Street High Performance upgrade for all Weber cars. Our #424 11mm cams are
similar to the factory AUTODELTA 11mm 1750/2000 performance
profile with the modified opening profile for good lowend torque
and idle. Midrange and top end are superb with no flat spot.
Duration 254 degrees @ .050" lift.
THERE ARE TWO SETUP COMBINATIONS: Mid-range will be about the same
with both setups.
BASIC SETUP -- A pair of these SA424 cams. as intake and exhaust, will
be aggressive enough to be strong up to 7500 RPM, with great top end for track
events and still be docile enough for street. Our street performance
2.0 10.5:1 COMPRESSION test engine made 171 HP with very
good low end torque and idle.
ULTIMATE STREET SETUPS: Enhance top end for those track days by using
this SA424. as exhaust with #445 intake. Sorry no dyno test results for
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.
- Our cams have super durable lobes that are first hardwelded,
before precision webcam regrinding.
- Bolt in with no clearance issues with any
- Our cams have super durable lobes that are first hardwelded before
- To minimize lobe interference with follower bores with high lift
performance cams, the base circle is undercut to
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 Motorsport followers.
*CAMSHAFT EXCHANGE CORES REQUIRED
Sorry, but we are no longer able to fill customer camshaft orders
without exchange cams in hand. Even after we upped the core charge from
$50 to $75, very few cam cores were returned -- no exceptions. VERY
IMPORTANT: Read about core return conditions in "Additional Product
Information" on the menu.