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Old 11-13-2006, 08:14 PM
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Default Cam Ideas

Ive been tossing around a few different ideas, and this is what i cam up with 243/248 .653/.648 109+4 this is on the new XFI solid roller lobe. This will be in a stock bottem end with a set of prc stage one heads... Cam experts whats your .02
Old 11-13-2006, 08:18 PM
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Should idle like stock.

Hello rod bolts.
Old 11-13-2006, 08:20 PM
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yeah, rod bolts and fly cutting
Old 11-13-2006, 08:21 PM
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dam you'll have to spin that biatch to 7 plus grand
Old 11-13-2006, 08:22 PM
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i was thinking along the lines of 7200-7400
Old 11-13-2006, 11:46 PM
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im slowly understandin cams and stuff guys. someone please explain to me "rod bolts and fly cutting".... i understand cam specs... but what does the +4 after the LSA mean? sorry to rob the thread
Old 11-14-2006, 02:18 AM
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rod bolts are the bolts that go into the connecting rods... the connecting rods connect to the piston and and crank.
Old 11-14-2006, 02:37 AM
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stock pistons and .653 lift hmmmm
you have to do alot of fly cutting man

good cam though
Old 11-14-2006, 02:46 AM
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It isn't the lift that determines the "flycut". It is valve events in general. Intake/exhaust duration and lift + lobe separation. You know that is a whole different animal going solid. Valve adjustments will be critical periodically. I hope you arent planning on DD'ing this cam.
Old 11-14-2006, 02:50 AM
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Originally Posted by sdavis2702
i understand cam specs... but what does the +4 after the LSA mean? sorry to rob the thread
That is the advance ground into the cam. Most off the shelf cams are +2 or +4.
Old 11-14-2006, 06:39 AM
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The wont be DD, but it will see some street time. I dont mind tinkering and what not... so valve adjustments isnt a big deal
Old 11-14-2006, 06:52 AM
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With that cam you aren't going to make any useable torque or hp below 4K rpm, not a street friendly cam at all. Great for WOT but that's about it.
Old 11-14-2006, 07:10 AM
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Originally Posted by SOMSS
With that cam you aren't going to make any useable torque or hp below 4K rpm, not a street friendly cam at all. Great for WOT but that's about it.
Im not building this for the street, but it will see some street time. It wont be very much, but with a 4600 stall hp and tq down low shouldnt be a problem just press down with the right foot a little more
Old 11-14-2006, 07:13 AM
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This cam isnt much bigger than the T-rex this is a solid roller lobe with 2.5 degrees more overlap
Old 11-14-2006, 07:22 AM
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i would like to get a set of the new trick flow heads and have them milled down to 58ccs and run a .040 head gasket, but i dont know if i can make it all fit... Anyone else try something like this, or am i asking for too much lol
Old 11-15-2006, 12:19 PM
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what would you say the highest DCR you can run with 93 octane?
Old 11-15-2006, 02:23 PM
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Originally Posted by The1N_only
This cam isnt much bigger than the T-rex this is a solid roller lobe with 2.5 degrees more overlap
By the time your lifter clearance is taken up, you'll probably end up smaller effective duration than a TRex.

Still, not a cam for the faint of heart. Neither is a 4600 stall. Good luck with your build.
Old 11-16-2006, 03:40 PM
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Your cam is showing to have a 109* LSA with 4* of advance ground into it, giving you your intake centerline of 105*. You can also figure your exh centerline from this info, which is 113*. This is how the cam companies reference things to make it faster for them when they go to grind a cam.
Have fun with your combo. I hope that nothing decides to come apart on you.
Old 11-17-2006, 02:22 AM
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27° of overlap will be a prostock idle.
Old 11-17-2006, 06:24 PM
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Originally Posted by orangeapeel
27° of overlap will be a prostock idle.
Pro Stockers idle pretty nice compared to some of the LSX "cam only" cars I've seen.



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