Going for the sleeper angle, but my heads are fully ported. Im running a hotcam on a 110lsa grind, which is kinda annoing right now. So im looking for something a lot more quieter... I would like to get something on the cc306 grind but a 116lsa, wondering is those monster cams would have any lope on a 116lsa or even 117lsa... If you guys need flow numbers let me know.

 

I would just get CC306 on 112lsa and run your idle at about 1K. It isn't very noticeable that way.

 

Trying to bandaid bad manners with a wide LSA will lead to disappointment. If you want a mellower cam pick a mellower cam and concentrate on having it spend lots of time with the valves around peak flow for the heads.

One of the b-body guys tried a 221 intake duration cam on about a 116 idled like stock and performed no better on or off the juice than the GM 845 cam he had before it, actually he after a couple years swapped back too the 845.

 

So 112 lsa with the idle up'd to about 1k should smooth it out?

 

i think you should stay at at least 114. i have a hotcam (112) and it lopes noticibally untill about 1500, with no cats and hooker catback.

 

It can be done, but at a cost.

Lope basically comes from overlap, but traditionally you need overlap to produce good power at higher rpms. If you cut down the overlap with something like a 306 by spreading the LSA, you screw up the important valve events and power goes into the outhouse.

However if you were to use a VERY aggressive lobe profile you could get lots of valve lift with mild duration and have lots of "area under the lift curve" which equates to good airflow with the correct valve opening and closing events, and still have lots of idle vacuum and virtually no lope.

So what's the kicker? The lobes are so aggressive that you need exceptionally good, stiff, strong valvetrain parts. How about a 6 litre carbed SBC (366) which idles at 850 rpm with no lope and and 950 cfm Holley on a single plane, but still gets over 525 lb-ft of torque about 5000 and 550+ fwhp at 64-6500 rpm on 92 octane with a HR. .050 duration was 214/224. OK, the valve train parts cost over $1000, but it can be done.

Now to get those torque an hp numbers, the heads were super with regards to flow and velocity, but good results could be obtained with lesser flow numbers. The whole package needs to work together, of course.

 

Yea see that aint gonna work, lol. I may just stick with what i have at this point, lol... Maybe get a gm845.

 

i beg to differ at 900 mine is screaming i dont have a cat but still

 

why not use a 305 cam with scorpion 1.7 rockers?

 

because he wants power lol max lift and mild duration wont help

 

i looked @ the cc305 when I was first doing my cam, and it was very appealing to me. I looked @ a custom zz4 still no go, then I even looked @ an isky cam I had laying around no dice. So I oped for a lt4 hotcam on a 110lsa, which is nice, except even at 950 idle its lopey as hell.

 

add two mufflers and turn the idle up to 1500 but dont hack the performance

 

Power and speed are not always the same thing though and I think most here want speed. I also think most here are far too willing to overcam their car good for power(at peak) but not necessarily speed which can benifit greatly from higher average numbers. To get full use of peak HP numbers requires a little too much optomization so street cars can be faster with less peak and more average power not to mention more enjoyable to drive and that is the really important part isn't it. The top 6 heads/cam b-bodies are 846,306, 845,227,ZZ3,845. http://dan.esteban.com/impalass/Retu...dClass=4&Sort= The weather info is included the guy with the 846 and 227 frequents this board and maybe he will pop in but by his account the 846 run was under awesome weather otherwise he was not particularly impressed with the 846 right after the install. Granted these are heavier cars than yours but it speaks to the potential of these cams, most here would tell you not to bother with a swap to a cam as small as the ZZ3,227(crane 210/224 is I think what you guys call it) or 845. If you look at that link there are a couple of bolton b-bodies in the mid 12s now too with that stock tiny cam granted good weather and lightening but still it is a heavy car and a mighty small cam smaller than the f-body cam and I think on a tighter LSA.

 

Haha

 

Like i said its not that i dont like my cam, and guys in the b bods are running nice times with the hotcam its just its a bit chopey for me, though i dont have a dyno tune just a mail order, a dyno tune may clear it up... 110lsa is chopey though lol