Head Questions??
08-11-2009, 02:15 PM
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Head Questions?? I was looking into getting my stock castings ported by one of the sponsors on this website and I am torn between the 190 and the 200cc heads. It is mainly a street car with a relatively small cam that should work well with just about anything. For a mainly street car that I don't want to spin higher than 6500-6700 rpm on the track, which size would be best for me and will there be a noticable difference in bottom end between the two on a 383 with cam in sig?
08-11-2009, 02:56 PM
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Either the AI 200cc package or the ones im having done right now the LE2 package. I believe its about 10 more HP. But i guess it depends on your budget, save a couple hundred and get the smaller ones
08-11-2009, 03:44 PM
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What exactly is your definition of doing it right?? I am sure the guys over at AI wouldn't appreciate you syaing that their 190s are "doing it wrong" it is just for different applications. It is my understanding that the smaller intake runners will give you a little bit more bottom end torque but you give up a little bit up top. I would rather sacrifice 15hp up top to retain good drivability. It is not a race car and to be honest I don't want or need to go any faster than 11s.
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08-11-2009, 04:23 PM
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Where is 96capricemgr? I know he went with the 190s and I would like to hear his justification for the smaller heads. Bigger is not always better from what I understand. I have been disappointed with the low end ever since I cammed it and have decided to build a 383 to get some of that low end back. I would hate to spend all that money to get my low end torque back just to throw it up around 3500 rpm because I chose too large of a head.
08-11-2009, 04:23 PM
#12
What exactly is your definition of doing it right?? I am sure the guys over at AI wouldn't appreciate you syaing that their 190s are "doing it wrong" it is just for different applications. It is my understanding that the smaller intake runners will give you a little bit more bottom end torque but you give up a little bit up top. I would rather sacrifice 15hp up top to retain good drivability. It is not a race car and to be honest I don't want or need to go any faster than 11s.
08-11-2009, 04:26 PM
#14
Where is 96capricemgr? I know he went with the 190s and I would like to hear his justification for the smaller heads. Bigger is not always better from what I understand. I have been disappointed with the low end ever since I cammed it and have decided to build a 383 to get some of that low end back. I would hate to spend all that money to get my low end torque back just to throw it up around 3500 rpm because I chose too large of a head.
08-11-2009, 04:29 PM
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I still have to pass a sniffer check so a cam that size is out of the question, not to mention I am happy with my cam. I think it is hilarious that people call the AI and LE cams "custom" They are still an off the shelf cam, they just come off of THEIR shelves instead of larger manufacturer's shelves. They use similar lobes to XFI or Voodoo series and advertise their lift numbers with 1.6 rockers opposed to 1.5.
08-11-2009, 04:30 PM
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I still have to pass a sniffer check so a cam that size is out of the question, not to mention I am happy with my cam. I think it is hilarious that people call the AI and LE cams "custom" They are still an off the shelf cam, they just come off of THEIR shelves instead of larger manufacturer's shelves. They use similar lobes to XFI or Voodoo series and advertise their lift numbers with 1.6 rockers opposed to 1.5.
08-11-2009, 04:31 PM
#17
I still have to pass a sniffer check so a cam that size is out of the question, not to mention I am happy with my cam. I think it is hilarious that people call the AI and LE cams "custom" They are still an off the shelf cam, they just come off of THEIR shelves instead of larger manufacturer's shelves. They use similar lobes to XFI or Voodoo series and advertise their lift numbers with 1.6 rockers opposed to 1.5.
08-11-2009, 04:32 PM
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Yeah your are an M6 tho and I am stalled auto, I think a lot of it is in the torque converter but I don't necessarily want to change that so I just wanted to throw some more torque into it so it will feel closer to factory under the stall speed
08-11-2009, 04:35 PM
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I am not saying that you can not get a custom grind cam from them but they advertise several different grinds and I am sure they will try to sell you one of those before they have one ground for you