Originally Posted by 1967chevelle454
What's the street-ability and idle quality on the magnum muscle ls-6 cam? Also how do mechanical cams compare to hydraulic in reliability and maintenance?
It's very similar to the hydraulic 292H magnum cam. has the same rough racey idle. But makes more torque and power and will rev higher because it is a mechanical lifter cam. They are more responsive as a rule.
Take a hint from GM , Ford and Chrysler. All the big power top of the heap muscle car motors had a solid lifter cam. 426Hemi, LS-6 454 427-L88
Boss 429 429SCJ 440 Max wedge race, 302/Z28 327-375HP FI Boss 302 all had solid lifter cams.
Reliabilty is the same. They do require periodic valve lash adjustment as part of your tuneup routine. Once or twice over a Summer cruise season is plenty.
usually only a few of the 16 valves will need a touch up lash adjustment.
Once you've done the lash routine a few times, its no big deal.
Takes me about 20 minutes. if you change the oil every 5000 miles, then touch up the valve lash every 5000 miles or so.
A BBC has a big heavy valve train and can really use the high rpm benefits of a solid lifter for superior valve train control at high rpm (no lifter pump up).
Both these cams will outperform the 292H cam.
The CB-280S-10 is a little bit tamer than the Comp 294S cam. (shorter intake duration, little less overlap) My favorite "LS-6 cam on steroids cam" for the BBC. it gets the job done nicely.
It's a matter of degree as the car will drive and idle very similar but the solid lifter cams , expecially the CB280S-10 cam will be snappier and torquer with extended power in the upper range. its just a better setup for the BBC.
The idle sounds a bit more "busy" under the hood with a properly lashed solid lifter cam. Its a cool sound that no wimpy hydralic cam has.
These solid lifter Magnum cams are designed to be a "street cam" and not be a pain to live with.
The 294S has a cool sounding "Take No Prisoners" idle yet drives nicely and makes big power. Both, need a 3200-3500 stall converter just as the 292H does. If you want maximum Street/strip performance, either one of these is what you want. The 292H is for the girliemen
. Real men set their own valve lash.