best cam for stock heads?
10-18-2007, 09:39 AM
#21
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I would fix all issues and get back on the Dyno to see where the motor is really at peak performance. Not doubting you but pulling all the way to 7000 grand with stock heads is probably not happening. Most LT's and LS1's with aggressive CAM and HEADS only peaked at app 6000-6300 where the owners THOUGHT that the car was pulling all the way to 7000. You are spinning the motor for nothing, even yet go to the track, do a couple of runs to 7000 then start trying lower RPM shifts, 200 less at a time and see what your MPH is, That will tell you. Do not go by E.T. as there are too many anmolies that contribute to this. Good Luck!!
10-18-2007, 01:39 PM
#22
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I am curious, in the description you said you wanted the cam to beat the ground...how did that work for you...and how big of a stahl are you running with it? Or are you an M6?
10-18-2007, 05:27 PM
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10-18-2007, 09:29 PM
#28
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How are you running such a high rpm zlover. my car tachs out at 5800 and it seems like its not pulling anymore anyways. is your bottom end built? was it tuned to run super high rpm? and is the cam the reason you can run such a high rpm? im sorry for the clueless sounding q's but im fixing to rebuild my car and that cam seems to sound good for me. please give me some more detail about your car b/c it seems very impressive. i just figured if you run an lt1 over 6g's it would throw a rod for sure.
10-18-2007, 09:39 PM
#30
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my motor is rebuilt but nothing aftermarket in the bottom end, just seems like this is where my cams loves to breath, its got plenty of low end as evident from my torque curve but it just keeps climbing. Its not the safest thing to do but i dont plan on leaving the bottom end stock for too much longer, plus it is pretty rare for me to spin it that high.
10-18-2007, 09:45 PM
#31
How are you running such a high rpm zlover. my car tachs out at 5800 and it seems like its not pulling anymore anyways. is your bottom end built? was it tuned to run super high rpm? and is the cam the reason you can run such a high rpm? im sorry for the clueless sounding q's but im fixing to rebuild my car and that cam seems to sound good for me. please give me some more detail about your car b/c it seems very impressive. i just figured if you run an lt1 over 6g's it would throw a rod for sure.
The stock shortblock is stout, the rods are sold aftermarket as good to 450-500hp which is concervative, and general consensus is they are weaker than the crank.
I have been keeping mine below 6400rpms, untouched stock shortblock except an oil pump spring replacement and an all metal oil pump driveshaft.
10-18-2007, 09:50 PM
#32
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Well my bottom end is knocking so idk about spinning 6400 rpms. i either have a wrist pin messed up or a cracked skirt. i will see when i take it apart pretty soon. where can i find the AI cam. Also, the cc306 and 503 too. thanks
10-18-2007, 10:56 PM
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I think I will be going with an AI cam this winter. From what I have heard and read custom grind is the way to go. Then I could get what will work with my car rather than something off shelf, that would be ok but not exactly what I need or want. 
10-19-2007, 07:33 AM
#36
The thing with cams is almost all the off the shelf stuff is compromised knowing most guys will fall into the old "bigger is better" trap. They screw with the specs a little so that too much duration still drived OK. Long as it drives OK and makes more power than stock most guys will be happy. What they do not realize is how much power they are missing.
http://www.babcox.com/editorial/ar/eb90252.htm
Wouldn't say everything he writes is the only right way but this will at least give you some idea of why custom can be better than off the shelf.
BTW guess who he uses for machine work?
http://www.babcox.com/editorial/ar/eb90252.htm
Wouldn't say everything he writes is the only right way but this will at least give you some idea of why custom can be better than off the shelf.
BTW guess who he uses for machine work?
