Supercharged 496 Motor - Cylinder Heads

Four ultra-thin steel layers make up the .040-inch thick gasket. Rivets in the corners (sticking out beyond the block) hold the layers together.
Four ultra-thin steel layers make up the .040-inch thick gasket. Rivets in the corners (st
After dropping the gaskets down onto the block dowel pins, the next step is installing the ARP 135-4001 head studs. The studs provide even pressure distribution for maximum strength under pressure.
After dropping the gaskets down onto the block dowel pins, the next step is installing the
We decided to stick with a common theme, and selected a pair of Holley aluminum square-port cylinder heads, which come fitted from the factory with 2.25-inch stainless steel intake and 1.88-inch stainless exhaust valves, screw-in studs,and guideplate
We decided to stick with a common theme, and selected a pair of Holley aluminum square-por

We had Mike Slover of Slover's Porting Service in North Hollywood, California, smooth the ports, transitions, ramps, and combustion chambers. He also port-matched the supercharger intake manifold for maximum flow. We're convinced this porting job helped achieve the rat's gargantuan power numbers.
We had Mike Slover of Slover's Porting Service in North Hollywood, California, smooth the
The ARP kit originally came with six-point nuts, but our six-point socket didn't fit into the machined boss in the cylinder head. A phone call to ARP headquarters and a one day wait netted a complete set of 12-point nuts, which allowed us to use a thin-wall socket to do the trick.
The ARP kit originally came with six-point nuts, but our six-point socket didn't fit into
Again using a torque wrench, it's extremely important to torque the head studs in the standard Chevrolet pattern using ARP moly lube.
Again using a torque wrench, it's extremely important to torque the head studs in the stan

With the cylinder heads torqued down, we installed a Lunati Weiand 02002 supercharger cam, which features 224/234 duration at .050-inch, with .498-/.520-inch gross valve lift and 112-degree lobe centers. The wide lobe centers will work to keep the boosted charge in the combustion chamber for maximum power.
With the cylinder heads torqued down, we installed a Lunati Weiand 02002 supercharger cam,
The Lunati double roller billet timing chain features a notched crank gear that allows you to install the cam in several degrees of advance or retardation. We elected to install the cam straight-up at zero advance.
The Lunati double roller billet timing chain features a notched crank gear that allows you
The billet gear and high-quality chain will provide optimum timing and strength, even under harsh dyno test conditions.
The billet gear and high-quality chain will provide optimum timing and strength, even unde

In an effort to match the valvetrain with our cam, we used a set of Lunati 1.7:1 billet aluminum needle bearing roller rockers.
In an effort to match the valvetrain with our cam, we used a set of Lunati 1.7:1 billet al
Properly tightening the rocker arms involves dropping each arm onto a 7/16-inch stud, then turning the motor to top dead center. Starting with the number one cylinder, turn the engine until you feel air blow out of the spark plug hole. Then tighten then lock with an wrench slowly while wiggling the pushrod. When the rod spins freely but has no play, tighten the wrench a 1/4 turn and tighten the locknut.
Properly tightening the rocker arms involves dropping each arm onto a 7/16-inch stud, then
We had to notch one rocker arm on each side to clear the Granatelli Motorsports sheetmetal valve covers. Slightly rounding one edge with a bench grinder won't significantly weaken the rocker arm.
We had to notch one rocker arm on each side to clear the Granatelli Motorsports sheetmetal

The added effort was worth it, the valve covers look killer.
We used a GM Performance Parts harmonic balancer for an internally balanced 454. Note the timing marks.
We used a GM Performance Parts harmonic balancer for an internally balanced 454. Note the
A Weiand ball bearing high-volume polished aluminum water pump should tackle the rat's cooling demands with ease.
A Weiand ball bearing high-volume polished aluminum water pump should tackle the rat's co

The Weiand 250 MegaBlower provides the cool looks of a Roots-style supercharger with the high efficiency of Teflon-tipped rotors and a compact design. Multiple upper pulleys are provided for several boost levels. The smaller the pulley, the higher the boost.
The Weiand 250 MegaBlower provides the cool looks of a Roots-style supercharger with the h
Holley 0-80573S 750 double pumper is a supercharger-specific carburetor. The power valves reference intake manifold vacuum below the supercharger,allowing the power valve to operate correctly. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Without this external referencing, the power valve would be "reading" the supercharger boost pressure, which has no bearing on the engine load.
Holley 0-80573S 750 double pumper is a supercharger-specific carburetor. The power valves
The lower blower pulley attaches to the harmonic balancer with three grade-five bolts.