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.
BEST STREET PERFORMANCE INTAKE CAM
(NEW -- No Exchange Necessary)
This is a great street performance upgrade for all Weber cars.
This 12mm CB-12 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 a pair of C/B
#425 10.9mm cams. Duration 254 degrees @ .050"
lift. TOTAL DURATION 292. Base circle diameter 1.030,"
- Installed as INTAKE CAM it
makes a smooth step up from stock cams, and brings the engine
power a pleasant boost by raising the torque curve mostly on the
- Install with a 10.9mm Columbo & Bariani CB-11 as
exhaust cam to maintain low end and
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
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.
- Locktab furnished with cam.
- The base circle is unduercut to 1.025."
(standard is 1.080") on this high lift 12mm performance cam to
eliminate lobe interface with follower bores.
- Bolt in with no clearance issues with any
- Use our basic VSS12 performance valve
- 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. We can only guarantee satisfaction with Spruell
- Extra lock tabs $3.00 eacj (in addition to one furnished
- Set of followers, add $145.00.