Magnum questions?

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mycuda

mycuda

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1- is there a stock mag head with Springs to handle 550 lift cam?
2- can I re- use roller cam lifters?
Any way to check them?

Thanks in advance.
Dave
 
mycuda said:
1- is there a stock mag head with Springs to handle 550 lift cam?
2- can I re- use roller cam lifters?
Any way to check them?

Thanks in advance.
Dave
Click to expand...
I'm just shopping for a cam for my 5.9 and one thing I've learned is that the stock Magnum springs are very weak, if you're going with Any cam upgrade you will have to do springs as well. And I've been told you can reuse the lifters if they look good. Not no idea how to check them
 
The lifters can be re used as long as the rollers are smooth on their OD, roll smoothly and pass a visual surface and cup inspection.
The factory Magnum heads can only go to about .500 max lift without cutting seats or using longer valves and matching springs.
My cam is .512 and I had to get the special retainers for it to go to that safely.
There is no way an uncut stock Magnum head is going to take .550 lift without longer stems and springs.
 
Going to .550 lift on a stock Magnum head and springs isn't going to happen.
It takes cutting the seats or longer stem valves with matching springs for that lift, or you could get that lift with the Hughes retainer set made for .620 coil bind specs and that set comes with new springs made for that lift.
Hughes Engines

The lifters just need a good inspection of the roller surfaces, outer shell and pushrod cups.
The rollers should all be about the same, as in how tight they are on the roller axle. (no notable looseness)

I have about 10 months on my 5.9 (probably 15,000 miles) with the original pushrods and lifters with the kit from Hughes and it's running great.
 
TrailBeast said:
Going to .550 lift on a stock Magnum head and springs isn't going to happen.
It takes cutting the seats or longer stem valves with matching springs for that lift, or you could get that lift with the Hughes retainer set made for .620 coil bind specs and that set comes with new springs made for that lift.
Hughes Engines

The lifters just need a good inspection of the roller surfaces, outer shell and pushrod cups.
The rollers should all be about the same, as in how tight they are on the roller axle. (no notable looseness)

I have about 10 months on my 5.9 (probably 15,000 miles) with the original pushrods and lifters with the kit from Hughes and it's running great.
Click to expand...

Thanks trail.
I was told only needed to change Springs on stock magnum heads?
Is that wrong?
Summit (comp cams) sells cam I'm talking about.

Thanks.again
Dave
 
mycuda said:
Thanks trail.
I was told only needed to change Springs on stock magnum heads?
Is that wrong?
Summit (comp cams) sells cam I'm talking about.

Thanks.again
Dave
Click to expand...
Please send me specs on cam you used

Thanks, Dave
 
mycuda said:
Also. You have 4spd or auto?
I'm going 4spd.

Dave
Click to expand...

It's an auto overdrive from a Dakota.
The cam is an Oregon cam grinders regrind 214/224 .512 lift that I picked for torque that supposed to do 415lbs at 3,500 RPM's.
The bottom is stock but it has the EQ heads with the LA bolt pattern intake mounting.

I think the springs were close but doable but the retainer to valve stem seal was what would hit.
Problem is that the springs suck anyway, so I felt I would be well off doing that Hughes spring and retainer set.

You know who could tell you exact and for sure would be Evan (magnummopar) on here.
 
TrailBeast said:
It's an auto overdrive from a Dakota.
The cam is an Oregon cam grinders regrind 214/224 .512 lift that I picked for torque that supposed to do 415lbs at 3,500 RPM's.
The bottom is stock but it has the EQ heads with the LA bolt pattern intake mounting.

I think the springs were close but doable but the retainer to valve stem seal was what would hit.
Problem is that the springs suck anyway, so I felt I would be well off doing that Hughes spring and retainer set.

You know who could tell you exact and for sure would be Evan (magnummopar) on here.[/




i ran a hughes .544 lift cam with just a spring change on a stock head with no issues
Click to expand...
 
jdsduster said:
i ran a hughes .544 lift cam with just a spring change on a stock head with no issues
Click to expand...

Well, there ya go then. :D
Evan would know within thousands what you can do, but with mine I remember it being questionably close.
 
TrailBeast said:
Well, there ya go then. :D
Evan would know within thousands what you can do, but with mine I remember it being questionably close.
Click to expand...

Thanks for all replies, not sure yet but gives me some thought pattern, this is a low buget get in car thing for many other reasons alone.

Dave
 
Can't go much over .500 lift. I bought hughes springs and retainers, stock heads ended up with a .512 lift camy from Hipotek. They are awesome there. I have videos of checking cleaeance. Rite at about .530 lift the retainer/lock hits the valve seal.
 
Shainesboostin said:
Can't go much over .500 lift. I bought hughes springs and retainers, stock heads ended up with a .512 lift camy from Hipotek. They are awesome there. I have videos of checking cleaeance. Rite at about .530 lift the retainer/lock hits the valve seal.
Click to expand...

Im looking at Comp Cams CCA-20-745-9 .480 lift
Can I get away with same springs for basically stock motor/ manual trans street use?
Appreciate the response......
Thanks, Dave
 
mycuda said:
Im looking at Comp Cams CCA-20-745-9 .480 lift
Can I get away with same springs for basically stock motor/ manual trans street use?
Appreciate the response......
Thanks, Dave
Click to expand...

I wouldnt. That cam will be safe for sure with stock heads, and probably fine with the stock springs. But for 203$ for springs, retainers and locks it's something to consider. The stock springs really are weak.
Here's a link. This guy's good.
Dodge Magnum 5.2/5.9 Valve Spring Kit Wiith Matching Retainers and Keepers
 
They are off. Did a visual cant see anything? Is there certain areas by valve passages to look for?

Thanks
 
mycuda said:
They are off. Did a visual cant see anything? Is there certain areas by valve passages to look for?

Thanks
Click to expand...

Get them Magnafluxed because its almost guaranteed that they are, Now, does that mean anything?? Thats up to you. Mine were and i was on the fence for 2 months on whether or not to replace them and like many opted to go with EQ's. Waiting for them to show.

Jake
 
xLURKxDOGx said:
Get them Magnafluxed because its almost guaranteed that they are, Now, does that mean anything?? Thats up to you. Mine were and i was on the fence for 2 months on whether or not to replace them and like many opted to go with EQ's. Waiting for them to show.

Jake
Click to expand...
Jake, Your Inbox is full again.
Please check our conversations.....I have a Problem, Might be nothing though.
Thanks...Eric
 
Shainesboostin said:
Can't go much over .500 lift. I bought hughes springs and retainers, stock heads ended up with a .512 lift camy from Hipotek. They are awesome there. I have videos of checking cleaeance. Rite at about .530 lift the retainer/lock hits the valve seal.[/QUOTE. Is it the hpt210xp?
Click to expand...
Shainesboostin said:
Can't go much over .500 lift. I bought hughes springs and retainers, stock heads ended up with a .512 lift camy from Hipotek. They are awesome there. I have videos of checking cleaeance. Rite at about .530 lift the retainer/lock hits the valve seal.
Click to expand...
Hpt210xp?what's it in?experience with it?
 
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