other engine parts as we do with our own builds.
BUY YOUR PARTS FROM PEOPLE WHO USE THEM!