422 w LS7 top end - Suggest a new cam?
07-06-2009, 09:20 PM
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422 w LS7 top end - Suggest a new cam? Guys I have the ol 422 stroker. It currently runs a 232/240 110+2 .633/.640. The heads are flowing great. An intake seems to be $2000 to gain 30 hp. Is there a new cam profile that bigger cube fellas like you are really liking? This was a custom grind from back when. I was just wondering if there is a sweet spot these days to get even better power -upstairs.
07-11-2009, 02:47 AM
#6
His cam is not quite way too small. He may just be running the wrong lobes, and he is definitely not running the right split for LS7 heads. There is no need to run over 230's duration on the intake side. Look towards the LSXR Vengeance Camshaft. You will be quite happy with the results. BTW, what power are you putting down now?
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07-11-2009, 12:52 PM
#9
How can you assume that a vendor's camshaft is a "waste of money"? There are plenty of cams that are specifically designed for LS7 heads from the vendors and perform just as well as any "custom spec" you could hope for. A lot more development goes into a vendors cam then a custom spec, so you also get the guarantee of a proven stick.
07-11-2009, 01:00 PM
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im not trying to bash peoples designs or cams, all im saying is the engine he has, 422 stroker isnt exactly a standard engine size/displacement and he would be much better suited with a cam specd for the specific heads and where they flow best, along with every other component on his build. matched components not only make better power but i beleive they make for a much more reliable setup. ive just always felt that with off the shelf cams you get off the shelf numbers. same as everyone else. theres nothing wrong with that i just feel that a custom cam is better. just my opinion. and what i was getting at with "a waste of money"(wasnt attempting to bash) is that if your going to spend the money on a 5-7k long block setup why not spend a bit extra for a camshaft specifically designed for what your going to be using it for, whether that be a specific amount of boost, nitrous shot , n/a compression? thats all im saying.
07-15-2009, 03:06 PM
#13
It really depends on how much more cam you want to put up with. We have multiple grinds specific for the LS7 setups. While you don't quite have the cubes as an LS7, the results will be VERY similar. We're talking 4.100" vs. 4.125" bore size (assuming you've got a 4" stroke setup). It is also going to come down to how much lift your valve springs can support. Our two most popular LS7-based camshafts are our LS7S camshaft that's a 242/252, .650"/.650" (lift with 1.8:1 rockers), 114 LSA and our LS7R that's a 248/256, .658"/.658", 114 LSA. Both of these cams are very popular because they make great power and still can be driven with no problems. I personally ran the LS7R in my '07 Z06. The two cams make within 10 HP of each other. My Z06 produced right at 590 RWHP with the PRC LS7 heads, and the last customer's car made 580 RWHP with PRC LS7 heads with our LS7S cam.
Feel free to call, PM, or e-mail with any questions or concerns. We'll be happy to help you get setup with your new cam.
Trevor
Texas Speed & Performance
Feel free to call, PM, or e-mail with any questions or concerns. We'll be happy to help you get setup with your new cam.
Trevor
Texas Speed & Performance
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07-15-2009, 03:58 PM
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about in line with what trevor said. if it was my car, i would probably run something in the 245/255 range. You might want to go slightly smaller if you want to keep a little more docile.
07-16-2009, 03:45 PM
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from what i am seeing out of the Fast 102mm intake, i wouldnt spend the money on it over the LS7 intake. It seems to give small gains.
Like said above, get yourself a custom specd cam. Contact Ed curtis with flowtech inductions, or Brett Baeur at BRE. They will ask you exactly what parts you have (your setup), what your goals are, how you use you car, what you like and dont like, etc.
the end result will be a cam shaft that does exactly what you want it to do, gives you ppower exactly where you want it, etc.
Like said above, get yourself a custom specd cam. Contact Ed curtis with flowtech inductions, or Brett Baeur at BRE. They will ask you exactly what parts you have (your setup), what your goals are, how you use you car, what you like and dont like, etc.
the end result will be a cam shaft that does exactly what you want it to do, gives you ppower exactly where you want it, etc.
