Camshaft FAST ROAD/TRACK DAY 12.0mm High Performance

Camshaft FAST ROAD/TRACK DAY 12.0mm High Performance


SKU: SA445 Category: Tag:

Camshaft FAST ROAD/TRACK DAY 12.0mm High Performance


SKU: SA445 Category: Tag:


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 #445 12.0mm lift cam is a very special Jim K design.

Installed as INTAKE CAM with 11.0mm SA424 EXHAUST CAM, the broad smooth power band makes it very popular for street performance, as well as rally and vintage racers. This combination is renowned for both remarkable low-end torque and top end. Duration @.050″ 266 degrees. Base circle diameter 1.030,” Standard 1.075.

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.


  • Our race cams have super durable lobes that are first hardwelded before precision regrinding.
  • To minimize lobe interference with follower bores with high lift performance cams, the base circle is undercut to 1.030.” (STANDARD IS 1.075″)
  • We strongly recommend upgrading to VSS12-1 springs for 11.6 and 12mm lift cams.


Some cam profiles will not fit our performance cam billets. Race cams must be hard welded and reground.

Sorry, but we are no longer able to fill these customer camshaft orders without exchange cams in hand.  All new cams should be installed with new followers. We can only guarantee our cams when installed with new set of Spruell Motorsport followers.

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USA Spruell Motorsport


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