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Largest cam that'll fit my current heads/springs setup...

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Old 07-10-2008, 06:27 PM
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Default Largest cam that'll fit my current heads/springs setup...

Now that I have fully ported 243 heads I'm somewhat regreting going with a reverse split cam(X1). However the heads were just ported and assembled with PAC beehives rated to .600" lift and I do not want to change springs period, if a spring change is required to benefit from a cam swap I'll just keep the current cam. Also it's a stock bottom end LS6 and the heads are unmilled but I did use .040" cometic gaskets. What's my options? It's not a daily driver but I want the most power I can get without sacrificing a lot of bottom end torque. I'll be doing the new Weiand intake also and I'd like to see 460-470rwhp with a peak around 6,600-6,700 if possible.
Old 07-10-2008, 06:56 PM
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Shoot Patrick G and / or Predator Z a PM and ask them. They're big time cam gurus. While you're at it you can shoot me a PM of your avatar in full size along with the other pics from the set for giving you that helpful information.
Old 07-10-2008, 07:01 PM
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I'm really liking the Vengeance VRX5 but I don't know how bad it'll beat up the beehive springs. I'll only put 2,000-3,000 miles a year on the car if that.
Old 07-10-2008, 07:13 PM
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i know the vindicator is considered the biggest cam for stock heads with no flycutting but that is for the ls1, there is also the street sweeper cam that is a monster also look up those two.
Old 07-10-2008, 07:59 PM
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Well for a general idea Mike at TEA said I could mill my stg 2 LS6 heads (2.04 intake valve) to 60cc and not have to flycut with stock MLS head gaskets, this is with my 233/239 cam
Old 07-10-2008, 09:34 PM
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Originally Posted by 180ls1
i know the vindicator is considered the biggest cam for stock heads with no flycutting but that is for the ls1, there is also the street sweeper cam that is a monster also look up those two.
The vindicator won't clear without flycutting since I've got the .040 gaskets, I've already asked.
Old 07-10-2008, 11:31 PM
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vrx5 shouldnt beat up valve springs...im going to run that on my vette...will install in about a month....they have way more aggressive lobes than what the vrx5 has xe xer lobes
Old 07-11-2008, 08:00 AM
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Originally Posted by Kurtomac
vrx5 shouldnt beat up valve springs...im going to run that on my vette...will install in about a month....they have way more aggressive lobes than what the vrx5 has xe xer lobes
Apparently it's the exact same grind as the HPE C+
Old 07-11-2008, 09:14 AM
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What don't you like about the X1. Those are good #'s without a Fast intake. And 375+ tq from 3700-5700rpm?????
Old 07-11-2008, 09:38 AM
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Originally Posted by 04gtod
What don't you like about the X1. Those are good #'s without a Fast intake. And 375+ tq from 3700-5700rpm?????
I wasn't too impressed with my cam-only numbers which were 387rwhp and I think 378rwtq. There are a LOT of cam-only Z06's making 420-430rwhp with a streetable camshaft. The reason my numbers look good is because the heads picked my car up 32rwhp. If you'll click on the dyno sheet you'll see the pull before and after the head swap.
Old 07-11-2008, 11:32 AM
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Originally Posted by VIPERBLUELX
I wasn't too impressed with my cam-only numbers which were 387rwhp and I think 378rwtq. There are a LOT of cam-only Z06's making 420-430rwhp with a streetable camshaft. The reason my numbers look good is because the heads picked my car up 32rwhp. If you'll click on the dyno sheet you'll see the pull before and after the head swap.
I think a ported Fast 90 would pick up 25hp and 10-15tq. How does that cam drive. Any bucking or surging at idle or low rpm cruising. I made 405/372 w/o the Fast.
Old 07-11-2008, 11:50 AM
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Originally Posted by 04gtod
I think a ported Fast 90 would pick up 25hp and 10-15tq. How does that cam drive. Any bucking or surging at idle or low rpm cruising. I made 405/372 w/o the Fast.
no bucking or surging, drives almost as good as stock

You made those numbers through an automatic too, right?
Old 07-11-2008, 03:09 PM
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Originally Posted by VIPERBLUELX
no bucking or surging, drives almost as good as stock

You made those numbers through an automatic too, right?
Yes. With a locked converter. I ask about driveability because my 224 cam surges at idle. If I were an M6 it would not be an issue.
Old 07-12-2008, 01:20 AM
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Are you dyno racing?
That is a good combo you have, just need to finish it up with the rest of the bolt ons, 92/92, more tuning.
You can get an adjustable T-Chain and retard the cam 2 *, that will give you another 200 rpm on top with useable power.

You hae a 10 second capable combo, you just need to tweak it properly.
Old 07-12-2008, 02:08 AM
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I agree, I would at least go with a ported 90/90 because just about any cam you go with that would make enough power to justify the money and work will require you to change the springs.
Old 07-12-2008, 06:58 AM
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Originally Posted by PREDATOR-Z
Are you dyno racing?
That is a good combo you have, just need to finish it up with the rest of the bolt ons, 92/92, more tuning.
You can get an adjustable T-Chain and retard the cam 2 *, that will give you another 200 rpm on top with useable power.

You hae a 10 second capable combo, you just need to tweak it properly.
Sorry Predator, Is this better? I picked up 2 tenths and 3mph with tha Fast 90 setup. I agree on the no dyno racing.
Old 07-12-2008, 07:36 AM
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Originally Posted by 04gtod
Sorry Predator, Is this better? I picked up 2 tenths and 3mph with tha Fast 90 setup. I agree on the no dyno racing.
I was talking to OP, but you show a solid gain of about 20>25 rwhp, That intake and more tweaking for the 230/228 will show similar gains
Old 07-12-2008, 09:41 AM
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Originally Posted by PREDATOR-Z
Are you dyno racing?
That is a good combo you have, just need to finish it up with the rest of the bolt ons, 92/92, more tuning.
You can get an adjustable T-Chain and retard the cam 2 *, that will give you another 200 rpm on top with useable power.

You hae a 10 second capable combo, you just need to tweak it properly.
Not dyno racing, just wanting to make sure I've put together a nice combo and that I didn't pick the wrong cam as many others have tried to tell me. I'm supposed to have one of the first Weiand's which i'd use with a LS2 90mm throttle body. I'm sure it might not give the peak numbers a FAST would, but if it'll give me more area under the curve that's all that really matters I guess.
Old 07-12-2008, 09:25 PM
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u might possibly need more tuning i think!! i seen MTI 2E/X1 cars make 440rwhp atleast with there setups without a fast intake.

the X1 is a bad *** street cam from everything that i have read, and guys i have pm.




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