The timing gearset used is...
The timing gearset used is from Pro Gear. The Pro Gear setup uses a double roller chain, and the crank sprocket was set up with nine keyways cut into it, making degreeing the cam very easy.
The heads used on this engine...
The heads used on this engine are the new Mopar Performance Parts Magnum R/T cast-iron units. Since this engine is being built for use with a supercharger, the combustion chamber underwent work to open it up. These heads use the 2.02-inch intake valves.
The intake ports have been...
The intake ports have been ground and polished to full street specs.
The reworked heads were fastened...
The reworked heads were fastened into the flow bench, and they were flowed to a street blower port spec at Thunderhead Racing, a company that does all of The Fastman's performance head work.
The new Cometic head gasket...
The new Cometic head gasket is a very strong metal unit made up of three layers. The outside two are made from embossed-spring steel that is coated with viton. The center layer is a steel piece that provides support for the gasket, allowing for multiple thicknesses.
Mopar valves and springs are...
Mopar valves and springs are items recommended for use with Magnum R/T heads. The springs used for this supercharged engine are Mopar's double-spring units. The heads are fitted with a Crane's Gold Series roller rocker arm conversion kit, which provides guide plates and studs. The pushrods are a little longer, due to the higher lift cam.
Mopar Performance Parts' Magnum...
Mopar Performance Parts' Magnum roller lifters were installed and the retainer units were bolted down. That setup is used only on Magnum engines.
These are Crane Gold Series...
These are Crane Gold Series roller rocker arms. They are 1.6 ratio, the stock Magnum ratio. Mopar 2.02-inch intake valves were used along with its 1.65-inch exhaust valves. The springs come with heavy-duty retainers, and the heads were machined and fly-cut to fit the springs.
This engine build is complete....
This engine build is complete. All that is left to do is to set this rocker-buster into place.
This is the Mopar Performance...
This is the Mopar Performance Parts aluminum M1 four-barrel intake manifold installed with a Mopar race-only four-barrel throttle body. It is a 1,000-cfm-rated unit. Scott found that with the Paxton supercharger he needed to change it over to an F&B two-barrel throttle body.
Here is the 52mm F&B two-barrel...
Here is the 52mm F&B two-barrel throttle body bolted up to the same M1 intake manifold. The F&B is a 1,050mm unit with 52x55mm oval-shaped barrels, and flows 50 more cfm. It is a two-barrel unit that uses all of the stock Dakota linkage and fittings, plus it is much easier to hook up and works great with the blower.
The engine has been in the...
The engine has been in the truck for about four months now, and the Magnum motor was run on Pacific Performance Engineering's chassis dyno and produced some good numbers. The 408 Magnum stroker engine recorded a 543.9 hp at 5,200 rpm. This motor puts out that amount of horses and 565 lb-ft of torque, according to Pacific's dyno charts. The truck is a fully outfitted, streetable machine that has run 11.80 times and will now be fitted with a rollcage for the strip. Thus far, this motor has proven that it does make some serious horsepower.
The engine has been in the truck for about four months now, and the Magnum motor was run on Pacific Performance Engineering's chassis dyno and produced some good numbers. The 408 Magnum stroker engine recorded a 543.9 hp at 5,200 rpm. This motor puts out that amount of horses and 565 lb-ft of torque, according to Pacific's dyno charts. The truck is a fully outfitted, streetable machine that has run 11.80 times and will now be fitted with a rollcage for the strip. Thus far, this motor has proven that it does make some serious horsepower.
Speed (RPM
| Torque (lbs./ft)
| Horsepower
|
3,500
| 477.58
| 319.40
|
3,600
| 487.46
| 334.08
|
3,700
| 493.24
| 347.07
|
3,800
| 507.23
| 366.25
|
3,900
| 524.08
| 388.84
|
4,000
| 532.98
| 406.13
|
4,100
| 540.50
| 422.58
|
4,200
| 544.46
| 435.29
|
4,300
| 550.57
| 450.66
|
4,400
| 553.91
| 463.59
|
4,500
| 557.38
| 477.75
|
4,600
| 560.73
| 491.44
|
4,700
| 561.23
| 502.12
|
4,800
| 565.02
| 516.48
|
4,900
| 561.40
| 523.87
|
5,000
| 557.71
| 531.11
|
5,100
| 556.86
| 540.84
|
5,200
| 554.25
| 543.90
|