• Cylinder Head Packages
• Cylinder head Gaskets
• Roller Rocker Arms
• DRM Custom Camshafts
• Valve Train Components
• Rotating Assembly Components

• LT1 Timing Sets 1992-94
• LT1/LT4 Timing Sets 1995-96
• Oil Pans
• Oil Coolers
• Oil Filter Inspection Tool
• Aluminum Radiators
• Aluminum Radiator with oil cooler
• Thermostats

Cylinder Head Porting Service

Cylinder head porting is recognized as one of the single best ways to boost an engine’s torque and horsepower. But all porting is not alike. Years of building race engines and street engines has taught DRM first hand that just because it works on the track doesn’t mean it’s right for the street. This experience allows DRM to choose which cylinder head and which porting treatment is correct for your specific application. Optimal port size and shape is painstakingly created by hand at DRM and a Super Flow 600 flow bench is used to check progress. No port is considered done until it is tested for power improvement either on the engine dyno or chassis dyno. Once a port is approved, DRM then chooses whether to digitize the port for CNC porting or continue to port it by hand. Whichever way brings the best product to the customer at the best value is selected.

LT5 Cylinder heads

Cylinder Head Packages

DRM offers several cylinder head packages from street performance to all out racing. Packages are tailored to your specific application and feature DRM porting, matched with stainless steel valves, valve springs, retainers and seals. Call for specifications related to your application.

LT1/LT4 Cylinder Heads

Roller Rocker Arms

The roller rockers used and sold by DRM feature a rigid, extruded aluminum body, delivering long term durability and precise ratios. Their full roller bearing fulcrum dramatically reduces frictional losses resulting in a cooler running valve train. All this adds up to more reliability and increased horsepower. Rockers for L-98 and LT1 engines are small in size to minimize valve cover modifications. Additional components may be required for proper installation.

Note: Use of roller rockers may require the guideplates and rocker arm studs to be changed.

DRM Camshafts

Cam Doctor

One of the instruments used by DRM in the process of camshaft development is the Cam Doctor. It measures and maps out the cam lobes allowing for careful analysis of its profile

Each camshaft offered by DRM is a product of extensive in-house testing. Cams are especially developed to deliver maximum increases in both torque and horsepower, while maintaining all aspects of driveability. Custom off-road only race cams are also available upon request.

Valve Train Components

DRM carries a full line of high performance springs and retainers designed to fit your LT1/LT4 or LS1/LS6 Cylinder Head, and match up perfectly to your camshaft’s specifications.

Rotating Assembly Components

DRM engine kits feature only the best components available, all of which are suitable for street and competition. From stroker crankshafts to custom, lightweight pistons, DRM can meet all your engine building needs.

LT1 High Performance Timing Sets

Racing and high engine speeds demand bullet proof parts. DRM high performance timing sets are machined from billet steel and meet the demanding needs of drivers who push their LT1 engines to the max.

LT1/LT4 High Performance Timing Sets

Billet cam, crank and water pump gears, heavy duty roller chain.

Note: 1995-96 Optispark and front cover are needed to install this kit on 1992-94 models.

Oil Pans

With a stock pan, heavy cornering, braking and acceleration force oil away from the pick up screen, temporarily starving the engine of oil. Also, high engine RPMs create horsepower-robbing windage. The DRM high capacity racing oil pan features a windage tray and a series of baffles and trap doors to control oil flow under all conditions. Pan comes with replacement pick up tube. 

C5 Corvette High Performance Aluminum Radiator with Integral Oil Cooler

This high capacity aluminum radiator has a internal engine oil cooler that will dramatically increase the cooling capacity of C5 Corvettes.  This is ideal for anyone with a modified engine or operating in extreme conditions such as hot arid climates, autocrossing and road racing applications.  For cars with automatic transmissions a similar radiator is available without the engine oil cooler.  This radiator will cool engines up to 650hp.  The kit comes complete with Aeroquip braided lines, necessary hardware and fittings.

Thermostats

Keeping water temperatures low can mean higher horsepower and fewer worries in hot weather. DRM has thermostats for all climates, all with special air purge holes to eliminate pockets of air that can cause overheating.