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New Trickflow's and torque is weak.

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Old Aug 5, 2009 | 06:27 PM
  #21  
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see that dip you have around 4K rpm, that is partly exhaust related.

Last edited by PREDATOR-Z; Aug 5, 2009 at 06:57 PM.
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Old Aug 5, 2009 | 06:54 PM
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Interesting. Thanks for that because no one has really been able to give me an explanation for the dip. So open up the exhaust a bit and see how it does? I will look into that!
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Old Aug 5, 2009 | 07:00 PM
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Well it is 2 things from what I have experienced:
Exhaust cam spec and exhaust setup. (that includes primary length with regard to cam specs)
And tuning as well for setup at hand.
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Old Aug 5, 2009 | 07:15 PM
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what rpm did it run to? looks as if it hadnt even peaked yet...got a graph in engine RPM?
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Old Aug 5, 2009 | 07:26 PM
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No that's the only one I have and before I left I didn't get a nicer copy. That graph is taking it to around 6500, I should have mentioned that so thanks for bringing that up.
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Old Aug 5, 2009 | 07:30 PM
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I run the TFS heads as well...i had a 236 238 XER cam in it with LG pro no cats...had 417 tq....changed to a 235 243 LSL cam with ARH 1 7/8 headers no cats a a 390 diff and went down to 405 rwtq....who would have thought

btw my TFS heads are 61cc MLS GM gaskets
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Old Aug 5, 2009 | 07:39 PM
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hmm a cam of that size should pull well to 7k...if you get in on the dyno again see what she does up that high

btw my cam is on a 108ICL and lost everywhere compared to the old cam on a 111ICL old headers and stock diff same dyno...
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Old Aug 6, 2009 | 05:23 AM
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Originally Posted by Kurtomac
I run the TFS heads as well...i had a 236 238 XER cam in it with LG pro no cats...had 417 tq....changed to a 235 243 LSL cam with ARH 1 7/8 headers no cats a a 390 diff and went down to 405 rwtq....who would have thought

btw my TFS heads are 61cc MLS GM gaskets
Well, maybe I am not too far off of where I should be with this thing? I may have to just accept it and drive it. I really don't want to mess with it again. My wallet needs some time to rest
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Old Aug 6, 2009 | 08:35 AM
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Nevermind the dyno.. How's the sotp?
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Old Aug 6, 2009 | 09:12 AM
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[QUOTE=Kurtomac;12025229]I run the TFS heads as well...i had a 236 238 XER cam in it with LG pro no cats...had 417 tq....changed to a 235 243 LSL cam with ARH 1 7/8 headers no cats a a 390 diff and went down to 405 rwtq....who would have thought

btw my TFS heads are 61cc MLS GM gaskets[/QUOTE

Seems like your 3.90 gears ate up a good 20 or so rwtq. Oh well its just a number. As far as numbers go, your track times more then verify your cars power.
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Old Aug 6, 2009 | 10:12 AM
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Have you checked your pushrod length?

My dyno graph looks similar (flattens out at 6000rpm when it should pull to 6500). Damian suggested that I had the incorrect pushrods. I was using 7.500", and turns out I should have 7.400".

Here is my graph:

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Old Aug 6, 2009 | 10:42 AM
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Leave the freakin cats. Decent cats aren't going to kill performance at this level of performance. All that will do is **** off anyone that would have the misfortune of driving behind him. You guys need to have some respect for other drivers on the road.
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Old Aug 6, 2009 | 12:36 PM
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^^^^^^
This is the same guy that is advertising SUBWOOFERS for sail panels!
You should have some respect for others next to you at a light

Anyways to the OP, I understand your wallet situation. But when you get a chance cut the cats off and enjoy a little more TQ, I dont have cats, Im on the 10 bolt, M6, 3:42's, MLS gaskets, But I have the AS-cast version TF's so I dont think your that far off IMHO all of this on a mustang dyno too.

Last edited by litle88; Aug 6, 2009 at 12:44 PM.
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Old Aug 6, 2009 | 12:50 PM
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^^^^^^^^^^^ LOL ^^^^^^^^^^^^^^^^^

My neighbors love my cutouts. They said I don't wake them up anymore leaving for work or coming home late at night. LOL
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Old Aug 6, 2009 | 12:52 PM
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I don't advertise subwoofers for sail panels. I suggest a real subwoofer instead.
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Old Aug 6, 2009 | 01:35 PM
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I was only able to find this overlay of my
hotcam only set up and my current set up.
I know it looks like it has a little more in it but that was spinning it to 6500, Mike at Straightline wanted really bad for me to go to 7k just to see, but im a Pu#$y cause I have a stock bottom end

My graph also looks similar to yours.

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Old Aug 6, 2009 | 05:00 PM
  #37  
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Originally Posted by mello03
Guys I need some opinions on where or what to do from here. Story is this,

03 Z06 with
236/240 .601 .608 112 lsa
Ported Fast 92 from Vengeance
1 3/4 American Racing headers with high flow cats
Borla Stingers
Blackwing
Trickflow 215's milled to 59cc
Yella Terras
Nick Williams 92 mm TB

Cam only the car made 427/393

After the heads, ported fast, and TB the car made 478/409

Why no torque? I would have expected much more torque than this. Is the cam the issue? My goal was about about 475/435 so I am pretty disappointed in the low torque numbers. Any suggestions? The shop is scratching their heads a bit on this one so in the meantime I wanted to get some other opinions.


Thats the lowest torque output ive ever seen from TFS 215s
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Old Aug 6, 2009 | 05:11 PM
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I would leave your cats. I dont think it would help much if any. I would love to see the difference, because I think the lack of back pressure might hurt.
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Old Aug 6, 2009 | 05:21 PM
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Originally Posted by SLOC5LS6
Thats the lowest torque output ive ever seen from TFS 215s
I think I own that title. 388rwtq
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Old Aug 6, 2009 | 05:22 PM
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Originally Posted by SLOC5LS6
Thats the lowest torque output ive ever seen from TFS 215s
Thank you. I am glad to be the record holder of that category.
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