Pro stock dyno cam change

[pittsburghracer]

Man it doesn’t even look like a cam. Lol

 

[PRH]

That ain’t no 509 cam.

 

[qkcuda]

Those lobes look the same size as the journals. I like the pentastars machined into the engine plate.

 

[RustyRatRod]

I wonder what engine that is? Whatever it is, it's a 60 degree "something or other".

 

[A56]

Author
Prusiensky Racing
Jerry Holcomb 278 308 120 .580 love lift. Now you know

 

[Lefty71]

I don't even understand the bearings, much less the lobes....some sort of bolt-on roller bearing setup??

 

[Cudafever]

It almost looks like, you could change out, one cyl of cam lobes at a time......?
and the cam bearing journals look like they are a two piece deal?./!!!!????

 

[Syleng1]

It looks like a JC Whitney 3/4 cam for sure.
Good for towing and street strip.
Lol!

 

[MOPARMAGA]

Pressed on lobes, looks like

 

[pittsburghracer]

Is anyone else noticing how narrow these lobes are. Not much friction there.

Damn spellcheck

 

[MOPARMAGA]

Is anyone else noticing how narrow these lines are. Not much friction there.

I'm trying to figure out what engine it is

 

[Cudafever]

Yeah, i don't get how it can live with that little of surface/width.
It has to have some serious spring pressure......Right????

 

[MOPARMAGA]

Yeah, i don't get how it can live with that little of surface/width.
It has to have some serious spring pressure......Right????

If you look in the lifter valley I'm seeing pneumatic lifters, possibly

 

[pittsburghracer]

Yeah, i don't get how it can live with that little of surface/width.
It has to have some serious spring pressure......Right????

At 10,500 rpm max limit ya I think that would have some healthy spring pressure

 

[MOPARMAGA]

That's a very common design of camshaft in ohv engines

 

[408 swinger]

Narrow lobes and large wheels on the lifters. Are those the "cartridge" style lifters? They're keyed to the bushing. The bushing and lifter can be replaced together or modually if that's even a word.

 

[Rat Bastid]

I'm trying to figure out what engine it is

The lifter bank angles say it’s a Hemi. A Pro Stock Hemi.

 

[MOPARMAGA]

The lifter bank angles say it’s a Hemi. A Pro Stock Hemi.

Valve springs look wedge to me though.
Nevermind, you're correct it's a hemi

 

[Rat Bastid]

Valve springs look wedge to me though

It’s the picture. If you look real close, you can see the first valve is an exhaust and it’s lower than the next two which are intake valves.

The PS Hemi has a: E II EE II E valve arrangement.

 

[MOPARMAGA]

It’s the picture. If you look real close, you can see the first valve is an exhaust and it’s lower than the next two which are intake valves.

The PS Hemi has a: E II EE II E valve arrangement.

Yeah, I actually went on the link and saw the complete engine. You're correct.

 

[pittsburghracer]

I was trying to check out the plates covering the intake ports and found this.

 

[MOPARMAGA]

I was trying to check out the plates covering the intake ports and found this.

View attachment 1716021255

Yeah those plates are weird

 

[Rat Bastid]

I was trying to check out the plates covering the intake ports and found this.

View attachment 1716021255

Isn‘t that the Ford head? I don’t remember the Dodge using that valve arrangement.

Rumor had it a Ford or two would be used in PS for 2023. Unless they figured out how to make them make power under 11,000 RPM I’m not sure they can compete.

 

[MOPARMAGA]

Whatever it is I need it lol

 

[pittsburghracer]

Whatever it is I need it lol

You couldn’t handle it. Lol. I couldn’t either.