LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Head Questions??

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Old Aug 11, 2009 | 02:15 PM
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Default 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?
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Old Aug 11, 2009 | 02:45 PM
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AI 200cc and you will never look back.
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Old Aug 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
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Old Aug 11, 2009 | 03:09 PM
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Spend the extra money in case of a future build...that way you won't be kicking yourself wishing you went with the 200cc. Do it right the first time.
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Old Aug 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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Old Aug 11, 2009 | 03:56 PM
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I agree with the rest, get the Ai 200cc heads. That way when you get tired of your small cam and step it up, you'll still have great heads that will work with it.
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Old Aug 11, 2009 | 04:10 PM
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I think that you will find that your stock castings are 561's which aren't good for porting. Look for some earlier castings or, better yet, go to an aftermarket or LT4 casting.
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Old Aug 11, 2009 | 04:17 PM
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It would be better to go with the larger package, but then again its always easy spending someone else's money.................
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Old Aug 11, 2009 | 04:18 PM
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That is not an issue, I purchased a set of 643s to send off for porting just not sure how big to port them, thanks tho
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Old Aug 11, 2009 | 04:19 PM
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Originally Posted by djjab57
It would be better to go with the larger package, but then again its always easy spending someone else's money.................
On that note...might as well buy their 200cc H/C kit and install their 226/234 or 230/238 cam.
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Old Aug 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.
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Old Aug 11, 2009 | 04:23 PM
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Originally Posted by JB_97ws6TA
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.
Funny, I don't remember saying anything negative about AI's 190cc heads. I was talking head porting in general...you looked into it way too deep. I was just trying to steer you in the "Better" of the two directions. Either way you go, both will retain great DD driveability. I have a larger cam then you, 3600 stall and 200cc heads and it is more or less my DD during the summer. If you have any future plans on building it, the 200cc heads will be a wiser choice for you.
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Old Aug 11, 2009 | 04:25 PM
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Originally Posted by ss.slp.ls1
On that note...might as well buy their 200cc H/C kit and install their 226/234 or 230/238 cam.
LOL how about a 226/232 .565/.565 112 LSA on a LE2 package
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Old Aug 11, 2009 | 04:26 PM
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Originally Posted by JB_97ws6TA
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.
Really? With my CC503 I noticed virtually no loss in lowend power whatsoever. And my cam is larger than yours.
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Old Aug 11, 2009 | 04:29 PM
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Originally Posted by ss.slp.ls1
On that note...might as well buy their 200cc H/C kit and install their 226/234 or 230/238 cam.
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.
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Old Aug 11, 2009 | 04:30 PM
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Originally Posted by JB_97ws6TA
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.
I have to pass the sniffer test as well look at the set up i just purchased up above
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Old Aug 11, 2009 | 04:31 PM
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Originally Posted by JB_97ws6TA
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.
Wrong about them being off the shelve cams. Lloyd will tell you that himself. Both my old LE cam and AI were custom ground to the specs I chose.
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Old Aug 11, 2009 | 04:32 PM
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Originally Posted by ss.slp.ls1
Really? With my CC503 I noticed virtually no loss in lowend power whatsoever. And my cam is larger than yours.
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
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Old Aug 11, 2009 | 04:32 PM
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226/232 .565/.565 112 LSA on a LE2 package
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Old Aug 11, 2009 | 04:35 PM
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Originally Posted by Elliott's94Z
Wrong about them being off the shelve cams. Lloyd will tell you that himself. Both my old LE cam and AI were custom ground to the specs I chose.
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
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