5.9 mag into d250

[superbinder]

I want to swap a 2000 5.9 magnum into a 86 D250 4x4 with 4 speed. Want to keep factory efi, too. What flywheel would work? It has a 360 now.

 

[JDMopar]

I would think you will need one from a 2000 Dodge truck with a 5.9 Magnum. If you buy a new one, be sure to specify that you have a 5.9 gas engine, not a 5.9 diesel. The flywheel from your 360 won't work. It does not have the notches needed for the ignition, and the balance on an LA 360 is way different than a 5.9 Magnum.

 

[sireland67]

I used a mcleod flywheel that that takes a bolt on weight when I put the mag in my W150.

 

[superbinder]

I would need to use a clutch for a 2000 5.9 magnum and possibly the disc from the 1986 or are the trans splines the same?

 

[sireland67]

What is the clutch size on the 1986?
You will want to use one for the trans you are bolting the motor to.
Most likely it is a 143 tooth flywheel with a 11” 23 spline clutch.