Thunderchicken w/ Advanced Induction 21deg CNC'd TFS Heads & HR Dyno Results
#42
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I edited it just for you.
#43
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I haven't made any concrete plans on what I want to do. I want to get a 10 second slip out of what I have and think it's a possibility on the right day. Car needs a paint job as well. I've always intended to put the bottle on this motor. Maybe that's next... I dunno...
#44
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Thought you guys might like this. I was sorting through some of the results guys have emailed in and realized that I never posted this up.
It is a 397cid LT1
Ai CNC'd 21deg TFS Heads
Ai Hydraulic Roller Camshaft
Ai Street/Strip Ported GM LT1 Manifold
M6, 12-bolt, 4.11's
12:1 on 92/93 Octane
The car previously had another brand ported LT head, LT manifold, and HR cam & with the old setup put down 433rwhp. The new top-end put up gained from all the way down at 2500rpm when the pulls started (it was up 40-50lb/ft at ~2700).
V8Muscle has a run down on the car specs prior to the top-end swap here
![](http://www.advancedinduction.com/Dyno/AF-Thunderchicken-Ai212cc21degTFSHRDyno.jpg)
Worth noting, the roughness of the graph is due to not applying dynojet's curve smoothing. Most of the graphs presented online are shown w/ max smoothing applied to make them more presentable.
Hope you guys like it!
-Phil
It is a 397cid LT1
Ai CNC'd 21deg TFS Heads
Ai Hydraulic Roller Camshaft
Ai Street/Strip Ported GM LT1 Manifold
M6, 12-bolt, 4.11's
12:1 on 92/93 Octane
The car previously had another brand ported LT head, LT manifold, and HR cam & with the old setup put down 433rwhp. The new top-end put up gained from all the way down at 2500rpm when the pulls started (it was up 40-50lb/ft at ~2700).
V8Muscle has a run down on the car specs prior to the top-end swap here
![](http://www.advancedinduction.com/Dyno/AF-Thunderchicken-Ai212cc21degTFSHRDyno.jpg)
Worth noting, the roughness of the graph is due to not applying dynojet's curve smoothing. Most of the graphs presented online are shown w/ max smoothing applied to make them more presentable.
Hope you guys like it!
-Phil
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#46
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i remember that from 2010 lol
heres a video of the car incar from the 10 shootout.....i remembered racing im and sure enough i was in the video....
http://www.youtube.com/watch?v=hoD1C...ure=plpp_video
heres a video of the car incar from the 10 shootout.....i remembered racing im and sure enough i was in the video....
http://www.youtube.com/watch?v=hoD1C...ure=plpp_video
#47
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i remember that from 2010 lol
heres a video of the car incar from the 10 shootout.....i remembered racing im and sure enough i was in the video....
http://www.youtube.com/watch?v=hoD1C...ure=plpp_video
heres a video of the car incar from the 10 shootout.....i remembered racing im and sure enough i was in the video....
http://www.youtube.com/watch?v=hoD1C...ure=plpp_video
![Angel](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_angel.gif)
I wonder where Alan has been hiding ? doesn't he check the forums anymore I'm hoping he did all this work to come back to the shootout we missed him last year.
Last edited by BADHAWK51; 01-30-2012 at 05:30 PM.
#49
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Nice numbers! I plan on building a similar setup, 396 with AI 21* Heads, cam, and ported intake combo, but with 14-14.5 CR and E85. This gives me a great idea what to look forward to!
#50
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As rarely as it happens, I agree with SSRRR that the LPE heads would have done better without a nitrous grind in there. 236/248 on a 110 is going to be lazy on 396 cubes with an LTx manifold. Yes the H/C package made impressive gains, but I'm sure that stock casting LPE head could have made 450+ with a properly packaged camshaft. To say a 236/248 XE grind is as close to optimal as your camshaft doesn't inspire much confidence ![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Did your heads do great? YES! But lets not disguise the previous combination as "thoroughly developed" and imply your heads will bolt on 40-45 rwhp with no changes. As for a question... what's the Min CSA on the 21* head?
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Did your heads do great? YES! But lets not disguise the previous combination as "thoroughly developed" and imply your heads will bolt on 40-45 rwhp with no changes. As for a question... what's the Min CSA on the 21* head?
![Icon Lol](https://ls1tech.com/forums/images/smilies2/icon_lol.gif)
I don't have to imply my cylinder head alone will put up huge gains over many others - it has been repeatedly proven over the years.
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No.
I had considered a budget cnc work deal to port the version of the head that TFS sells, but don't care to put my $ into it. If 6 or 8 guys got together and sent in a $500-1k deposit I'd take the time to develop a program for them. It'd likely end up at $1k or so total for labor.
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Some people call them nasty, some people call them stupid. When talking about street cars, it is hilarious what guys try to do.
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#51
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Like I said, it doesn't really matter since you provided a bolt-on PACKAGE that eliminates the trial and error, and the proof is right there that it works as a whole...I just feel you are selling yourself short on the benefits of a modern, properly specced camshaft.
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I know of 4 on this board that post pretty regularly right off the top of my head. There are plenty of LT1's running around who don't post on forums we never hear about as well with Tax season coming around I'm sure there might be people who are running them as cast who would love to get them ported but if there is no money to be made like the AI rep said no reason to develop the program.
This is more than likely the route I will go down the road and with awesome results like AI always puts out seems like the way to go
This is more than likely the route I will go down the road and with awesome results like AI always puts out seems like the way to go
#56
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Are the stock piston valve reliefs enough to clear the valves with these heads? Probably wouldn't gain much with this swap anyway. Maybe 5hp.
Last edited by Rob94hawk; 02-05-2012 at 12:52 AM.
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man have i been asleep or something to miss all this fun?
I've got a lot going on but will say that there was a dyno pull after that one that did make 504rwhp. The stuff works.
Thanks for all the compliments. Car does have quite a history.
The only detail i will leave you is this setup ran 11.17 with some real issues. That is what i'm working on now.
I've got a lot going on but will say that there was a dyno pull after that one that did make 504rwhp. The stuff works.
Thanks for all the compliments. Car does have quite a history.
The only detail i will leave you is this setup ran 11.17 with some real issues. That is what i'm working on now.