Solid Cam
Solid Cam
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What is the best overall cam for a 383 stroker?
I am thinking of buying a crate engine and the cam options I have Hardened Steel Billet Hydraulic, Roller or Solid cam. I want one that is low maintenance with maximum proformance. This is going to be a weekend warrior show truck. I am learning as I go with this project.
Hi Rob,,,
Cam selection is one of the most mysterious aspects of building a performance engine.
It's Always been like that.
The amazing advances in the:
* Practical Knowledge/Experience gained over the years
*Modern engine,and engineering Science
*And,,Manufacturing Technology
....all seems to only Deepen & Widen the "mystery" of it all
All while ,,"everybody who has an ignition key to something with loud mufflers or shiny wheels is a CAM EXPERT"
A Hydraulic lifter cam is always going to be virtually "maintenance free".
I well recall the era when Hydraulic Cams were quite limited in the level of performance they could achieve.
The Reason was the Geometry and Dimensions of the cam's ramps and such which Physically restricted use of Hydraulics to some rather modest Physical Profiles.
There WERE some extremely strong running Hydraulics---
but they Stopped where Mechanical Cams Started.
Nowdays,,,It's COMMON for Hydraulic Profiles to yield Performance equivalent to "Impossible" in the LATE 70's/Early 80's.
Performancelevels that previously Demanded strictly Solid Lifters,,,and were considered fairly Radical Race cams
Roller Cams:
have always been Ultimate,,because they accomodate Physical,Mechanical DIMENSIONS that ANY flat tappet cam simply cannot handle.
PART of that is about Geometry
PART is about the Strength of the Valve Springs Necessary to Control the Valvetrain at extreme Dimesional & Geometric Profiles.
Simple concept---Rub 2 surfaces together compared to ROLLING one surface across the other.
Like comparing a SLED to a Wheeled Wagon.
Either may be Fine as the Other under a LIGHT load.
But when you're Limited to a Given Size,,,,and begin to VASTLY Overload the carrier,,,
The Wheeled one is a No Brainer choice....it actually becomes Necessary.
Anyway,,,,
In terms of Maintenance,,,Hydraulics win Hands Down.
And in Today's Age,,,
Hydraulics offer very Aggressive profiles yielding fairly extreme levels of performance.
And the Do that while maintaining Stability and Low/No Maintenance.
SOLID Lifters:
are always going to require periodic adjustments.
On a Street Engine,,it's absurd to endure the Effort and Expense and Inconvenience.
And the RISKS of letting the service routine slide "till next weekend,or 2".
Based on what you've stated your goal is,,,and what I know of such endeavors....
Scratch a Solid Lifter Cam OFF the List,and consider it does not even exist.
IDEALLY,,a Hydraulic Roller is "best of all worlds".
It offers Best of Both worlds---yet in NO way can it be considered any Compromise.
They're in a Class all their Own,,
They are STILL Hydraulic Cams,,,,but MEGA-Hydraulics due to the virtues of simply being Rollers rather than Rubbers.
It's possible to get More Effective,Efficient Designs with a Roller than any flat tappet.
So it's possible to get a Physically MILDER ,Gentler Mechanical Action,,,,which actually Fills & Clears the Cylinder BETTER than a "wilder profile" Flat Tappet cam.
More Performance from a less abusive mechanical action.
If You have the option of getting a Hydraulic Roller,,,that's Clearly No-Doubt BEST Choice.
It's More Expensive,,,and you Really Dont NEED it.
But on the Other hand,,,there's Some Value in it as merely a FEATURE to add to your list of SHOWTRUCK's Trix
Most Practical Overall,,
Low Maintenance,,,Reasonable Cost,,and just about any level of performance you can realistically USE on the Street.
"Plain Ol' Hydraulic" takes that honor easily.
I'd say the choice comes down to Either a Flat or Roller HYDRAULIC,,,
depending on your How & Where you want to spend your Budget,,,
and what actual price differences are.
Another suggestion,,,Don't get Over zealous when chosing a specific Profile.
Most common mistake is to OVER-cam an engine.
Many folks underestimate the Negative effects of too aggresive a profile for their application.
If you want to invest the Effort,,,
Contact a few name-brand Cam Grinders.
Be BRUTALLY HONEST about what you REALLY HAVE,,or Truly INTEND to have,,,,as far as every considerable parameter encompassed by Cam Selection.
That's Type of Intake/Exhaust,entire Engine Specs really,,Transmission,,Gear Ratios,Vehicle weight,,,,and how you Want it all to perform.
Get the PRO's recommendations on specific grinds for YOUR Actual set-up,,
and then compare them.
You'll probably be surprised at how similar their Reco's are.
FORGET about asking any Retailer or Vendor or Speedshop.
They are MERCHANTS,,,not Camshaft Engineers.
Though in all fairness,,Lots of Merchants know their stuff quite well.
Getting the Mfgr's Opinions and suggestions,,,
You can be very confident of getting a Cam that Works FOR you instead of against you,,,,and one that will meet your expectations.
And Probably EXCEED your expectations.
And Don't be Surprised when you find that YOUR Personalized recommended BEST/IDEAL grind is several numbers down the list from " Wildest thing " that'll fit in the engine.
Good Luck with your project!
We'll be looking for your future Yahoo Questions of:
"How should I Frame my Blue Ribbon?"
"What's Best Polish for Truck Show Trophies?"
"How do I add a room to my house for all these trophies?"
