Magnum Cam recommendation

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Dan Stratton said:
If you take the MOPAR magnum roller lifter and the lunati roller lifter and put them side by side you will see the oil feed hole in the lifters are in a different location
I tried to use the lunati roller lifters and the rockers never got oil to them but I had good oil pressure still then I switched to MOPAR performance lifters and it works fine and have oil to rockers
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also if you use the lunati cam it is actually made for the la engine and the snout of the cam is to long to bolt the timing gear on tight so you have to use the fuel pump centric from the la engine to take up that clearance so you can tighten the cam gear
 
RustyRatRod said:
@TrailBeast has a good camshaft in his that I recommended. He likes it a lot. Maybe he will chime in.
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That I do, and that you did thank you.
It ran me about 150 shipped for a regrind from Oregon Cam Grinders and is 214/224 @.050 on a 110 LSA and .512 lift hydraulic Magnum roller regrind. (No mechanical pump provision)
Projections were about 420 torque at 3,800 RPM's with a range of 1,500 to 5,500.
It is smooth as silk at anything above idle, but has a light rumpety rump at idle if the A/F ratio is in the high 14's-15's.
 
The Lunati roller cams come both ways "Magnum snout" and "LA snout".
 
TrailBeast said:
That I do, and that you did thank you.
It ran me about 150 shipped for a regrind from Oregon Cam Grinders and is 214/224 @.050 on a 110 LSA and .512 lift hydraulic Magnum roller regrind. (No mechanical pump provision)
Projections were about 420 torque at 3,800 RPM's with a range of 1,500 to 5,500.
It is smooth as silk at anything above idle, but has a light rumpety rump at idle if the A/F ratio is in the high 14's-15's.
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For me, that cam duration @.050 is IMO the first step above stock everyday useage cam that delivers (when properly complimented) an excellent response that can be used everyday with anyone. From new driver to a cranky 101 YO grandma.
YY1 said:
The Lunati roller cams come both ways "Magnum snout" and "LA snout".
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I had such a crappy experience and crappy customer relations with them I doubt I’ll go back ever. Only Paxton was worse.
 
rumblefish360 said:
For me, that cam duration @.050 is IMO the first step above stock everyday useage cam that delivers (when properly complimented) an excellent response that can be used everyday with anyone. From new driver to a cranky 101 YO grandma.

I had such a crappy experience and crappy customer relations with them I doubt I’ll go back ever. Only Paxton was worse.
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Agree with the cam recommend statement , Robert. As for Lunati , who knows anymore? I like Crower , Crane , and Howards.. The retrofit LA cam in my Magnum is loosely based on the MP 380/360 crate cam, yet idles better. ...


Howards Cams, Retro-Fit Hydraulic Roller Camshaft Chrysler SB LA 273-360/318, 229/233 @.050, .520/.515, 110 LS
Item Number: 710525-10
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Unit Price: $319.95
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Detailed Description
Howards Cams Retro-Fit Hydraulic Roller Camshaft
From the humble beginnings to an industry leader today Howards Cams™ has not forgotten the customer. Howards Cams™ main objective is to produce the highest quality product at a reasonable price. The name Howards Cams ™ has been synonymous with high performance camshafts in 1945. A great number of valvetrain innovation scan be traced back to Howards Cams™ is at the forefront of the camshaft industry. Money saving cam and lifter sets include cam, a matched set of premium lifters and assembly lube.

Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
100% Rockwell Tested & Parkerized Ensuring the Highest Quality
Hard protective packaging

Part Type: Camshaft
Application: Chrysler SB LA 273, 340, 360 1964-2003 318 1967-1991
Ignition Firing Order: (1-8-4-3-6-5-7-2)
Cam Style: Retro-Fit Hydraulic Roller Camshaft
Basic RPM Range: 2000-6000
Manufacturer's Description: Lopey idle, hot street, great mid range application & torque, 9.5:1 CR, 2500+ stall.
Intake Duration @ .050": 229
Exhaust Duration @ .050": 233
Advertised Intake Duration (@ .006"): 282
Advertised Exhaust Duration (@ .006"): 286
Intake Valve Lift with OE Rocker Ratio (1.50): .520”
Exhaust Valve Lift with OE Rocker Ratio (1.50): .515"
Intake Lobe Lift: .346"
Exhaust Lobe Lift: .343"
Intake Valve Lift with 1.55 Rocker Ratio: .537"
Intake Valve Lift with 1.60 Rocker Ratio: .555"
Intake Valve Lift with 1.65 Rocker Ratio: .572"
Exhaust Valve Lift with 1.55 Rocker Ratio: .532"
Exhaust Valve Lift with 1.60 Rocker Ratio: .549"
Exhaust Valve Lift with 1.65 Rocker Ratio: .566"
Lobe Separation Angle: 110 Degrees
Intake Centerline: 106 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ½ Turn
Manufacturer: Howards Cams & Racing Components™
Manufacturer's Part Number: 710525-10
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
And it doesn't need a bronze distributor gear...
 
Abodybomber said:
Agree with the cam recommend statement , Robert. As for Lunati , who knows anymore? I like Crower , Crane , and Howards.. The retrofit LA cam in my Magnum is loosely based on the MP 380/360 crate cam, yet idles better. ...


Howards Cams, Retro-Fit Hydraulic Roller Camshaft Chrysler SB LA 273-360/318, 229/233 @.050, .520/.515, 110 LS
Item Number: 710525-10
View attachment 1715133440
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View attachment 1715133441
Unit Price: $319.95
clear.gif

Out of Stock
clear.gif

clear.gif

Quantity



View attachment 1715133442
Detailed Description
Howards Cams Retro-Fit Hydraulic Roller Camshaft
From the humble beginnings to an industry leader today Howards Cams™ has not forgotten the customer. Howards Cams™ main objective is to produce the highest quality product at a reasonable price. The name Howards Cams ™ has been synonymous with high performance camshafts in 1945. A great number of valvetrain innovation scan be traced back to Howards Cams™ is at the forefront of the camshaft industry. Money saving cam and lifter sets include cam, a matched set of premium lifters and assembly lube.

Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
100% Rockwell Tested & Parkerized Ensuring the Highest Quality
Hard protective packaging

Part Type: Camshaft
Application: Chrysler SB LA 273, 340, 360 1964-2003 318 1967-1991
Ignition Firing Order: (1-8-4-3-6-5-7-2)
Cam Style: Retro-Fit Hydraulic Roller Camshaft
Basic RPM Range: 2000-6000
Manufacturer's Description: Lopey idle, hot street, great mid range application & torque, 9.5:1 CR, 2500+ stall.
Intake Duration @ .050": 229
Exhaust Duration @ .050": 233
Advertised Intake Duration (@ .006"): 282
Advertised Exhaust Duration (@ .006"): 286
Intake Valve Lift with OE Rocker Ratio (1.50): .520”
Exhaust Valve Lift with OE Rocker Ratio (1.50): .515"
Intake Lobe Lift: .346"
Exhaust Lobe Lift: .343"
Intake Valve Lift with 1.55 Rocker Ratio: .537"
Intake Valve Lift with 1.60 Rocker Ratio: .555"
Intake Valve Lift with 1.65 Rocker Ratio: .572"
Exhaust Valve Lift with 1.55 Rocker Ratio: .532"
Exhaust Valve Lift with 1.60 Rocker Ratio: .549"
Exhaust Valve Lift with 1.65 Rocker Ratio: .566"
Lobe Separation Angle: 110 Degrees
Intake Centerline: 106 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ½ Turn
Manufacturer: Howards Cams & Racing Components™
Manufacturer's Part Number: 710525-10
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
And it doesn't need a bronze distributor gear...
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I wonder if a stock Magnum slug engine will handle that 1.6 rocker lift @ .555/.549? Hey! More the merry right?!
 
rumblefish360 said:
I wonder if a stock Magnum slug engine will handle that 1.6 rocker lift @ .555/.549? Hey! More the merry right?!
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That's a damn good question... I went 1.5 conversion, because I am so used to 1.5 LA ratio (I did a engine cycle 1.6 rockers, with a lifter body stacked solid with washers ..too close for my call..) A clay p to v mockup , would be needed. (As you already know )
 
I'm a little late to the game, but. ....

If you don't upgrade those springs, you're going to have a motor full of bent valves. Just like me.

Lelo Dart said:
Stock springs are barely good enough for the stock cam. Anything over that will need new springs.
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This guy gets it. Stock magnum redline was what? 5k?
 
jos51700 said:
I'm a little late to the game, but. ....

If you don't upgrade those springs, you're going to have a motor full of bent valves. Just like me.



This guy gets it. Stock magnum redline was what? 5k?
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After mods to cam what did you have to do with computer that’s where I am at right now trying to get it to run right and have power
 
Dan Stratton said:
After mods to cam what did you have to do with computer that’s where I am at right now trying to get it to run right and have power
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That's just it...except for a four barrel my motor was stock and floated the valves.

SCT tuner seems to be the cats meow
 
rumblefish360 said:
For me, that cam duration @.050 is IMO the first step above stock everyday useage cam that delivers (when properly complimented) an excellent response that can be used everyday with anyone. From new driver to a cranky 101 YO grandma.

I had such a crappy experience and crappy customer relations with them I doubt I’ll go back ever. Only Paxton was worse.
Click to expand...

That was exactly what I was going for as a daily around the local towns driver, plus I didn't want to get into durations that might be a detriment to fuel economy when I didn't need it.
I might go a bit longer durations in the future, but we'll see.
Timing was a pretty big deal to me also, as I wanted it right on the edge and got it there.
I run 19-20 initial with 34 total and all in around 2,500 and when I got the vacuum advance dialed in I could actually feel the difference at light throttle in the 2-3,000 range.
It felt like the car rolled easier and needed less throttle to do it.
Been running the same NGK FR5 plugs for close to a year now and they still look practically like new. (Yep the large 13/16 body type in the EQ heads designed for peanuts)
Had to make a special thin wall plug socket for that.:D
I just don't trust a peanut plug with the HEI, but it's probably not warranted and just me.

I watched them pretty close for a few weeks and then checked them again every couple of months from then on.
I couldn't hear any detonation, but with Flowmaster mufflers and 2.5 inch pipes coming out right in front of the tires on both sides it ain't that easy to hear.:D
 
Well....it was a thrash but we made it. We ended up putting this whole thing together in a week. Junkyard 5.9, headman headers, edelbrock intake, 727 out of a van, 3.55 LSD 8.8 rear. We were supposed to leave at 10:00am but didn't even fire the car until 3:00pm. Fired for the first time, checked the fluids, set the timing, loaded her up and road tripped 1500 miles. Only minimal issues on the trip. Got stuck in the staging lanes for hours, got one shakedown pass then the event rained out. :( I'll try to do a more detailed build thread if anyone is interested. Didn't quite make the power I thought it would so I hoping a cam swap really wakes it up. I really appreciate all of the help from the board!


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Yea man! If you got some shots, put them up! Your grass roots racing starting at a humble point that many can follow along with.
If you want, to can start up your own car thread as a step by step from start to current. There is always a decent interest in this kind of stuff. A lot of new guys don’t know.
 
rumblefish360 said:
You are AWESOME!!!
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Thanks! We had a great time doing it. Quality time with my son for sure. Since we got back he’s been driving it to school and won’t give the keys back. I’ve built cars worth ten times this much that weren’t nearly as fun.
 
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