Part# KB5603-8 ~ Stage 1 Holden 253 308 V8 hydraulic performance street camshaft custom ground for a tough sounding idle and low down torque. Maxium performance and drivability in street modified engines.

This camshaft suits the early heads only, i.e. carburettor engines 1970-1988.

Stage 1 cam’s torque band is strongest from 1500rpm to 4500rpm, and can use with stock stall converter in most cases. The power range of the cam is from 2000 to 4800 rpm.

A stage 1 cam will work ok with standard exhaust manifolds and a low restriction exhaust however our Hot Rod Cams series wok best with higher compression engines 9.5:1 or better, headers and a free flowing exhaust system, 600 cfm vac sec Holley carb or 600cfm Holley double pumper on a 4 barrel manifold.

Camshaft Specifications;
Advance Ground on Cam; 2 deg, Lobe Separation; 108 deg, duration @ .050 inch = 214 deg Total duration = 280, valve timing INT 34/66 EX 70/30, Valve Lift .486 inch, Power range 2000-4800 rpm. Install straight up on timing marks.

This performance camshaft requires good quality cam followers and new performance valve springs. To get the best out of your new combination you do not want bad cam timing so we recommend new timing chain or new timing gears, especially for those guys with later engines which will have pollution control valve timing.

MATCHED PARTS

Recommended performance valve springs to suit click here
Recommended performance hydraulic lifters to suit click here
New Timing chain gears click here
New Push Rods click here
Roller Rockers click here
AussieSpeed Manifold click here
Holley Carburettor click here

IMPORTANT: These high performance components should be checked for suitability by the person installing them as engines of the same group can vary in valve length, spring installed height, and Collet groves.

It is the sole responsibility of the installer to check suitability.

To ensure your camshaft is the correct model for your application place the new cam next to the your old cam and check the following points.
Do the lobes all point the same way?
Are the holes or groves in the bearing journals the same?
Is the distributor gear the same size and angle and position on the camshaft?
Is the fuel pump lobe in the same place on the camshaft?

IMPORTANT INSTALLATION INFORMATION

IT IS THE SOLE RESPONSIBILITY OF THE INSTALLER TO CHECK SUITABILITY & RUNNING THE CAMSHAFT IN PROPERLY

This camshaft must be installed with new cam followers and good quality performance valve springs. All engines will vary due to machining so check engine for correct rocker arm geometry and push rod length. This camshaft has a higher lift than standard so check valve springs for coil bind and retainer to top of the valve guide clearance at full valve lift when installed. You also need to check valve to piston clearance and the camshaft timing marks on the timing chain are lined up. All these checks need to be done before you start the engine. Correct cam lube needs to be applied during engine assembly and lifters [cam followers] need to be primed with oil. The lifters should rotate freely in their bores. This camshaft needs to be run in at 2500rpm for at least 20minutes to ensure plenty of oil pressure is present to drown the cam and lifters in lubricant during the run in period. Refer to our web site for more information, specifications, cam set up and tuning tips.

Disclaimer: All performance modifications will most likely alter exhaust emissions. This means that for later model cars that need to comply with exhaust emissions standards you install these performance parts at your own risk. All Performance parts sold through or made by Kustom Bitz are intended for off road use only.

KustomBitz product & installation disclaimer;
Indemnity: The installer/purchaser shall indemnify Kustom Bitz, the author, its consultants, personnel and all others involved in providing our goods and services in respect of any claims, demands, damages, proceedings, costs, charges and other expenses caused by, arising out of or in any way connected with any special, consequential, direct or indirect loss, damage, harm or injury suffered by any person arising out of this web site, document, publication, the sale or the goods and services supplied pursuant to it.