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T-rex in a 04 z06 question

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Old Nov 7, 2006 | 05:50 PM
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Default T-rex in a 04 z06 question

Yeah I was wondering, if I ran the t-rex cam in my z06 with the stock ls6 heads would I need to flycut my pistons? Also, how low of a LSA could I run? Thanks.
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Old Nov 7, 2006 | 06:22 PM
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Old Nov 7, 2006 | 06:58 PM
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Old Nov 7, 2006 | 07:40 PM
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I don't think you have too, if its just gonna be installing the cam only. If it had milled heads being put on then you would have to flycut the pistons I believe.
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Old Nov 7, 2006 | 08:43 PM
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Yeah thats what I was thinking. Anyone else? Also, whats the lowest lsa I could run?
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Old Nov 7, 2006 | 08:46 PM
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Originally Posted by blackls6
Yeah thats what I was thinking. Anyone else? Also, whats the lowest lsa I could run?
The T-Rex only has one LSA, like 109 IIRC.
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Old Nov 7, 2006 | 08:49 PM
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why dod you want to go with a even lower lsa than what it comes?
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Old Nov 7, 2006 | 09:15 PM
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Don't forget that the LS6 heads you have are 64.45 cc vs. the LS1's 66.67, so that's like milling an LS1 head .015
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Old Nov 8, 2006 | 08:26 AM
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I would call Thunder and ask them to make sure. They could tell you.
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Old Nov 8, 2006 | 08:46 AM
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Originally Posted by ls1muscle
Don't forget that the LS6 heads you have are 64.45 cc vs. the LS1's 66.67, so that's like milling an LS1 head .015
If I'm not mistaken, this is mis-information. Remember how the 5.3L head has better PTV clearance, the LS6 head is the same. The chamber is reshaped not milled.

Also, I wouldn't change the LSA. Probably whatever you're thinking was tried in a test car when the TRex was being developed.

Ben T.
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Old Nov 8, 2006 | 08:59 AM
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t rex is a 110 lsa
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Old Nov 8, 2006 | 09:37 AM
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Ok thanks. I was thinking that I might get better torque if I went went something lower than a 110lsa? Then I might have piston to valve clearance I suppose. Thanks for the help guys.
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Old Nov 8, 2006 | 10:10 AM
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That's going to ruin the Corvette. IMO, big stupid cams and loud exhausts ruin the Y-body. I had a big cam and loud *** exhaust in my old C5, and I think it was the wrong "style" for a Vette if you get my drift. Granted, the cam-only put down 415 rwhp through a stock TB, LS6 intake, and no underdrive pulley and heads/cam put down 471 rwhp, but it would be like putting whorish clothes on a classy chick.

With that cam, you're going to make complete **** low-end and need at least a 4.10 gear.
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Old Nov 8, 2006 | 10:30 AM
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with a t rex you're going to beed 4.30s if you're 6 speed
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Old Nov 8, 2006 | 11:49 AM
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**** it. I am going to get the T-rex and run it with my stock gears. I have a ms3 now and it seems kinda mild to me. Thanks for the help though guys. The T-rex will make more power under the curve from what I have heard.
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Old Nov 8, 2006 | 11:57 AM
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Originally Posted by blackls6
**** it. I am going to get the T-rex and run it with my stock gears. I have a ms3 now and it seems kinda mild to me. Thanks for the help though guys. The T-rex will make more power under the curve from what I have heard.
There is quite a difference in the MS3 and T-Rex. The T-Rex can be plenty streetable if you want it to be. Its all in the tune. But i would defintely get a set of 3.90's to make up for the low end your going to lose.

The T-Rex on stock gearing would be fairly sluggish down low, but A properly tuned T-Rex + 3.90s on a 3200lb car will be xtremely fast.
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Old Nov 8, 2006 | 12:19 PM
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Originally Posted by Mcduffys
There is quite a difference in the MS3 and T-Rex. The T-Rex can be plenty streetable if you want it to be. Its all in the tune. But i would defintely get a set of 3.90's to make up for the low end your going to lose.

The T-Rex on stock gearing would be fairly sluggish down low, but A properly tuned T-Rex + 3.90s on a 3200lb car will be xtremely fast.
XXXtremely

Make sure they flycut your pistons though, otherwise your gonna be in a world of hurt, lol.
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Old Nov 8, 2006 | 12:23 PM
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Originally Posted by 2000 Tran Zam
XXXtremely

Make sure they flycut your pistons though, otherwise your gonna be in a world of hurt, lol.
On second thought, I would just make sure to check the piston to valve clearence just to be safe.
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Old Nov 8, 2006 | 12:25 PM
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Originally Posted by Kraest
That's going to ruin the Corvette. IMO, big stupid cams and loud exhausts ruin the Y-body. I had a big cam and loud *** exhaust in my old C5, and I think it was the wrong "style" for a Vette if you get my drift. Granted, the cam-only put down 415 rwhp through a stock TB, LS6 intake, and no underdrive pulley and heads/cam put down 471 rwhp, but it would be like putting whorish clothes on a classy chick.

With that cam, you're going to make complete **** low-end and need at least a 4.10 gear.
Whats wrong with running a big cam in a vette? Its equally as intimidating to have a loping vette as it is for an f body.

Whats the point of getting a vette if your gonna drive it like your having a mid life crisis?

Unless you prefer more tq down low, why not
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Old Nov 8, 2006 | 12:26 PM
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look man, i agree...the t rex can be streetable; it's all in the tune. but what was said above is also correct..it's going to be sluggish down low..especially w/ stock gears. hell mine was sluggish even w/ 4.10s. go the extra mile, put 4.30s in your vette and it will be one bad mother. there is a world of difference between the ms3 and t rex.
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