Looking for Quick and easy prooven bolt on performance for a 67 318

[68corazonetR/T]

I will be taking this engine out this spring when the car goes in for paint.
I don't want to throw too much into this small block but I figure it could use a little tweaking.

It has about 103500 miles on it. Being a 67 it should have a forged crank and a compression ratio of 9.2:1
With a 2 barrel when new it would of had 230 at 4400 rpm. So not so bad to start with, I figure with a little help 300 hp might possible.

Anyone have any suggestions? Like a good size and make of four barrel, intake that work well with a set of headers?
I do have a 1970  2bl 360 but it's  completely apart and figure I might built it up in the future. Using these 360 heads will lower
the compression and I don't think they will do much for the engine, I don't think the valves are much different anyway.

A forged crank is stronger but is also heavier right ? So unless you make a lot of horse power where you need that strength
does the forged crank have any other advantages
Does this extra weight work against the horsepower and torque?

[dodge freak]

The forged crank flexes less when stress, just cause a cast crank doesn't break, doesn notmean its wearing out the main bearings quicker.  Does the engine really need it, maybe not but since you have it, use it.

Those 360 heads will let the engine breath better, I found they make more hp at both the high and LOW rpms'. As for compression, aren't you going to replace those 44 year old pistons, I sure would. KB makes high compression 318 pistons now, you just mill the dome to get the compression you need. Think they are around 11 to 1 untouch but it depends on the head cc's.  

So I would rebuild the short bock using KB pistons and since you have those 360 heads, get those rebuilt and use them. With a mild cam 300 hp should be easy. You could just use a new factory replacement 340 cam.

You have a nice 10 to 1 compression engine that is just 17 CI smaller than a stock 340. You might want to use those 360 rods, 318's are weaker. Or buy new from China and use floating piston pins 

[Troy]

Um, "bolt-on" pretty much rules out a rebuild right? The 318 should have a forged crank. Are you sure it's a "1970 360" or a "360 from the 1970s"? I don't think 300 hp is out of line for a 318. There's another thread with nearly the same questions/answers right under this one (maybe over since people are answering both).

As usual, the bolt-ons with the best "bang for the buck" are going to be headers, intake, and carb. Possibly a good, strong ignition system (generally electronic). I don't consider cams to be "bolt-on" but the modern grinds can do wonders. Those are the biggies when it comes to power adders without tearing into the engine. With the engine apart you can play with heads, pistons, and compression.

You might as well build the 360 the way you want strictly because it has more cubes and parts are cheaper/easier to get. Swap it all out at once when you're ready. The intake, carb, and headers will work on both engines so you could do some modifications right away if you still wanted to drive it.

Troy

[68corazonetR/T]

Yeah that's what I'm thinking right now is to stay away from tearing apart the engine and building the 360 later on. The 360 has the date stamped on it 4.27.70 right over a clock pointing at 1 o'clock.

So for the 318 if I stick with what I have inside and on top, but not ruling out a cam and lifters, what would be a good intake for it? Would A 340 intake be too big, The 360 intake is a 2barell but I'm sure the ports must be larger than the 318. I want the ports to line up and have good flow so I'm thinking an intake built for the 318 like an OEM 318 4bl. or an Edlebrock Performer, Torker ? I don't plan on porting and I don't want to bottle neck it.

What would be a good size of carb without going too big or small. Headers? What's a good brand that will fit the car nice, what size of pipes? Some say the bigger the better but I'm not sure about that if you don't have the flow into the engine. The Factory 340 cam sounds like an good idea too as long as the lift isn't too extreme for the 318 heads. I don't know what's good out there..... so who makes a good cam?

The 360 heads I thought might be ok considering the compression in this engine is a little higher and I'm guessing that's because the pistons must be a little higher.
They do need work so at this point I don't think I will go that way.
Who makes a good ignition? Maybe even some later oem system will work better than the points.

The engine as it is runs smooth a responds well so that's a good sign everything is working as it should, the only real problem I see is a noisy lifter but it doesn't run too often and it does go away once it's warmed up.

[jmagga 73]

just go with summit racing headers $119.99 descent on price and sound (good as ive heard). intake id go with an edelbrock performance,carb a holley remanufactured 2 barrel.

go to summitracing.com and youll find something that suits you

[Rolling_Thunder]

Edelbrock makes a 318/340 intake...  will do you fine...   pretty much any 4bbl intake would work...      Get some street friendly 600cfm carb and enjoy it...       

Headers -  you have plenty of room for them so may as well get some - The summit brand aren't bad - no reason to spend huge $$$ on TTI or something.

Cams - if you decide to do one be realistic with your goals ---  Engle makes awesome grinds - my favorite cam company out there....   


I used to have a bone stock 318 in my Charger and loved it...    ran forever, no problems, no issues at all....      almost miss it actually -  but when i get the hemi running it should run the same but with 195+ more HP than my old 318    haha         

[68corazonetR/T]

This a new Hemi or Old one?
Thunder you told me once you had an 4 speed overdrive behind a 318. Now I know it's going to be a dog but with the family in the car I will be putting some serious milage on it for a while. What kind of rear end did you have in that car.... think mine is a 323.

Passing will require down shifting to 3rd  (1to1)   How did this work for you? I need to keep all this in mind  when buying a cam, I will check out Engle, I'm sure they must give you specs and performance ratings , applications, on what to expect from the cam you are buying for whatever purposes.