318 are great motors i have had a few. The one i have now in a 1976 Dodge D100 5.2L or 318 has been a awesome motor. I have done maintenance, like a oil pump, all new gaskets, and a timing chain twice. It does have 480,000 miles same block same heads runs great and does not smoke at all. I do change oil every 3 thousand miles. I'm getting ready to put a 340 cam and 340-360 edelbrock heads and a better timing chain and also a 4 barrel carb. Going radical 318 like i had in my 73 Duster.
The 318 is a very tough motor, I remember back in the day, u CLD hold those on the floor, at higher rpm, valves start to float,. But never ever had a issue, with a 318.. as far as blowing up, while running the shit out of it... Never a problem.. great motor.. not much power but a reliable engine
@@bergerone3 you can make 800 out of these to my knowledge (I know more of the magnums than I do the las but most of it carries over so correct me if I'm wrong) but you'll either need to half fill or completely fill the block. And then there's literally no using it. No driving it. Just straight 1/4 mile that's it. Even with meth injection you won't run cool enough. It also takes a good amount of boost. Now if you could get an r3 block with some w9 heads, that's a dangerous recipe to hurt some hemi guys feelings....and I am a hemi guy
Mattew green. My 85 lights up quick with a small cam in it. But due to the low comp of the 318 engine depending on what cc head you get off of the 360 you might drop the compression ratio below 8:1 which is a huge problem its self. My truck got just about 8mpg being nice to it on a 200 mile trip. Its not cheap.
I agree, it was established when I built it so I shaved .040 off the heads to compensate for the lack of compression. I read about the head swap in a magazine when I was a kid and wanted to give it a shot lol.
@@sickmansgas483 I’m not sure what you mean by the same, but LA 318 and 360 are compatible. There are a lot of other factors though, closed chamber heads, the compression drop that occurs, etc. Forums are the best place to look up info on doing this.
@@half-asscyclesandrods6855 thanks I heard something about the heads being interchangeable in specific years I was just asking if you knew. Thanks for the info though!
@@sickmansgas483 I see what you mean, I can’t remember the years but it’s noticeable when you see one. First was the poly, then the LA, then the magnum. Hope you have a great easter
318 bore is too small to take full advantage of the heads. The bore is so small in fact, that the valves are shrouded by the bore walls, inhibiting flow. Good heads are better utilised on a 340 or 360. The 318 is a workhorse, not a thoroughbred.
Which one is better, they are the same. Proper aif fuel ratio is the best you can have. Closed loop FI has advantage for fuel economy through changing air densities. An example of changing air densities is driving from sea level over a high mountain pass in a macro example. In a much more micro view driving through a "low pressure" storm system.
Port fuel injection will almost always have an edge, being that the basic concept in similar to something like a stack injection. It might not always be much, but the benefits of port fuel injection will usually produce better power. This is coming from a guy who has swapped several fuel injected vehicles to carburetors. I still prefer carbs, but the facts don’t lie.
Dont you would go from 9.1 compretion to 8.5 because of bigger chambers also get a cam if your wanting to hop it up a little the tbi works amazing because it give it as much fuel as it needs.....it is really limitless but constricts air a little so what i did to mine is mill the runners and heads and got a large cam bud let me tell you the cam will wake up a little 318 there not called clark kent for nothing
This is BS.. the 360 heads will fit. But the valves are going to hit the deck before going into the cylinder.. I've tried it and on my Mopar Magnum 318 the 360 heads valves hit the top of the deck before they would open.. so you either got fucked on some heads or something not right. It just will not work. Do the research
Iv got a 75 powerwagon that i put 360 intake on, 340 camshaft, longtube race headers, 650 4 barrel carb, and ported the heads. It sounds mean af!!! Everyone always asks me if it's a 440 big block lol. Worked 318's can be nasty little enginnes!
318 is a very tuff motor. I have a 318 with 480,000 miles. But i have done a timing chain, all the gaskets, oil pump. I'm getting ready to put a 340 or 360 cam 360 heads and a better timing chain in the 318 .
