need torque monster cam that is spray friendly
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currently have a tsp 233/239. i like how it pulls from 3200 and up. but want that grunt down low. i like how hard my cam hits so id like to keep the sound just want alot mor off idle....any good ideas? im aware of the 228r just sure there are some big torgue cams out there
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I asked Pat G the same thing. Here is the cam recommendation he sent me along with my info:
Cam recommendation: 2002 F-Body with stock LS6 5.7L short block, 65cc stock 243 heads, LS6 intake, ported 78mm TB, M6, 3.42 gear, 1 3/4” long tube headers with no cats, 6800 rpm shift points, 7000 rev limiter, 150 shot N2O.
230/234 .600”/.609” 111LSA +3 advance (with 1.7 ratio rockers)
Comp EPS/LXL lobes 54-000-11 3 bolt cam core
13118R/13160R HR111LSA +3 advance (108 installed intake centerline)
I asked him to spec something for 350+ Torque at 3500 RPM, something that was nitrous friendly and I didn't want to shift too high in the rev limiter; hence the tighter LSA.
Cam recommendation: 2002 F-Body with stock LS6 5.7L short block, 65cc stock 243 heads, LS6 intake, ported 78mm TB, M6, 3.42 gear, 1 3/4” long tube headers with no cats, 6800 rpm shift points, 7000 rev limiter, 150 shot N2O.
230/234 .600”/.609” 111LSA +3 advance (with 1.7 ratio rockers)
Comp EPS/LXL lobes 54-000-11 3 bolt cam core
13118R/13160R HR111LSA +3 advance (108 installed intake centerline)
I asked him to spec something for 350+ Torque at 3500 RPM, something that was nitrous friendly and I didn't want to shift too high in the rev limiter; hence the tighter LSA.
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#12
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what compression are you at right now and what cc are those heads milled to? what do you plan on shifting at? If you have the room for it a 231/238 .617/.615 111+3 on LSL/LXL lobes will love the juice and give you more lowend eventhough the duration numbers look similar to what you already have. I assume that 233/239 is with only 2 degrees of advance
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I should be at 11-1 not sure cc on heads. I got them used. they have been cut .010 and Texas speed said I should be at 11-1....but who knows.I shift anywhere from 6500-800. but can shift lower if need be. the cam I have now was not degreed. or advance cut in. it was just off shelf cam on 112°
#14
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Degreeing a cam is critical.
There is no point in a custom grind when you don't degree it in.
There are many different ways to look at this.
A cam that is a torque monster will probably have too much dynamic to safely spray a lot of nitrous on. Could it be done....on a small shot yes, on a larger shot it will depend on if you're willing to run the right fuel or pull the timing back so far that it runs without knock.
10 ways to skin a cat.
There is no point in a custom grind when you don't degree it in.
There are many different ways to look at this.
A cam that is a torque monster will probably have too much dynamic to safely spray a lot of nitrous on. Could it be done....on a small shot yes, on a larger shot it will depend on if you're willing to run the right fuel or pull the timing back so far that it runs without knock.
10 ways to skin a cat.
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Martin I'm not understanding what your saying about the cam having too much dynamic.....comp? how will the cam affect the compression? also how does spraying a cam with more bottom end tq than what I have effect anything?.
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Nitrous shots require retarding the timing on high dynamic CR's and also careful leaning of the air fuel ratio. Too rich and you've got problems, too lean and you have problems. This is why it is always recommended to optimally tune an NA build before introducing NOS.
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The total duration will determine what your dynamic compression is. The compression the motor actually sees while it is running and not stationary(static compression). The bigger the cam in duration the lower the DCR will be in a nutshell. Smaller the cam the higher the dynamic.
The reason small cams make great torque is due to them having a higher dynamic compression ratio which comes from closing the intake valve sooner than a larger cam would. Closing the intake valve sooner also will take away high rpm power and trade it for lower rpm power.
However while that is well and good, for nitrous you don't want to have too high of a dynamic compression ratio especially while running pump gas.
I can spec you out something that would work well, but some thought must be put into it and an off the shelf cam would probably not fit the bill here as the valve events in a set-up such as this one would need to be tailored to the individuals wants and needs.
Hope this helps.
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Ive always wondered how a small intake duration tight centerline cam would respond. The only one ive seen thats done that was "nitroused383" on here. Something like a 222/228 108+2. It would idle pretty rough but id think make pretty serious power down low, and die pretty quick up top.
But i'm no tech. Just a wannabe.
But i'm no tech. Just a wannabe.
#19
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Ive always wondered how a small intake duration tight centerline cam would respond. The only one ive seen thats done that was "nitroused383" on here. Something like a 222/228 108+2. It would idle pretty rough but id think make pretty serious power down low, and die pretty quick up top.
But i'm no tech. Just a wannabe.
But i'm no tech. Just a wannabe.
It is actually 224/236 110+3 and is one helluva a performer.
We actually converse a lot(me and jason) and bounce a lot of ideas off of each other.
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thanks for breaking down to dummy terms for me. that now makes a lot of sence to me. if you could help me find the right cam id appreciate it. its good to talk to someone w brains....makes me feel smarter lol