Rollmaster timing sets are manufactured by Precision Cam Drives of Australia and feature the finest quality high tensile German made seamless roller chain. Precision machined single piece billet crank and cam sprockets, and nine position cam timing adjustability via multiple keyways on the crank sprocket  (+/- 8 degrees in 2 degree increments)

The adjustable timing allows you to tune your cam timing for better peak power, or better low end torque (NOTE: it is recommended to check piston to valve clearances when changing cam timing. Failure to do so may result in serious engine damage).

The single row set is a direct drop in replacement for the factory timing set. Simply remove the factory crank and cam sprockets, with the chain, transfer the cam positioner magnet from the factory cam sprocket to the new roller sprocket, and install the new timing set.

To run the *double roller, the balance shaft gear must be removed. To save additional weight the balance shaft can removed altogether but this requires plugging the rear oiling hole. The Rollmaster has a much tighter fit, so the timing chain tensioner is no longer  used.  Since this chain is larger, we recommend swapping your oil pump cover for our Machined version, and run our Extra Thick Front Cover Gasket.

Double chain sets are recommended for engines running aftermarket valve springs.
*Due to potential front cover clearance issues on some cars, we recommend running our thicker front cover gasket and our machined oil pump cover when installing the double roller.  
The Cam position sensor magnet pushes in from the backside in the hole  that is recessed.

Rollmaster double timing sets are the strongest very best timing set available on the market for the 3800 Series II and Series III engines.  Used for both naturally aspirated and supercharged L67, L32, L36 and L26 engines.  Nothing is better.  A must have for upgraded performance camshafts.

Example 3.8L GM vehicle compatibility:  1997-08 Pontiac Grand Prix, 1996-2005 Pontiac Bonneville, 2000-05 Chevy Impala and Monte Carlo, 1997-2005 Buick Regal and 96+ Park Avenue, 2006-07 Buick Lucerne, 1996+ Buick LaSabre, 1996 to 2002 Chevy Camaro and Pontiac Firebird, 1995-99 Buick Riviera and L67 and L36 Holden Commodores.  Will not work for the older series I 3800 engines.  Only the Series II and Series III 3800 engines.  Both Supercharged an naturally aspirated.  We sell a thicker front cover gasket to accommodate the needed spacing for the front cover or you can double a stock gasket.

Thanks for shopping!