Are 5.9L Magnum engines any good?

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Old Dec 16, 2014 | 02:33 PM
  #1  
74Runneer's Avatar
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From: Twin Cities, Minnesota
Are 5.9L Magnum engines any good?

My friend calls me up and said he blew the rear main seal in his 1993 dodge 5.9 and asked if I wanted it because he was just going to scrap the truck. I have a Road runner with a 318 in it right now and was wondering if this is something I should snag in case the 318 dies on me.

Can these magnums be built for pretty cheap? I bought headers, performer intake, 600 cfm eddy, and a fbo ignition system (ecm, coil, dizzy) for my 318. Will any of these be able to transfer to the magnum?

What do you guys think?
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Old Dec 16, 2014 | 02:52 PM
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Great snag for sure, all but intake manifold will work. Get the flywheel or flex plate/torque converter too.

Dan.
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Old Dec 16, 2014 | 07:07 PM
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Do most people keep the fuel injection or swap it out with a carb?
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Old Dec 17, 2014 | 12:45 PM
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Depending on swap, swap to carb. stand alone fuel injection systems are expensive
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Old Dec 17, 2014 | 02:01 PM
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If you keep it close to stock with OEM computer and full engine wiring harness, you can get a better running more reliable new engine in an older car, but that's not much fun.

If you computer search Magnum modifications/swaps you'll find mild to wild.
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Old Dec 19, 2014 | 12:01 PM
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IMHO i would swap out the stock smog cam. and use a new cam about the same lift and duration as the stock cam but aftermarket. with a good double roller chain. 2-4 degrees advanced. never never go more than 4 degrees. and put brass soft plugs in the block. and JB-weld to hold them in.
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