Re: 360 pros n cons
[Re: RAY1969CARS]
#2771020
05/04/20 10:00 AM
05/04/20 10:00 AM
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Joined: Jan 2003
Posts: 11,894 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 11,894
Benton, IL.
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What are your goals? If performance is important, then the Magnum heads are the way to go. And you can do that with either block style.
Master, again and still
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Re: 360 pros n cons
[Re: RAY1969CARS]
#2771097
05/04/20 01:42 PM
05/04/20 01:42 PM
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Joined: Jan 2003
Posts: 20,356 Eagle, Idaho
Neil
The Doctor is in.
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The Doctor is in.
Joined: Jan 2003
Posts: 20,356
Eagle, Idaho
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Magnum heads can crack between the valve seats.
Last edited by Neil; 05/04/20 01:42 PM.
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Re: 360 pros n cons
[Re: dvw]
#2771278
05/04/20 11:58 PM
05/04/20 11:58 PM
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Joined: Jan 2003
Posts: 3,122 Auburn WA
Dave_J
master
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master
Joined: Jan 2003
Posts: 3,122
Auburn WA
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The Magnumn 5.9 has a lot of plus's over the old Commando style 360. Even a base 5.2 will put out about the same usable power than a stock 360. The oiling ports on a mag are larger so the oil pump does not have to work as hard saving power. The heads flat out outflow Commando heads. Even some mild ported Commando heads will not flow as much as stock Mag heads. The Mag head have a much better quench shelf so you get higher compression with the closed chamber but the quench helps with the 'PING' too. Even if you use the same Cam spec's, a roller will have less friction to save HP
The mix of parts are so easy too to Hybred some combos.
Retired, US ARMY 1973-1994 ASE mechanic, Electrical 1994-1997 Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter 65 Formula S Cuda 78 Little Red Express Truck 98 Buick Regal (wifes car)
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Re: 360 pros n cons
[Re: Dave_J]
#2771436
05/05/20 01:39 PM
05/05/20 01:39 PM
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Joined: Jan 2011
Posts: 15,713 Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 15,713
Central Florida
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I owned two MP Magnum 360/300hp crate engines and put lots of miles on them. Never a problem with cracking heads. Only issues was some leaks in gaskets, probably poor assembly.
Flat out the best engine for the money I ever had. The 300hp/375tq seemed very underrated. It was a tire shredding torque monster but smooth idling and quite a sleeper. Someday I'd like to assemble the parts and build one again since MP does not produce them anymore.
Facts are stubborn things.
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Re: 360 pros n cons
[Re: RAY1969CARS]
#2771530
05/05/20 05:53 PM
05/05/20 05:53 PM
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Joined: Jan 2003
Posts: 3,122 Auburn WA
Dave_J
master
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master
Joined: Jan 2003
Posts: 3,122
Auburn WA
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Do they share the same oil pan ? Yes. But the Mag 5.2 and 5.9 have a dinky 4 quart pan. But they both use the 360's small rear main hump. For a center sump use a 360 car pan. You can also use the timing chain cover for the mechanical fuel pump if you get a long snout roller cam or a Hughes Engines adapter for the eccentric.
Last edited by Dave_J; 05/05/20 05:56 PM.
Retired, US ARMY 1973-1994 ASE mechanic, Electrical 1994-1997 Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter 65 Formula S Cuda 78 Little Red Express Truck 98 Buick Regal (wifes car)
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Re: 360 pros n cons
[Re: Dave_J]
#2771715
05/06/20 08:17 AM
05/06/20 08:17 AM
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Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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I wanted to keep the classic look but use fuel injection. I reused the timing cover but not the fuel pump. I used a 360 oil pan and oil pump. On top, I used CH318B cylinder heads that are Magnum based but have LA intake bolt angles. They are new castings that so far do not seem to have the Magnum cracking issue.The intake is an Edelbrock 4 BBL with a Holly Terminator TBI. If they were out then, I would have used a FI Tech. Spectra in tank fuel pump pushes the gas, This all started with a 5.2L out of a Dodge van that I paid 500 for. Just the roller cam itself made it a no brainer. Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
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