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[Ice Cold]

Oh yeah

If you go with a 360, you need a left 360 (5.9) motor mount bracket for the engine side.  318's are different


Ahhhh  throw a leaning tower of power in there. 

Ya, I can get 25mpg easy outta my /6-with big a$$ed tires.

[Dippy.org]

[Diplomatic Immunity]

Oh yeah

If you go with a 360, you need a left 360 (5.9) motor mount bracket for the engine side.  318's are different


Ahhhh  throw a leaning tower of power in there. 

Ya, I can get 25mph easy outta my /6-with big a$$ed tires.

I hope you mean "MPG"
Or KPL considering you live in one of those terrifying metric lands.

[Ice Cold]

Oh yeah

If you go with a 360, you need a left 360 (5.9) motor mount bracket for the engine side.  318's are different


Ahhhh  throw a leaning tower of power in there. 

Ya, I can get 25mph easy outta my /6-with big a$$ed tires.

I hope you mean "MPG"
Or KPL considering you live in one of those terrifying metric lands.

OK, typo fixed. MPG
Here in metric land it's how many liters per 100K

[270SE]

Oh yeah

If you go with a 360, you need a left 360 (5.9) motor mount bracket for the engine side.  318's are different


Ahhhh  throw a leaning tower of power in there. 

The 318 mount can be used on a 340/360 but not the other way around.

The leaning tower is not as easy to build for power. (costs more or takes more tricks)

I worked up my teen and the 360 for mountains and MPG. It seems to have worked well. I don't get over 25, but the teen did.

I'll have to read through that, there's a lot there. My mutt is running the stock flat tops without valve reliefs. It's at least in the high 8s in compression. I run 93 to try to avoid as much crud as possible in the tank.

[patrickgrossman]

a 273 is a step back no matter how you look at it....45 less cubes than a 318 is less power and torque potential.

small bores means more shrouding (heck, you can't run magnum heads on them without notching clearance on the bores)

your most cost effective swap is: find a good running 360 magnum out of a junkyard.  replace the intake with either an eddie RPM air gap, dual plane M1, or crosswind manifold.

use a 600 cfm edelbrock 1406

use summit headers

get some 2.2L/2.5L chrysler 4 cyl valve retainers and use hughes #1110 springs

send the cam to bullet cams, have them re-grind the roller cam using their HR259/316 lobe for both intake and exhaust.  get the hughes crank snout extender, and
swap the t-chain cover forward from your 318....

it'll be an honest 330-340 HP and 400-420 tq motor, and get pretty decent mileage.  if you have a 7.25" axle, replace it, it won't be long for the world.....


second most cost effective option: get magnum heads with those springs, use the same cam suggestion/carb/intake/headers, and put them on your shortblock (if yours is an -85-up roller motor, you'll need the magnum lifters/pushrods/rockers, but you can get your LA cam reground).  if it's a flat tappet motor, use the comp XE250 or XE256 cam.

I just reread this, and it hit me what was being said. If i find a mag. 360, put the  4bbl carb and intake, headers, and swap lean burn, maybe cam as well only, i'll be very close to 300 right?.. also, my mileage will be around what? Right now, im getting about 14 with mostly highway driving, and if i can get better than that, i'll consider it a win-win

I have the 8.25 rear, and the standard cop trans for an 86. Can i use the mag serpentine system, and just connect all of the ac/power junk to it, or do i need to swap everything over.

this is my combo on my original '86 318 short block.  I'm consistantly getting 17-18mpg with a 60/40 highway/city mix of driving.

[Ice Cold]

Back to Herb McCandless, he said some 331 Hemi valves in a /6 makes it a screamer. 
If I fall across a /6, I might just try that.

[Mike]

Lately what they've been selling as 360 engine mounts are 318 ones anyway so you'll probably end up using washers on it even if you get a new one.

[brotherGood]

@polaraco; i ran through that thread, its very educating for sure-especially for me and my lack of knowlege. Im not sure if you had seen my original goals, but they were the 300+hp with a healthy amount of torque, the mileage goal was originally 12, but ive upped it considering now im driving 35 minutes one way to work now (now 15/16 avg.) and a build that wont run up a bill. I personally dont want to get into head work because i have no way to do it myself, and everywhere i know of around here is crazy expensive. What we may do, is use the AHB motor if it doesnt go in something else first, as something to learn on. But i will have to bookmark that because it does seem as if i can learn a lot from that.

@patrickgrossman; if i dont mess with the valve retainers and springs, what will i be looking at do you think? Also, if i really dont need the cam to be messed with, i wont...so, will i need the cam redone?

[Polaraco]

270 SE

I have to disagree with you.  Well to a point. .  .   If you shim the 318 mount, it will mount on a 360. But it's possible to put undo stress on the ears and break them off.  Did that before.  The original engine I put in the Polaraco was 5.2 Magnum.  But it was a bit light for the car, so I built up that 5.9.  I used the original 360 mount because I was in a hurry.  It also throws the motor mount off center fo the frame mount.  But yeah it will work, but not something I would recommend.   

[Polaraco]

@polaraco; i ran through that thread, its very educating for sure-especially for me and my lack of knowlege. Im not sure if you had seen my original goals, but they were the 300+hp with a healthy amount of torque, the mileage goal was originally 12, but ive upped it considering now im driving 35 minutes one way to work now (now 15/16 avg.) and a build that wont run up a bill. I personally dont want to get into head work because i have no way to do it myself, and everywhere i know of around here is crazy expensive. What we may do, is use the AHB motor if it doesnt go in something else first, as something to learn on. But i will have to bookmark that because it does seem as if i can learn a lot from that.

@patrickgrossman; if i dont mess with the valve retainers and springs, what will i be looking at do you think? Also, if i really dont need the cam to be messed with, i wont...so, will i need the cam redone?

Yeah  Dana and I write that stuff so the more mechanically challenged undertsands it.  We're getting as bad as Eherenburg.  (He busts my butt all the time)

You don't have to do the heads, the gains are not that great, not like a good cam.  But the cam and fueling choice is key.  Reducing internal friction helps allot too.  When looking for MPG, focus on the torque.  Not the HP.

My next project is a 413 ported, cammed with an Edelbrock multiport EFI and a 518 trans. :

[270SE]

270 SE

I have to disagree with you.  Well to a point. .  .   If you shim the 318 mount, it will mount on a 360. But it's possible to put undo stress on the ears and break them off.  Did that before.  The original engine I put in the Polaraco was 5.2 Magnum.  But it was a bit light for the car, so I built up that 5.9.  I used the original 360 mount because I was in a hurry.  It also throws the motor mount off center fo the frame mount.  But yeah it will work, but not something I would recommend.   

When it breaks I'll buy a mount. They're 32 years old but some of the new stuff is even worse, and this car takes sick pleasure in breaking chinese parts.

And I'll agree with you on the torque. That's what makes a fun driver and gets MPG. You can have more fun with a torquey 245hp engine than a gutless-down-low 300hp engine.

[Polaraco]

I was talking about the block bracket.  Weren't you? 

[270SE]

I was talking about the block bracket.  Weren't you? 

Yep. That's exactly what I was talking about.

I actually have a 360 block bracket but I don't know if I can use it with the 318 frame mount.

[brotherGood]

Ok, so new to me...I may have found a good 360 mag for sale. Its actually at the shop where my car gets fixed. Dads gonna get everything on it tomorrow..like mileage, condition..etc. I've come to the conclusion on intake/carb/headers/mild cam/ignition..I need the 360 car pan, motor mount or spacers, and balance kit..anything else?

[Charger440RT]

Sounds like a good plan. I wish I could give you more help on the swap though. I'm not familiar with the 360 swap, I'd have to do it myself to understand what all the little details are everyone's telling you