[FOR SALE] Parting out fresh 360

-
Status
Not open for further replies.

mbaird

mbaird
Joined
Dec 10, 2005
Messages
9,339
Reaction score
6,548
Location
boise, Id
Rating - 100%
10   0   0
Contact seller
I have decided to build a Magnum 5.9 roller motor with IMM EQs so I am parting out my 360... it has around 500 miles ....
.030 kb107s with polished stock rods and balanced to a stock 360 crank. New balancer...
500.00

J heads pocket ported with 2.02/1.60 stainless valves , Hughes springs and retainers , clearanced for upto .600 lift.
400.00

1976 360 block Bored .030 with TQ plates / align bored and decked..... new cam bearings/freeze plugs etc of course
400.00

Lunati Voodoo 702 cam and lifters... 125.00

I will seperate or combine or sell complete if desired...

I have found it hard to sell complete engines in the past so this seems to be the solution.

The engine is running and in my 68 Fastback currently.
I will post a video of it running before pulling sold intake and rockers tomorrow.
 
360 motor.jpg
 
I thought about that but I think it would have put my compression too high with 62cc
Magnums.
 
You probably worked this out already, but My KB 107s came in at .011 below deck on my LA 360. That's 2.3cc. Adding 5+8.8+62 that is a total of 78.1cc. At 4.03 bore, that makes a swept of 748.3------- and so (748.3 +78.1)/78.1=10.58 scr.
A cam with an ICA of 68* makes 165psi@137VP, pretty well on the edge for iron heads and pump gas at sealevel.
At 900ft and 70*, you are down at 157psi@128VP.
The Q would be .039+.011=.050 with closed chamber heads,a little loose but still doable.
An ICA of 68/70 Could be found on
a 280/286/108 cam,or a 276/284/110 or a 272/278/112, or a 270/274/114
Or many other similarly sized cams.
Of course these are all fairly large for the street and won't be particularly good on gas,lol. Well hang on the 114LSA wouldn't be that bad

But if you are looking to build something smaller, then yes 10.6 would be too much,for iron heads.

Now with aluminum heads, and still at 10.6Scr ....... you could run a cam down to about 58* ICA, and make monster torque, ferocious VP, and stupid-good fuel economy.
That could be a 252/260/114 cam with only 28* of overlap, it could make 182psi@164VP; that is low rpm performance like a 440Magnum. But the 252 cam is done pretty early, I'm guessing it might powerpeak around 4800, and with an auto would want to be shifted around 5600 on the 1-2.
Or it could be a 260/268/110 with same 58* ICA, now this cam will powerpeak at maybe 5100 and want the 1-2 shift pretty close to 6000. Bottomend will be same as 252 cam, but 44* overlap it will pull pretty good. I like it.

Of course 164VP is stupid lots of tire-shredding torque so we could give some of that up , and give up some fuel econmy, and maybe choose a middle of the road cam with an ICA of say 64*, and still at 10.6Scr I get, wait for it
268/276/110, and psi of 172 and VP of 148; now yer talking; enough torque to have fun with, an extended rpm powerband and still reasonable fuel economy. I like this one too. Aluminums are awesome.
As a matter of fact, I would run those closed chamber aluminums with an .028 gasket or down to .034Q, and that would punch things back up. With an Scr of 10.9 now that 268 cam could make 178@153VP whooeee.
Hey wait, I ran that....... on 87E10 with full timing.
 
Last edited:
Thats exactly what I came up with !

Well....minus the math. Lol
That is awesome!
Guess what, I looked up your altitude, and it looks like 2500ft; and you know what that means; more cylinder pressure is permissible!
Now you can run that 10.9Scr with closed chamber IRON heads for a pressure of 165psi and VP of 141@an ICA of 64*
That is very good number to come in at, because of the .039Q!
It could be a small torquey cam..... or a powerhouse. Guess what,that could be a
262/268/114, with overlap of 36*... for fuel economy.
268/276/112, with overlap of 48*. The 112LSA is good for an automatic.Here's another;
270/276/110, with overlap of 53*.... still with an ICA of 64. Or,
272/278/108, with overlap of 56*.... for a stick car. Or
276/284/108, with overlap of 64*.... if you just want a screamer. Or
I could go on, but we are leaving the realm of streetability
That 276 cam with fast-rate ramps could be 232@.050 which is a powerhouse street cam, at 165psi.
But one caution; the pressure,165psi, is right on the edge of detonation for IRON heads, and will require premium gas when she's working hard. I think that with .039Q, it will work. If not, just retard the cam 2*, or install the .039gasket for .011 more Q, now .050; and call it done. This is with iron heads.
How did I get 10.9Scr?
62heads+2.3deck(.011)+5eyebrows+6.3gasket, totals the all-important total chamber volume of 75.6cc. The swept @.030 oversize is 748.3, soooo
(748.3 + 75.6)/75.6=10.902 ..... now working with IRON heads at 2500ft altitude.
 
Last edited:
Status
Not open for further replies.
-
Back
Top