Best 360 magnum cam specs oregon regrind

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junkyard kid

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Was going to get oregon to regrind a Hydraulic roller cam was wanting to see if anyone could maybe give some advice stock internals heads hand ported stainless shorties airgap intake 750 holley spread bore carb
 
Well, what's your intended use for the engine? Street, strip, Autocross, plowing the back forty?
Did you ask Oregon, or just look at their site? CALL them. They're very good at giving specific recommendations- they KNOW how their cams perform; after all, they designed them.
 
junkyard kid said:
Was going to get oregon to regrind a Hydraulic roller cam was wanting to see if anyone could maybe give some advice stock internals heads hand ported stainless shorties airgap intake 750 holley spread bore carb
Click to expand...
Hoping to get it to run strong race application
 
junkyard kid said:
I did they told me ship my cam and he'd give a call told him 480 ballpark
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You want 480hp?

I think it will be difficult for hand ported stock heads. Plus the amount of work/money to get them there isn't worth it IMHO., if they aren't cranked already. You would need the valve guides machined for more lift. $$$

2. You definitely need higher compression pistons for 480hp. If you said 425hp, then I would think it would be ok.
 
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junkyard kid said:
Hoping to get it to run strong race application
Click to expand...
If it's a street car, you first have to decide how much streetability your willing to sacrifice, how deep of gears and high of a stall your willing to use. Heads are where the power is at, cam intake, headers etc.. allow you to extract that power, weaker heads gonna need more aggressive cam and cr to try and reach any hp. Stock magnum heads can get around 400 hp without going too crazy of a cam (230-235 ish) to gain 80 hp is gonna take a combination of porting cr and more cam depending how well you can port heads, do you have a flow bench, have you ported before ? I'd don't know how crazy of a cam you can get with a regrind.

Like Jersey Devil said 425 hp is a more realistic goal maybe 450 hp if you do a really good job porting and anything over is a bonus.

Plus Magnum heads are known for cracking, you probably don't want to sink a ton of money into them, you'd be miles ahead to pick up a set of speedmasters or second hand aftermarkets heads like older EQ's or Eddies etc...

480 hp 360 is a fairly serious engine gonna have to spin it into the 6000-6500 rpm to get it probably shifting 6500-7000 rpm. Not something you just throw together.
 
 
junkyard kid said:
Was going to get oregon to regrind a Hydraulic roller cam was wanting to see if anyone could maybe give some advice stock internals heads hand ported stainless shorties airgap intake 750 holley spread bore carb
Click to expand...
I think everyone, including myself forgot you were going with a " Regrind". That limits what you can get in duration and lift.

For reference, in my old Hughes catalog, back when they mainly did regrinds.

The cam profiles they listed as "Available for regrinds". Duration @ 0.050"

192/204 on 114 lsa
209/214 on 114 lsa
214/218 on 114 lsa
218/228 pn 114 lsa

All are on 114. Which is ground into the stock cam. This is great for EFI, But gives up alot of hp/torque for a Carburated setup vs. A 108 or 110 lsa.

With the biggest the lift is .544" with 1.6 rockers.

Their biggest regrind with ported heads, Rpm Air-Gap and 750 carb, headers you are looking at around 420hp potential.
 
Jersey Devil said:
I think everyone, including myself forgot you were going with a " Regrind". That limits what you can get in duration and lift.

For reference, in my old Hughes catalog, back when they mainly did regrinds.

The cam profiles they listed as "Available for regrinds". Duration @ 0.050"

192/204 on 114 lsa
209/214 on 114 lsa
214/218 on 114 lsa
218/228 pn 114 lsa

All are on 114. Which is ground into the stock cam. This is great for EFI, But gives up alot of hp/torque for a Carburated setup vs. A 108 or 110 lsa.

With the biggest the lift is .544" with 1.6 rockers.

Their biggest regrind with ported heads, Rpm Air-Gap and 750 carb, headers you are looking at around 420hp potential.
Click to expand...
I think it depends on the core. Some of the magnum cores are ground on a tighter LSA, which would help the OP's cause.

Either way, there's only so much you can do with a regrind. Inability to move the lobes and grinding through a good amount of hardening seem to be limiting factors. At a point, you're better off buying new.
 

mopowers said:
I think it depends on the core. Some of the magnum cores are ground on a tighter LSA, which would help the OP's cause.

Either way, there's only so much you can do with a regrind. Inability to move the lobes and grinding through a good amount of hardening seem to be limiting factors. At a point, you're better off buying new.
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What Magnum coes were on different lsa? None of the 5.2 or 5.9s that I have worked on had anything else.
 
Jersey Devil said:
What Magnum coes were on different lsa? None of the 5.2 or 5.9s that I have worked on had anything else.
Click to expand...
When I inquired with Ken at Oregon cam grinders about having my roller LA core reground earlier this year, he mentioned that there were several LSA's those cores as well as the magnums were ground on. I do recall he said truck cams generally had slightly tighter LSAs.
 
mopowers said:
When I inquired with Ken at Oregon cam grinders about having my roller LA core reground earlier this year, he mentioned that there were several LSA's those cores as well as the magnums were ground on. I do recall he said truck cams generally had slightly tighter LSAs.
Click to expand...
No they weren't... la roller cams I don't know...but Not magnum 5.2/5.9.
 
Here's the grind I got from Oregon. #2204-
213/220 @.050
265/275 advertised
.480/490 lift w/ 1.6 rockers
110 deg. separation
Haven't run it yet, but it's real close to an old Purple Stripe cam from a 340.
 
That's impossible for us to do, because Ken hasn't updated his web site in close to 20 years. He will send you the updated grind list, though.
 
Yup. I'm about to cross that same bridge, same engine but different application.
Pretty much stock build with most likely a TQ up top, going into an 80s 3/4 ton.
 
From what I have collected in my notes over the years,
the 5.9 Dakota cams were 250/264/110, installed at 119, Overlap was a gross 37*
This kept the cylinder pressure low enough to stay out of detonation, and gave her the potential for better fuel-economy.
But it absolutely killed the overlap cycle, which with log exhausts, was fine.

When you run this cam with headers, you HAVE to degree the cam, back to near split overlap; say in at 106. This will center the meager overlap, but add 14 degrees of compression, stealing it from the Power-cycle.
This will raise the cylinder pressure of a 9.2 engine,
from ~147psi@sealevel, to 165. and
the modest 37* Overlap will work for you.
However
this is the slowest-azz roller-cam ever made, IMO, lol,
with 050 numbers of 182/194, and
the lift I have recorded is just 411/430

I have NOT verified these numbers.
Just adding them to the data already presented.
 

I have (had) this cam in a stock bottom end 5.9 with some ported EQ heads from IMM , Dougs headers , air gap and 800 AVS2. It runs great with tons of torque . He can probably still grind it .

I say had because I stroked it to 4”

IMG_3316.jpeg
 
I just paid my bill and the 68 340 cam regrind shipped yesterday $360 with a set of lifters that they recommend.
 
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