Camshaft for STREET PERFORMANCE (Colombo & Bariani) 10.9mm Lift Mild HP Increase
STREET PERFORMANCE (NEW – No Exchange Necessary)
All of our street/performance cams are daily driver friendly with gentle opening ramps for good idle and transition with no lag or flat spots. Our custom designs have progressively more top end. (82-89 USA SPIDERS WITH BOSCH EFI MUST DO WITHOUT VVT FEATURE)
This Colombo & Bariani cam is a great street performance upgrade for all Weber and Spica cars. These 10.9mm cams are similar to the factory European 1750/2000 performance profile with the same good low-end torque, better midrange, and a lot more top end. Duration 244 degrees @ .050″ lift. Base circle diameter 1.030,” Standard 1.075.
BASIC SETUP: A pair of these 10.9MM CB-11 Cams is a smooth step up in performance from the stock cams, and brings the engine power a pleasant boost by raising the torque curve mostly on the low end.
HOTTER SETUP: Substitute our CB-12mm cam on the intake side. For street performance with emphasis on top-end performance. Up to mid-range will be about the same with both setups. This combination is the most popular street combo on the planet.
PORTING: Cleaning up the bowls from valve seats to back guides is quite sufficient for street performance cams without enlarging the runners. Full porting is marginally 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 effect 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 with our Spruell Motorsport free flow headers.
- Lobe Base Circle 1.060″ (STANDARD 1.080″).
- Bolt-in with no clearance issues with any piston.
- We strongly recommend upgrading to VSS12-1 springs for 11.6 and 12mm lift cams.
All new cams should be installed with new followers. We can only guarantee our cams when installed with new set of Spruell Motorsport followers.