Our assembled Mopar Performance...
Our assembled Mopar Performance heads feature Comp Cams springs, retainers, and cups, as well as parts from Stage V.
The heads are PN P4529336 bare-aluminum heads from Mopar Performance. Bare heads were used because Richard presses out and replaces the valveguides so he can achieve the correct stem clearance with the chosen Ferrea or Manley valves. The heads also receive a complete valve job with bowl blending and stage-one porting. Then there are the Comp Cams titanium retainers, Viton seals, and head machining for the use of spring cups, which Richard likes better than shims. With this combination, installed height modifications and special street roller valvesprings are used. Stage-V polished-stainless-steel roller rockers that the top fuelers use are employed. For street use, Richard makes sure they have the extra oiling provisions for the pushrod cup. Rocker supports are from Mopar, and the pushrods are custom length, with hardened thick-walls from Smith Brothers. The oiling system is all Milodon, with a high-volume pump and the special windage tray for stroker motors.
The modified intake is an...
The modified intake is an Indy Cylinder Heads piece to which Richard added abreather and an oil filler-tube.
The Intake manifold is from Indy Cylinder Heads, but Richard also makes his own. He welded the oil filler and the Mopar logo breather onto the Valley plate so that the Stage-V polished valve covers would stay clean looking. The sequential EFI system and electronic distributor are from F.A.S.T., and Richard likes to use the MSD 1,000-cfm throttle body. The injectors are 48-lb/hr ACCEL units, and the spark plugs are Champion RN12YC with extension modifications. Resistor plugs must be used in this configuration.
So, what Mopar Engines West has done is to fill an old-style Hemi with accessories to bring it into the 21st century. How hard was it to dial-in, and how did it fair on the dyno? You'll have to tune in next month for the results.
The spark plugs are over-the-counter...
The spark plugs are over-the-counter Champions, RN 12YC. The extension on the top of the plug is needed to connect with the coil.
The coils can be purchased...
The coils can be purchased from your local Lexus dealer and come from an '03 RX 330. With the extensions on the spark plugs, a watertight seal is achieved.
To mount the plugs to the...
To mount the plugs to the valve covers, a small stud was fabricated and attached to the valve covers.
An MSD 1,000-cfm throttle...
An MSD 1,000-cfm throttle body and ACCEL 48-lb/hr injectors ensure the fuel will sufficiently feed the Hemi.
The completed monster. We...
The completed monster. We will agree that something doesn't look right with the distributor missing, and we bet you want to know how this thing runs. As you can imagine, trying to show how to tune a distributorless and fuel-injected Hemi will be a story in itself. So, tune in next month for the final numbers.