Old magnum MP cam info

[volaredon]

I've had this cam for a while now. Just getting around to using it. It was called the "r/t+10."
They also had a "regular" r/t cam available at same time. I'm thinking late 90s era.
Was a broken box special from a buddy that worked at the local dealer at the time, UPS brought it in all taped up. As I remember it was missing a couple of lifters but I have another whole set here anyway so not worried about that.

Does anybody have a cam card from back in the day? I remember the lift was .467/.482
Back in the day most called it "the sausage cam". What did they mean?
Mainly I'm questioning the angle it was ground on, I believe that towards the end of that cam being "an item" it was listed as being ground on a 119*.
I thought I saw somewhere that it was really supposed to say 109*. Anyone have anything on it? And what application it would be "good for"?
Especially as that I have a couple of magnum blocks sitting around, and I just went on a long ride today (CL wild goose chase) to pick up a mate to my one uncracked magnum head.
The guy ran into same issue I did long ago where I went thru a handful of sets of them and ended up with only one good head out of a few sets on hand. Fortunately it was cheap, I'm sure he spent more at the machine shop having it checked out than what I paid for it.

 

[volaredon]

Please no criticism of stock magnum heads keep it to talk about the cam I asked about thanks

 

[273]

This is what I found, no idea if true.

"It's the RT+10 cam.

duration - 272/278

o-lap - 37

centerline - 119

lift - .467/.482

recom. spring - P5249464"

 

[RustyRatRod]

This is the first I've heard of it. @Bighead440 is really sharp with this stuff. Maybe he will chime in.

 

[volaredon]

I seem to remember (mis remember?) that this cam is really 109* not 119, that "119" is really a misprint. Anyway to verify besides sending it to someone with a "cam doctor"?
Would this be a good cam for torque, in a heavy truck that is used as a heavy truck? (3/4-1 ton)
That hauls lumber from Menards or a load of dirt when needed or hauls a camper?

 

[volaredon]

Anyone?

 

[mbaird]

Probably not a one 109 centerline if it was meant for a fuel injected vehicle is my guess

 

[volaredon]

That's just what I remember being talked about when this came was a current production part.
I'm looking possibly using it in a magnum engine with a Hughes cam extender and mechanical fuel pump eccentric.
How would this cam be in a 3/4 ton truck that tows? Is there any way to verify what it's actual specs are without sending it to someone with a "cam doctor"? I don't know who I'd even send it to for that

 

[NC Engine Builder]

Built a budget stock type 360 magnum rebuild a few years ago, but with a carb and air gap intake. Used that old "RT" cam, and the engine ran, and sounded dead stock. I thought it sucked personally, much better choices. I used it cause it sat on my shelf for probably 20 years.

 

[volaredon]

Same reason I want to use this one. It's been sitting here

 

[mgoblue9798]

Lots better cam choices out there. I would sell that RT cam and get something like the Hughes 208 @ 050 cam or a regrind from Oregon cams.

 

[rumblefish360]

Probably not a one 109 centerline if it was meant for a fuel injected vehicle is my guess

100%!

 

[volaredon]

I just remember what was being told about that cam back in the day... about the 119 being a print mistake....

 

[mbaird]

I just remember what was being told about that cam back in the day... about the 119 being a print mistake....

Most likely it is somewhere in the low to middle teens is it a performance cam for an efi engine .
Nothing wrong with a 112-115 cam . FAST class engine builds use cams with high LSAs to manage low end power/traction . As well as timing,compression etc….

 

[volaredon]

You guys said something about "just" an R/T cam this is the one, they had that and the one I'm talking about is the "R/T+10". I don't remember or have the specs of the regular R/T cam here. But the "+10" was supposed to mean that much more HP over the R/T one. Don't know that I'd go thru a cam swap for a measly 10hp, I wouldn't swap between these, but if starting from stone stock and had to get one or the other as compared to that, and was given the choices of "cam 1" with "x" amount of HP and "cam 2" that claimed "x plus 10" HP and they were similar money id probably go for the 10hp bonus. ... Though the seat of the pants probably wouldn't notice the difference between "only" 10 hp

 

[volaredon]

Ok
I'm wanting to spec out a cam for this build.
Most of you have seen my comments on what I want this engine for. I want somewhere around an actual 9-1/2:1, I'd bet that actual as built won't meet advertised CR, as the older engines than the magnum series. were, almost always less than advertised.
3/4 ton, reg cab 8' bed, 2wd, 5 speed stick with OD, 3.55 rear, (it's what I have) to something around 32" tires (currently 235/85-16) 360 mag with a 4bbl,
No EFI. Have dual plane M1 coming. Which is a dedicated square bore carb intake,
Will be running AC, power steering and brakes.
For carbs I have a handful of 600-625 Carterbrock, and a 9801 TQ with built in electric choke if I could make it work with rest of combo...98% SURE there won't ever be any kind of Holley on there .. I've never had any luck with them.
want to improve on factory torque.
Would like a roller cam that has the fuel pump eccentric cast in.... Stock distributor, either stock Mopar ECU or maybe try an HEI.
Trying to figure out cam specs is confusing, makes my head hurt. Granted I don't work with those kind of numbers very often.
Most likely will have one reground from Oregon.

Which brings up another of too many questions. I've heard of a "Delta cams" I believe somewhere in Washington State.... Anyone familiar with them? I guess they're a regrinder similar to Oregon cams.
If I were going flat tappet I was thinking something around a comp 260-272 range, but the equivalent in a roller/ since that's what the magnum has... Am I close to the right cam for an engine like this?
Would a late 80s factory roller LA cam be a good and usable core for a regrind?
I have a 76 360 and a 78 318 used, stock flat tappet cam sitting here but am I right in saying those couldn't be reground into a roller?

 

[mgoblue9798]

Just call oregon cams. Tell them your build particulars, and let them grind one for you sir. They will know better than most. Need to get your actual compression ratio calculated first though.