TFS 235cc vs Stage 3 LS6 on stroker graph inside
TFS 235cc vs Stage 3 LS6 on stroker graph inside This is a 13.1 comp stage 3 LS6 head vs 11.8 comp TFS 235cc head on a 414 stroker motor compare graphs. All I did was head swap and ported the FAST. Cam is a RPM 6 244/248...612/615..112LSA. Run 125 is final #, Run 58 is LS6 with timing and run 75 is with LS6 but had to take timing out due to det. Run 120 and 122 were final but RPM got more today.The most my car made with LS6 was 537rwhp and 490rwtq but the graph is choppy from 3500 to 5000 rpm's. If you notice we only pulled run125 up to 6000rpm and 120 and 122 to 6400-6500rpm that is because it flattens from 6000 to 6500 rpm and does not drop so I shift at 6200rpm. So what do yall think? Final #'s 545rwhp 506rwtq. As for the spike at the end the run we did after this run we took it to 6500rpm and made 543rwhp 508rwtq with out the spike,
Last edited by jeremym; Aug 24, 2007 at 12:05 AM.
So the rumors about the motor being freshened up at the latest round are not true then correct? Just want to make sure that everyone knows the full truth here whatever it may be. Still seems to me there is a restriction somewhere if you are only pulling 6500 RPMs. What springs are on it? Why have a stroker motor and not turn it more then stock cubic inches turn? Take advantage of the bore and put another 1000 rpms with it and a better cam. A reverse grind would be sweet in that setup since you cant catch enough air into it without going with an exotic intake setup. Take the exhaust duration down some and pick up the intake side, grind it on a XFI lobe and cut it on a 113 straight up and degree the cam for best power curves. no advance ground in to it. Restrictions on intake or exhaust limit your RPMs like a rev limiter. I know the car has duals on it and a decent header now so it aint the exhaust side of things.
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I'm no head porting genius by any means but its my understanding the 235 Trickflow heads were made to shine with a minimal 4.125 bore found in 427 cubic inch and larger LS Motors. What is the bore size of this 414 motor (I would imagine less than 4.125)?. Also, the bump up in compression to 13:1 to 1 is a significant difference vs. the 11:8 to 1 compression set-up with the TFS 235 heads so I would not think that we are not comparing apples to apples to here!
Originally Posted by Chicago Crew UnderBoss
I'm no head porting genius by any means but its my understanding the 235 Trickflow heads were made to shine with a minimal 4.125 bore found in 427 cubic inch and larger LS Motors. What is the bore size of this 414 motor (I would imagine less than 4.125)?. Also, the bump up in compression to 13:1 to 1 is a significant difference vs. the 11:8 to 1 compression set-up with the TFS 235 heads so I would not think that we are not comparing apples to apples to here!
Originally Posted by WOTFMAN
So the rumors about the motor being freshened up at the latest round are not true then correct? Just want to make sure that everyone knows the full truth here whatever it may be. Still seems to me there is a restriction somewhere if you are only pulling 6500 RPMs. What springs are on it? Why have a stroker motor and not turn it more then stock cubic inches turn? Take advantage of the bore and put another 1000 rpms with it and a better cam. A reverse grind would be sweet in that setup since you cant catch enough air into it without going with an exotic intake setup. Take the exhaust duration down some and pick up the intake side, grind it on a XFI lobe and cut it on a 113 straight up and degree the cam for best power curves. no advance ground in to it. Restrictions on intake or exhaust limit your RPMs like a rev limiter. I know the car has duals on it and a decent header now so it aint the exhaust side of things.
Originally Posted by Full-Force
comparison is worthless 
Marty
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Originally Posted by jeremym
I picked up a lot under the curve with the TFS. Compare both set up when they both made 530 I still picked up 30+rwhp thru the whole curve
What is the bore size on this 414 LS motor?
Originally Posted by Chicago Crew UnderBoss
With running less compression with the TFS 235s and making this sig. extra HP under the curve shows the Trick Flow heads kick some serious *** (which we already knew but great to reinforce, etc.).
What is the bore size on this 414 LS motor?
What is the bore size on this 414 LS motor?
Unless it's the same in every aspect it's not a Apples for Apples test. Sure, it looks like you have a winner but you even said that you ported the intake too...
In back to back testing I like to see "everything" remain the same except for the "one" part you are comparing and testing... Multiple changes or unequal specs. throws off the data... That can not be denied. Again, it "looks" promising and thanks for sharing the data, but it's not a true comparison... Sorry.
In back to back testing I like to see "everything" remain the same except for the "one" part you are comparing and testing... Multiple changes or unequal specs. throws off the data... That can not be denied. Again, it "looks" promising and thanks for sharing the data, but it's not a true comparison... Sorry.
You guys need to look at what he has now. Nobody said he was trying to compare apples to apples. Who gives a **** , he has a motor w/ less compression making more power. He can ride around on pump gas and still kick the old set up's ***. Thats all i need to see and I say congrats and it makes me want the TFS head even more now. On a side note, i would like to see what kind of power that head would make at 13.1 also but thats not the direction he wanted to go. Good luck with your new power. :-)
That's excellent power under the curve in what appears to be a very streetable package. I'd like to see the pulls to 7000rpm as your dyno pulls are ending at peak power. How your motor pulls past peak is very important to know.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by Patrick G
That's excellent power under the curve in what appears to be a very streetable package. I'd like to see the pulls to 7000rpm as your dyno pulls are ending at peak power. How your motor pulls past peak is very important to know.
Originally Posted by LSmonster
Unless it's the same in every aspect it's not a Apples for Apples test. Sure, it looks like you have a winner but you even said that you ported the intake too...
In back to back testing I like to see "everything" remain the same except for the "one" part you are comparing and testing... Multiple changes or unequal specs. throws off the data... That can not be denied. Again, it "looks" promising and thanks for sharing the data, but it's not a true comparison... Sorry.
In back to back testing I like to see "everything" remain the same except for the "one" part you are comparing and testing... Multiple changes or unequal specs. throws off the data... That can not be denied. Again, it "looks" promising and thanks for sharing the data, but it's not a true comparison... Sorry.
I want to see him pull it to 7500... he has the valvetrain to support the RPM... on the ported fast dyno.... it wasnt falling over... why stop less than 6500??? Pull that bitch harder... i am sure you have more power in more rpm? 
Originally Posted by jeremym
Ok. The dyno graph making 532rwhp is without the ported intake. So now compare. Heads vs heads I still picked good power
Yes you did. I believe I said it looked good and I even thanked you for posting the data. Hell, you "probably" would have a bigger spread between the two heads with the compression was at 13:1 for both... BUT that too is only speculation. But with that said, the TFS heads look great on paper and in the real world as this test shows... Congrats! But quite frankly, I would have been shocked if that head didn't out perform a ported factory head... Don't you agree?
And just so you know I'm not a TFS basher, I just got a set of these heads and will be doing some testing of my own. And yes, I expect good things from these heads.