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jeremy
Dodge Dakota
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3/16/2005
07:57:13
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 Subject: 360 in place of 318
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hi i gotta 94 dodge dakota and i wanna get rid of the 318 and putta 360 in place of it but with a carb no fuel injection or anything what all should i need to get the job done???
any help would be awsome
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gen1dak
Dodge Dakota
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3/16/2005
12:17:16
| RE: 360 in place of 318
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Carb, intake, fuel pressure regulator, inline fuel pump (the Magnum setup makes way too much pressure, so it's an external pump, or plumb in a fuel return line-the pump is easier). Use the Mopar Performance electronic ignition kit. It details how to bypass the ASD to keep your systems running (if this isn't done, you AC, alternator, etc will not function), and provides a great, time-tested ignition system. Also, you'll need the matching torque converter or flywheel for the 360. The 318 converter can have weight added cheaply, but a 318 flywheel rebalance would be more costly...but not sure how much. Anyway, those are the high points. Remember that if it's a 360 Magnum block, it'll bolt right in, but if it's a 360 LA block, it only has the front mount ears and will require a crossmember to mount to. Magnums have the old-style "ears, but also the low/center mounting "triad" points, so keep this in mind.
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jeremy
Dodge Dakota
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3/17/2005
07:46:25
| RE: 360 in place of 318
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yeah that doenst seem to bad how bout it i kept the 318 and the computer and all that what would i have to do to get about 300 325 horse outta it??
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gen1dak
Dodge Dakota
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3/17/2005
21:50:59
| RE: 360 in place of 318
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I'm taking it that you mean keeping the 318 Magnum, but with a carb? A cam with specs like the CompCams XE256H or XE262H, matching springs, HD pushrods, Edelbrock Performer RPM Air-Gap intake for Magnum, and any 750-800 cfm carb. Also the MP electronic ignition. Note, these are for a carb, not MPI. Also, I'm talking 325HP at the crank, not the rear wheels. Put into perspective, the 318 will crank out 400HP at 6,000 rpm with the above pieces, and the CompCams XE268 cam. Remember, the Magnum cam will have different specs than an LA cam due to different rocker ratios. I refer to these cams to illustrate the duration @ .050 numbers and gross valve lift.
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jeremy
Dodge Dakota
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3/18/2005
11:20:29
| RE: 360 in place of 318
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i was actually thinking about keeping the computer and MPI. so i can run everything like it is now or do you think i should loose the fuel injection and go with a carb? its a 94
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pitadak
Dodge Dakota
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3/18/2005
12:32:02
| RE: 360 in place of 318
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IMHO carburetors suck
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gen1dak
Dodge Dakota
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3/18/2005
18:35:38
| RE: 360 in place of 318
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Okay, I'd just go with the Mopar Magnum RT cam (note, this is not the cam in the Dakota RT's). Part # is P5249549. Go with a low restriction air cleaner, headers and dual exhaust. This cam is emissions exempt through 2001 applications. To take better advantage of the power curve of this cam, an M1 intake is a definite plus. You should be right at 300HP at the crank with the stock intake manifold, even better with the M1.
Carbs don't suck. It's a common myth. You see, pitadak, it's actually positive atmospheric pressure that "blows" air into the engine, be it via throttle body or carb. :-P
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Phil
Dodge Dakota
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3/21/2005
00:28:30
| RE: 360 in place of 318
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I have a similar question about my 96 Dakota. currently I have the 3.9L in it and I just bought a 360LA block and I am wanting to get R/T heads for it and the MoPar performance MPI manifold. And I am wanting to put it in the truck. I was told by a tech at a Dodge dealership that the motor will bolt right up to my tranny but what I am concered about before I build the motor up, I have to biuld it so it can go throught emissons, but can I use the wiring harness and the PCM that is on the motor now? Or do I have to get all new harness and PCM? If someone can help answer for me that would be awsome!!!!!!!
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jeremy
Dodge Dakota
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3/21/2005
07:53:40
| RE: 360 in place of 318
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ok the headers and dual exhaust could i run true duals without the cat converters or would that effect engine performance at all? or do i just use the y pipe? also should i run my stock throttle body if i get the M1 intake? also what pistons should i run? my final question will i have to take my truck somewhere to have the computer reconfigured if im putting these different parts in?
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gen1dak
Dodge Dakota
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3/21/2005
17:41:39
| RE: 360 in place of 318
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Jeremy:
Non-supercharged applications for the street do fine with cast-aluminum (stock) pistons. On the exhaust, if emissions are involved, stick with the stock configuration, meaning y-pipe to single exhaust, but a full exhaust of mandrel bent tubing will improve flow. If you don't have to pass a visual emissions test, duals (2.5 inchers) would make a great sound. Alternatively, duals to a single 3-inch y-pipe and 3-inch single muffler and pipe would tend to be a bit cheaper, will flow every bit as much as dual 2.5's, and would save weight, plus would work in the stock configuration. It's up to you. On computer mods, it'd be easier to use a 360 computer from a Ram full-size pickup. Probably cheaper too. Just plug it in. If you use the 318 computer, it'd definitely need a rework to properly feed a cammed 360.
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gen1dak
Dodge Dakota
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3/21/2005
18:02:06
| RE: 360 in place of 318
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Phil: Your LA block will need a little custom work to bolt to the '96 frame. Either a bolt-in crossmember, home-fabbed mounts, or elephant ears. The LA blocks have the forward mounting "ears", but Magnums (while retaining the forward ears for older cars/trucks), use a mounting point "triad" in the lower middle area of the block. Dakotas use this, and have no provisions to mount otherwise. See
http://www.engine-swaps.com/ for the kit.
You will need a V8 computer. You can use the V6 engine harness, but you will need to wire in 2 additional wires for the two extra injectors. Otherwise, get a V8 harness. The other parts of the harness will work.
I'm taking it that you do know you will need to make provisions for oiling through the pushrods to lube the Magnum rocker setup?
Also, which tranny do you have? If a stick (probably won't live long behind a 360), you'll need the flywheel for a Magnum 360, but rebalanced for the LA 360...they're different weights. If an automatic, you will need a V8 Magnum flexplate with the torque converter rebalanced for an LA 360. You can have the weight added to the stock V6 converter. The reason for the Magnum parts is due to the crank trigger ring built into them, and this is necessary for the engine to fire the ignition and injectors.
Oh Jeremy, you can use the stock throttle body. As you reach for more performance, you can add a higher flow throttle body later on if you feel the need.
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jeremy
Dodge Dakota
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3/22/2005
07:47:26
| RE: 360 in place of 318
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so i can run duals from the headers and just cut the cat out if i want? a coupe people said i couldnt but i wouldnt see why not. also i was thinking about a aftermarket pcm just for the 318 or should i go with the 360 computer?
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Phil
Dodge Dakota
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3/22/2005
15:52:42
| RE: 360 in place of 318
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Thanks, could I use motor plates to mount it? I have an automatic tranny in truck but could I get an after market converter for the block that will match the RPM range of the cam? Or would it be better to rebalance the one in the truck? And yes I did figure that I will have to make the provisions for the oiling of the rocker arms, but I am not quite sure how!
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gen1dak
Dodge Dakota
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3/22/2005
18:44:40
| RE: 360 in place of 318
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Yeah, motor plates will work, just wanted to make sure you knew you'd need something like that.
See: http://store.yahoo.com/chucker54/mopper9.html
for what you need for oiling. The tappet decision depends on the LA block. Flats or rollers? My '89 318 had the roller tappets, and despite traditional oiling through the heads, it also had OEM roller rockers with the oil hole in the lifter pushrod cup, and hollow pushrods for oiling, so if a roller, the OEM's should fill the bill. Over 90% of the replacement flat tappets are made with oiling holes in the lifter so as long as the hole is there they'll work, or order the Jeep units. You must have the hollow pushrods. The ones listed in the link are for flat tappets, but, again, the roller pre-Magnums also had hollow units. Not too hard to find what you need. You can use OEM Magnum rockers on the heads.
These guys have lotsa tranny goodies:
http://www.transmissioncenter.net/dodge.htm
I'd go with an aftermarket converter. You can get a B&M balancer plate for 360LA that bolts in with the flexplate and it's a done deal. (There's only one way to bolt it in so you can't mess it up). Get a TransGo kit installed on that tranny, as well as a real external cooler if you want it to live.
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gen1dak
Dodge Dakota
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3/22/2005
18:50:02
| RE: 360 in place of 318
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Jeremy, the cat is just there for emissions purposes. No tailpipe sniff test? You can ditch it. Now, you will need to have an O2 sensor somewhere so the PCM will function properly. To avoid the need for premium gas, I'd pop a stock 360 PCM in. That way you get fatter fuel curves as the engine may require without the more aggressive ignition timing...unless you want that. If so, go aftermarket.
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brad
Dodge Dakota
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4/10/2009
19:57:56
| RE: 360 in place of 318
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i have a 94 dakota 318 dose the performance chip change the rev limitter?
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gen1dak
Dodge Dakota
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4/10/2009
21:45:31
| RE: 360 in place of 318
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The Mopar Performance PCM raises the limiter, I suppose the others do too.
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well
Dodge Dakota
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4/11/2009
23:21:36
| RE: 360 in place of 318
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other then that a custom flash
you can have the speed an rev limits raised
some places will even completely remove them
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