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Camshaft STREET (Columbo & Bariani) 12.0mm Lift More Performance Increase


This is a great street performance upgrade for all Weber cars. This 12mm  C/B INTAKE CAM is the tried and true Columbo & Bariani street performance camwith good low end torque, better midrange and a lot more top end than the C/B #425 10.9mm cam.  Duration 292 degrees @ .050" lift.

  • This 12mm C/B INTAKE CAM is still a smooth step up from stock cams, and brings the engine power a pleasant boost by raising the torque curve mostly on the top end.
  • Pair with our 10.9mm Columbo & Bariani #425 cam on the exhaust side to maintain low end and mid-range performance. 

PORTING:  Cleaning up the bowls from valve seats to back guides is quite sufficient for street performane cams without enlarging the runners.  Full porting is marginaly appropriate for street unless you plan to do track days.  Enlarging the ports enhances gain from midrange up and pays handsomely above 7000 rpm.

VALVES:  Enlarging the window into the chambers with our 1mm oversize valves is equally valuable and lets cams have full affect for both street performance and race.

HEADERS:  Cam and porting do make a big difference on their own, but these enhancements will only reach their full potential without free flow headers.


  • Standard lobe base circle, 1.080"
  • Bolt in with no clearance issues with any piston. 
  • Use our basic VSS12 performance valve springs
  • We strongly recommend upgrading to VSS12-1 springs for 11.6 and 12mm lift cams.
  • All new and reground cams should be installed with new followers.  There is risk of damage with old followers. Unfortunately, there are inferior quality followers on the market and we can only guarantee satisfaction with Spruell Motorsport followers.

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Spruell Motorsport Alfa is your source for performance parts for Alfa Romeo.
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