Anytime you upgrade the camshaft from the stock one, we highly recommend running either Comp Cams or Crow Cams 105# valve spring, or the very common LS 90 lb valve spring, along with Revhigh Modified retainers, LS7 lifters, 7.00" pushrods, and you can either run the stock timing chain with a new replacement dampener or the best option is the Rollmaster double timing chain, Extra thick front cover gasket, and Machined oil pump cover.  However all of these upgrades are not always required, they are just a very good combo that works very well together.
The REV1 cam was designed for naturally aspirated applications where emissions and street-ability are important. It will generally not set SES lights. The REV1 cam uses steep ramp rates and tight base lobes to keep the computer and the sniffer happy while still providing great performance. This cam does not set the P0300 code and can be installed on a stock 3.8L all the way to radical. It was designed for the NA 3.8l but will also work well with nitrous or intercooled boost. It is the only major 3.8l grind on the market that does not need a converter or gear changes to see gains. The REV1 can be used on stock heads with stock springs and retainers but upgrade to 90 or 105s is recommended along with higher shift points.
Look for gains of 30+ HP depending on your car's current configuration with a drop of 1/2 sec in the 1/4 mile.
210°/210° at .050"
Intake Lift .317" (.507" lift at 1.6:1 rocker ratio)
Exhaust Lift .317" (.507" lift at 1.6:1 rocker ratio)
113 LSA
 
The REV2 cam was designed for NA applications with maximum HP in higher rpms. It is recommended to upgrade the valve springs (125# or higher), modified retainers, and LS7 lifters. It has a lopey idle and performs best with a higher stall speed torque converter. Click here for REV2 sound clip
This cam was designed for naturally aspirated applications where maximizing the performance of stock heads is important. It will set the P0300 code unless programmed out of the PCM. Idle is lumpy, especially with headers. Raised shift points (6500), raised rev limiter (7k), and gears/converter are all recommended.
Look for gains of 40 HP depending on your car's current configuration.
216°/216° at .050"
Intake Lift .317" (.507" lift at 1.6:1 rocker ratio)
Exhaust Lift .317" (.507" lift at 1.6:1 rocker ratio)
111 LSA