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magnum head ? #164141 12/08/08 01:14 AM 12/08/08 01:14 AM
Joined: Sep 2007 Posts: 142 littlestown pa dustpan man OP member
dustpan man OP member Joined: Sep 2007 Posts: 142 littlestown pa	are the magnum heads off a 318 the same as the heads off a 360 i got a 75 360 i want to put them on and are the intake manifolds different

Re: magnum head ? [Re: dustpan man] #164142 12/08/08 01:39 AM 12/08/08 01:39 AM
Joined: Jan 2003 Posts: 8,089 Sorrento, BC, Canada 4speeds4me master
4speeds4me master Joined: Jan 2003 Posts: 8,089 Sorrento, BC, Canada	The 318 and 360 Magnum heads are the same. Bolting them onto a 75 360 isn't TOTALLY straightforward, though. The Mags oil the rockers through the pushrods and have individual rockers. There are conversion pieces readily available. The intakes are different, but Mag heads can be redrilled to accept LA intakes, or you can use a Magnum specific intake, I believe available from MP, Edelbrock, or the Professional Products "Crosswind". 2 Demons...no, not my kids!

Re: magnum head ? [Re: 4speeds4me] #164143 12/08/08 01:45 AM 12/08/08 01:45 AM
Joined: Sep 2007 Posts: 142 littlestown pa dustpan man OP member
dustpan man OP member Joined: Sep 2007 Posts: 142 littlestown pa	u think i can use the push rods from the magnum motor do u would u get them and use them

Re: magnum head ? [Re: dustpan man] #164144 12/08/08 02:17 AM 12/08/08 02:17 AM
Joined: Jan 2003 Posts: 104,346 Garden Grove, CA OzHemi Penguin-hating Ginger
OzHemi Penguin-hating Ginger Joined: Jan 2003 Posts: 104,346 Garden Grove, CA	The magnums use roller lifters as well, so the push rods will not be the correct length with a normal oil through the pushrod non roller lifter.

Re: magnum head ? [Re: OzHemi] #164145 12/08/08 02:24 AM 12/08/08 02:24 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	The MP pushrods for this conversion may end up being too short, mock everything up before you make a decision on ordering pushrods. live every 24 hour block of time like it's your last day on earth

Re: magnum head ? [Re: RapidRobert] #164146 12/08/08 02:31 PM 12/08/08 02:31 PM
Joined: Sep 2007 Posts: 142 littlestown pa dustpan man OP member
dustpan man OP member Joined: Sep 2007 Posts: 142 littlestown pa	how much would they go for there in a u pull junkyard i can get them perty cheap do u think i should pull them if i deside not to use them

Re: magnum head ? [Re: dustpan man] #164147 12/08/08 02:42 PM 12/08/08 02:42 PM
Joined: Jan 2003 Posts: 20,755 Eagle, Idaho Neil The Doctor is in.
Neil The Doctor is in. Joined: Jan 2003 Posts: 20,755 Eagle, Idaho	Make sure they aren't cracked. If you buy them from a junkyard make sure they will allow you to return them if they are damaged. I looked at a set on a 318 a few weeks ago and can't believe how small the intake ports are. The pushrod bump was huge and it didn't look like you could remove a whole lot of it before you'd break thru. My dad was looking for a set to put on a LA 360, but they don't look like they could flow a lot of air stock.

Re: magnum head ? [Re: Neil] #164148 12/08/08 04:52 PM 12/08/08 04:52 PM
Joined: Jan 2005 Posts: 4,450 Michigan MarkZ Worthy
MarkZ Worthy Joined: Jan 2005 Posts: 4,450 Michigan	Quote: My dad was looking for a set to put on a LA 360, but they don't look like they could flow a lot of air stock. They do, more than a stock J head could ever muster. I had a lengthy conversation with another board member here and he mentioned Mag heads off of a 318 being less prone to cracking than those off of 360s. Makes sense when you think about it. Maybe the 360s were ran leaner to pass emissions standards? I have a set off of a 100k+ 318 Mag and they came back crack free. 1987 Fifth Avenue - 512/518/D60

Re: magnum head ? [Re: MarkZ] #164149 12/08/08 04:56 PM 12/08/08 04:56 PM
Joined: Apr 2007 Posts: 2,826 NY usa 5 540challenger master
540challenger master 5 Joined: Apr 2007 Posts: 2,826 NY usa	Quote: Quote: My dad was looking for a set to put on a LA 360, but they don't look like they could flow a lot of air stock. They do, more than a stock J head could ever muster. I had a lengthy conversation with another board member here and he mentioned Mag heads off of a 318 being less prone to cracking than those off of 360s. Makes sense when you think about it. Maybe the 360s were ran leaner to pass emissions standards? I have a set off of a 100k+ 318 Mag and they came back crack free. I think the 318 heads were produced in a different foundry then the 360 head

Re: magnum head ? [Re: 540challenger] #164150 12/08/08 05:30 PM 12/08/08 05:30 PM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	you will need the oil through flat tappets and the hollow conversion pushrods from MP/dealer to run mag heads on a older LA engine block these 2 things are a must to run mag heads on a non-mag LA block the intake has options as mentioned above if your block is a pre-mag LA roller block then you can use the mag roller lifters and stock pushrods and mag heads

Re: magnum head ? [Re: scratchnfotraction] #164151 12/08/08 06:08 PM 12/08/08 06:08 PM
Joined: May 2003 Posts: 1,527 Michigan G GoDartGo pro stock
GoDartGo pro stock G Joined: May 2003 Posts: 1,527 Michigan	wadda'bout head bolts?

Re: magnum head ? [Re: GoDartGo] #164152 12/08/08 09:18 PM 12/08/08 09:18 PM
Joined: Apr 2007 Posts: 2,826 NY usa 5 540challenger master
540challenger master 5 Joined: Apr 2007 Posts: 2,826 NY usa	Head bolts are different also You can get them anywhere. Just ask for head bolts for any mangum engine and they will work or you can get them thru mopar, manicci, "spelled wroung" Like mention in the post above the tappets need to be for pusrods oiling but must after market lifters comes this way if you have an aftermarket came chances are you have them already just look for the oiling hole in the middle of the lifter.

Re: magnum head ? [Re: 540challenger] #164153 12/09/08 09:48 AM 12/09/08 09:48 AM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	yes,stock head bolts will work for the mag heads on an LA block

Re: magnum head ? [Re: RapidRobert] #164154 12/09/08 12:37 PM 12/09/08 12:37 PM
Joined: Apr 2004 Posts: 1,396 Mass dgc333 pro stock
dgc333 pro stock Joined: Apr 2004 Posts: 1,396 Mass	Quote: The MP pushrods for this conversion may end up being too short, mock everything up before you make a decision on ordering pushrods. The conversion push rods are 7.625" long. In my application I wound up odering 7.650" long push rods. This length was a stock length for some other application so they were off the shelf from Summit. Dave Clement Pembroke, MA 03 PT Cruiser GT Turbo 99 Dakota SLT+ CC 4x4 68 Barracuda sport coupe http://home.comcast.net/~dgc333/

Re: magnum head ? [Re: dgc333] #164155 12/10/08 12:49 AM 12/10/08 12:49 AM
Joined: Sep 2007 Posts: 142 littlestown pa dustpan man OP member
dustpan man OP member Joined: Sep 2007 Posts: 142 littlestown pa	are the valve covers the same

Re: magnum head ? [Re: dustpan man] #164156 12/10/08 08:45 AM 12/10/08 08:45 AM
Joined: Apr 2007 Posts: 2,826 NY usa 5 540challenger master
540challenger master 5 Joined: Apr 2007 Posts: 2,826 NY usa	Quote: are the valve covers the same No the magnum and La covers are different Magnum have ten bolt covers LA 5 bolt Plus the cover gasket is shaped a little different from magnum to la. However many guys have been able to install LA covers on Magnum heads with no leaks.

Re: magnum head ? [Re: dustpan man] #164157 12/10/08 09:16 AM 12/10/08 09:16 AM
Joined: Dec 2004 Posts: 1,061 New Mexico D dmerc super stock
dmerc super stock D Joined: Dec 2004 Posts: 1,061 New Mexico	Quote: are the valve covers the same Here is a pic of Magnum covers on my car. I think they look pretty good.

Re: magnum head ? [Re: dmerc] #164158 12/10/08 09:18 AM 12/10/08 09:18 AM
Joined: Apr 2004 Posts: 1,396 Mass dgc333 pro stock
dgc333 pro stock Joined: Apr 2004 Posts: 1,396 Mass	And here is a picture of LA covers on magnum heads. Thesse have been on there for approximately 25k miles now and no signs of a leak. Dave Clement Pembroke, MA 03 PT Cruiser GT Turbo 99 Dakota SLT+ CC 4x4 68 Barracuda sport coupe http://home.comcast.net/~dgc333/

Re: magnum head ? [Re: dgc333] #164159 12/10/08 11:14 AM 12/10/08 11:14 AM
Joined: Jan 2003 Posts: 10,502 Chicago, Illinois Devil I Live Here
Devil I Live Here Joined: Jan 2003 Posts: 10,502 Chicago, Illinois	I like these valve covers, I plan on putting these on my RamCharger when I get the chance. Got them for a really good deal too! But as was said before, LA style valve covers can fit. Ryan

Re: magnum head ? [Re: Devil] #164160 12/10/08 06:23 PM 12/10/08 06:23 PM
Joined: Jul 2003 Posts: 4,788 Holland MI Ottawa 2 2boltmain master
2boltmain master 2 Joined: Jul 2003 Posts: 4,788 Holland MI Ottawa	So for a magnum head conversion set up, what are the costs for the valvetrain items for a .500" lift hyd flat tappet cam? - lifters, pushrods, rocker arms and studs. Can regular run of the mill small blk chevy rocker arms be used? Been comparing an Engine Quest magnum head conversion to a set of ready to run Edelbrock LA heads. I think after the conversion is complete with the magnum type heads the cost would be comparable to staying with the LA setup but with new Ebrocks. Keep old mopars alive.

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