It's definately possible to swap a Cummins into a Ramcharger. To do it, you'll also need the tranny, as the Cummins bell housing pattern is different from SB & BB patterns. You will need the radiator for the Cummins and if possible, the radiator wall. If you can't get the rad wall, you'll need to modify your current rad wall so that the Cummins rad fits flush against the inside surface of the wall, because the engine is very long compared to a V8.
Everything else fits just right, the engine drops in with no other mods. As for wiring harnesses. The Cummins trucks have their own harnesses depending on the engine year. The newer 24V engines are computer controlled and require the harnesses. You don't nesarily need the harnesses for the older non-computerized engines, but much of your old harness will be useless for the diesel.
Other things you should consider when making this swap is that you should swap both axles. The Cummins has about twice the weight of your small block. While your Dana 44 front axle can physically support the weight, the weight will eventually hammer it to death. A Dana 60 front is seriously recommended when installing a Cummins, or at least build a beefy truss for your current Dana 44 and expect to replace ball joints more often.
You should upgrade the rear axle to a Dana 60, Dana 70 or GM 14 bolt. The Cummins produces alot of torque, and it's bad enough that 9.25s are known for big backlash. With a Cummins hammering the gears, the 9.25 will not last long.
You can see my swap here; www.rxt.ramchargercentral.net
Ed
Everything else fits just right, the engine drops in with no other mods. As for wiring harnesses. The Cummins trucks have their own harnesses depending on the engine year. The newer 24V engines are computer controlled and require the harnesses. You don't nesarily need the harnesses for the older non-computerized engines, but much of your old harness will be useless for the diesel.
Other things you should consider when making this swap is that you should swap both axles. The Cummins has about twice the weight of your small block. While your Dana 44 front axle can physically support the weight, the weight will eventually hammer it to death. A Dana 60 front is seriously recommended when installing a Cummins, or at least build a beefy truss for your current Dana 44 and expect to replace ball joints more often.
You should upgrade the rear axle to a Dana 60, Dana 70 or GM 14 bolt. The Cummins produces alot of torque, and it's bad enough that 9.25s are known for big backlash. With a Cummins hammering the gears, the 9.25 will not last long.
You can see my swap here; www.rxt.ramchargercentral.net
Ed
