5.9 Magnum Question

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mopardug

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I have another stupid question lol. Sometime in the past I was told that either '99 or 2000 5.9's were different from the earlier years. Something about the crank snout or maybe the balancer was different and earlier (common) parts wouldn't work. The person also told me that those newer 5.9's weren't worth having. The engine in question was out of a '00 1ton van. Is this another case of a mental midget? Or is there something to this? P.S. I went back an even 13 pages and didn't notice a topic like this. Thanks for looking.
 
Yes, mental midget-ism.

Some do not like the pedestal mount rockers and cringe that a Chevy rocker can be used. The port flow on the Magnum head is an argumentative point on "Is it better than an LA head?"

Earlier Magnum engines?

I guess it all depends on what you want to do, what cost is involved for your wallet and what your willing to live with.

There are pro's and con's to each engine family. A, LA, Magnum. I'm making use of a '00 , 5.9 in my '79 B body. With the serpentine belt. No fuel pump eccentric so I used a Edelbrock electric carb pump. A B&M flexplate to mate it up with a neutral converter & 727, RPM-AG, AVS Thunder 650 & Super Comps. No cam yet. 3.55's out back.

Works great for me!
 
Yes, mental midget-ism.

Some do not like the pedestal mount rockers and cringe that a Chevy rocker can be used. The port flow on the Magnum head is an argumentative point on "Is it better than an LA head?"

Earlier Magnum engines?

I guess it all depends on what you want to do, what cost is involved for your wallet and what your willing to live with.

There are pro's and con's to each engine family. A, LA, Magnum. I'm making use of a '00 , 5.9 in my '79 B body. With the serpentine belt. No fuel pump eccentric so I used a Edelbrock electric carb pump. A B&M flexplate to mate it up with a neutral converter & 727, RPM-AG, AVS Thunder 650 & Super Comps. No cam yet. 3.55's out back.

Works great for me!
I was handed a 2000 Magnum,for free... even the service replacement heads,were toast,the roller cam,had three flat lobes...Ended up with EQ heads,the Crane cams,stud set up, and 1.5 Comp Cams Chev rockers...I like valvetrain adjustability,on my stuff...
 
I was handed a 2000 Magnum,for free... even the service replacement heads,were toast,the roller cam,had three flat lobes...Ended up with EQ heads,the Crane cams,stud set up, and 1.5 Comp Cams Chev rockers...I like valvetrain adjustability,on my stuff...
Tim , how does a roller lifter eat a cam, no oil ? High miles?
 
Did about the same as Abodybomber.
Mine had about 90k on it and cylinders and bearings, looked near new but the heads were cracked on all four corner cylinders right between the valves.
EQ heads, Hughes springs and retainers, stock magnum rocker gear on mine, custom regrind LA style roller cam with a Carter rotary vane pump and full circulating fuel system.
The Magnum has a great bottom end that lasts a long time, but the heads are the weak point in them.
The relatively inexpensive EQ Magnum heads solve that problem and flow well right out of the box. (about 230cfm)
 
I have another stupid question lol. Sometime in the past I was told that either '99 or 2000 5.9's were different from the earlier years. Something about the crank snout or maybe the balancer was different and earlier (common) parts wouldn't work. The person also told me that those newer 5.9's weren't worth having. The engine in question was out of a '00 1ton van. Is this another case of a mental midget? Or is there something to this? P.S. I went back an even 13 pages and didn't notice a topic like this. Thanks for looking.

I believe 99 or 2000, not sure when they made the switch, but the balancer and crank pulley are one piece on the newer ones and older ones have a crank pulley that bolts on to the balancer. Not a big deal if you are using the serpentine set up. If switching to LA front and pulleys just need an older style balancer. Other than the balancer not much changed.
 
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1-7/8 outlet, off of a 1999 Durango. IDK if they were stock for that vehicle. It had an engine swap.

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