A ? for some of you more radical cam guys
12-22-2002, 01:42 AM
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A ? for some of you more radical cam guys I currently have the TR224-112 cam and is great, but I’m having an all forged bottom end 348 being built and I get my choice of a custom Comp cam. My dilemma here is do I just re-use the TR224, or should I go for something a bit more radical since I basically can get any grind I want with the new motor? I’m thinking bigger myself, this will be an A4 car with Absolute Speed S2 heads with all bolt on’s and I do plan on using a 200 shot in the near future. I see a lot of reverse split cams out now which would work great for an N/A car, a guy I know spec’d one out for me (226/224 111LSA .590/.561) to work with the AS heads, but what about a 200 shot car? I would think a more traditional regular split pattern would be best. Any suggestions, all I really care about is that it idles and doesn’t surge real bad…
TIA,
Dan
<small>[ December 22, 2002, 01:44 AM: Message edited by: DanZ28 ]</small>
TIA,
Dan
<small>[ December 22, 2002, 01:44 AM: Message edited by: DanZ28 ]</small>
12-22-2002, 05:24 PM
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Re: A ? for some of you more radical cam guys It really depends on what you are trying to set the car up for. Motor or n20? I would either keep the TR224 cam or look into something along the lines of 224/228. This would be a good compromise between the two (motor/n20).
Jason
Jason
12-22-2002, 08:39 PM
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Re: A ? for some of you more radical cam guys Both the 224/228 and 228/228 sound like good options to me. I like the TR224 cam, but I really only got one pass with it at the track before I spun a bearing. I figure I'm getting a cam with the new motor, so might as well take advantage of it, I can always change it back later. What kind of lift would you recomend with these two cams Jason and Ragtop? I plan on using N20, but probably stick to a 150 shot like I have been, and I'm not an N20 junkie, most of my runs will be N/A with an occasional N20 run...I also want something that will work good up to 7k RPM!
Dan
Dan
12-22-2002, 08:47 PM
#6
Re: A ? for some of you more radical cam guys I guess it all depends on what you're wanting to accomplish, as Jason stated. FYI, I picked up 9 RWHP with our 228R camshaft over our 224R. It's an XE-R Comp grind: 228/228, .588"/.588", 111 LSA. I have it in my A4, and it's nice. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> It has a nice thump to it, but I still drive the car quite a bit. It certainly didn't make the car unstreetable by any means.
IMO, there's really no need to design a cam around nitrous use until you get into BIG doses (250+ HP). My business partner, Jason 98 TA, has the 228R in his '99 C5, and he's run a best of 10.51 @ 137 MPH with our heads/cam setup and a TNT 150 shot. FYI, we have a cam sale currently going on. You can check out the details in the sponsor GP and specials section.
Trevor
IMO, there's really no need to design a cam around nitrous use until you get into BIG doses (250+ HP). My business partner, Jason 98 TA, has the 228R in his '99 C5, and he's run a best of 10.51 @ 137 MPH with our heads/cam setup and a TNT 150 shot. FYI, we have a cam sale currently going on. You can check out the details in the sponsor GP and specials section.
Trevor
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12-22-2002, 08:55 PM
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Re: A ? for some of you more radical cam guys If you are looking to pull to 7k, look into something along the lines of what Trevor mentioned. I also agree with him that a single pattern cam would offer the best of both worlds. This is what I would lean towards actually. I think a 228/228 114lsa cam that Trevor sells would do great!
Jason
Jason
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12-23-2002, 12:52 AM
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Re: A ? for some of you more radical cam guys Well, as far as what I'm trying to accomplish, it seem's to change about every two weeks <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> , just can never make up my mind. The 228/228 is looking good right now. Should I go with the 114 LSA, or a 111/112? BTW Trevor, glad to hear you stayed streetable with that cam in an A4. You have some nice grinds on the cam sale and I would pick one up from you in a minute, but since I'm buying the ARE 346 complete forged short block, Barry say's I get my choice of any grind Comp Cam I want. I don't really know what I'm supposed to supply him with exactly, but I guess he will let me know and I'm pretty sure they use the XE-R grinds. That C5 trap speed is hauling at 137 MPH. All my nitrous runs were with the Comp 216/220 cam and pulled me to 10.8@126 with a 150 shot, so I know split durations like the juice <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> .
BTW, you guys are awesome, appreciate all the info...
Dan
<small>[ December 23, 2002, 01:00 AM: Message edited by: DanZ28 ]</small>
BTW, you guys are awesome, appreciate all the info...
Dan
<small>[ December 23, 2002, 01:00 AM: Message edited by: DanZ28 ]</small>
12-23-2002, 10:10 AM
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Re: A ? for some of you more radical cam guys I know of several guys on this forum that have made HUGE gains with the 227/224 cam...
I'm going to put that one in my formula here pretty soon.
Oh...who's building your 348? Just curious...
I'm going to put that one in my formula here pretty soon.
Oh...who's building your 348? Just curious...
12-23-2002, 02:10 PM
#11
Re: A ? for some of you more radical cam guys Hey Dan, what in the world are you going to do about smog? What about keeping the duration small IE 221/224 with some big lift .600/.610. on say a 112. Your getting dual spring heads.. I'm no cam expert but seems like something like this would let in just as much air as some larger durration/low lift cams.. It's not a daily driver anymore.. Or wont be. I think with something like that you could still drive it to Sac to go racing.
Shoot me an e-mail as I know someone you should talk to here in Redwood City. He understands cams very well as that is all he does in his business. He might be able to give you some insight as well..
Shoot me an e-mail as I know someone you should talk to here in Redwood City. He understands cams very well as that is all he does in his business. He might be able to give you some insight as well..
12-23-2002, 09:30 PM
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Re: A ? for some of you more radical cam guys Shaun, I'm open to something different! I was reading this https://ls1tech.com/ubb/cgi-bin/ulti...c;f=1;t=008209 and was kinda thinking about it, but hate to be a guinea pig. Smog is not an issue right now, I won't pass anyway, when the time comes, I will put the stock cam back in. I definately want this to be streetable though and drive where ever and when ever I want, especially to the track. that .600/.610 may be a bit much lift though. Maybe a compromise of something like a 222/226-590/570-114 or 226/226-575/575-114. I think I'm more confused now than when I started <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> .
Dan
Dan
12-23-2002, 09:38 PM
#13
Re: A ? for some of you more radical cam guys I'd go with the XE-R lobes, you should have valve reliefs so P/V is not an issue. The 228/228 on a 113 should be streetable. I'm going to try it on a 114 or 115 and go for that wide flat power curve.
