402 buildup for my cts-v
Yea this site fooled me into that way of thinking over the summer. Don't get me wrong, the LS3 heads make good power for 700$ but I can't wait to get my hands on a set of AFR 230's or TFS 235's.. Can't decide.
Haha yea there are both crowds out there. Just saying for my application, and for a daily driven truck, the cathedral ports are a better match imo. This thread isn't for this discussion.
I'm just wondering if the OP likes the feel of the cathedrals through the whole rpm range better than the LS3s.
I'm just wondering if the OP likes the feel of the cathedrals through the whole rpm range better than the LS3s.
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No worries Kevin, you know I'm your biggest fan! You inspired me to do the WCCH LS3/L92 thing years ago. I was awarded with 1300hp and 8 second timeslips on factory castings broke new ground for us. Also showed their weakness with thin decks and a broken heart with lifted heads every time the boost was nudged past 14 psi. 
These particular TEA stage 2 LS3 heads would be great on a bigger cubed combo. You are talking about 280cc intake runners!
I definitely have improved seat of the pants up top. Dont feel like I gave up anything anywhere. I will post up overlay graphs on Monday so we can see the difference on paper. I was in such a hurry on Friday to drive the thing, I didin't even look much at the dyno.
Traction with the 275 Invo's is quite limited through third gear.
These particular TEA stage 2 LS3 heads would be great on a bigger cubed combo. You are talking about 280cc intake runners!
I definitely have improved seat of the pants up top. Dont feel like I gave up anything anywhere. I will post up overlay graphs on Monday so we can see the difference on paper. I was in such a hurry on Friday to drive the thing, I didin't even look much at the dyno.
Traction with the 275 Invo's is quite limited through third gear.
No worries Kevin, you know I'm your biggest fan! You inspired me to do the WCCH LS3/L92 thing years ago. I was awarded with 1300hp and 8 second timeslips on factory castings broke new ground for us. Also showed their weakness with thin decks and a broken heart with lifted heads every time the boost was nudged past 14 psi.
These particular TEA stage 2 LS3 heads would be great on a bigger cubed combo. You are talking about 280cc intake runners!
I definitely have improved seat of the pants up top. Dont feel like I gave up anything anywhere. I will post up overlay graphs on Monday so we can see the difference on paper. I was in such a hurry on Friday to drive the thing, I didin't even look much at the dyno.
Traction with the 275 Invo's is quite limited through third gear.
These particular TEA stage 2 LS3 heads would be great on a bigger cubed combo. You are talking about 280cc intake runners!
I definitely have improved seat of the pants up top. Dont feel like I gave up anything anywhere. I will post up overlay graphs on Monday so we can see the difference on paper. I was in such a hurry on Friday to drive the thing, I didin't even look much at the dyno.
Traction with the 275 Invo's is quite limited through third gear.
1300HP with the turbo build is sick. Not really surprised you pushed water at that boost with a lot of RPM.
The CTS is going to have a lot of people looking around at stop lights trying to figure out where that noise is coming from...
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Verdad Gallardo It's all good. It just gets old hearing people spout "facts" who don't know WTF they're talking about.
1300HP with the turbo build is sick. Not really surprised you pushed water at that boost with a lot of RPM.
The CTS is going to have a lot of people looking around at stop lights trying to figure out where that noise is coming from...
1300HP with the turbo build is sick. Not really surprised you pushed water at that boost with a lot of RPM.
The CTS is going to have a lot of people looking around at stop lights trying to figure out where that noise is coming from...
If these heads are all that ,hen where's the proof in the puddin?
Can't pin the gain on the cathedrals vs square port. not when you change cam, heads, intake, CAI, etc. I don't know, but I'm going to go out on a limb and ASSume the new cam is quite a bit bigger.
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The new cam is bigger, but I firmly believe, if sticking with my old top end and putting in a bigger cam, would have netted maybe 10hp up top.
Overall I am happy with the experiment, and am enjoying the new increase in power.
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Thats funny, all y'all guys at the shop have been in my car before me. What did you change on the top end? I know if its crazier than before, that thing has to be in beast mode!