View Poll Results: which heads for 440ci stroker? touched up TFS 235cc heads or touched up GM LS7 heads?
hand touched up TFS 235cc heads.
68
51.13%
hand touched up GM LS7 heads.
65
48.87%
Voters: 133. You may not vote on this poll
which heads for 440ci stroker? TFS 235cc or GM LS7 heads?
11-01-2008, 07:45 AM
#1
which heads for 440ci stroker? TFS 235cc or GM LS7 heads? which heads shall i go with for a 440ci LS7 short block?
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
11-01-2008, 09:31 AM
#2
which heads shall i go with for a 440ci LS7 short block?
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
You are going to have a hard time getting that info on here....
11-01-2008, 04:22 PM
#5
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From my experience and setups, you would be ahead on power with a cnc ported ls7 head (like TSP's CNC LS7) with tit' intake valves etc on that setup with a ported ls7 intake.
A "touched up" ls7 head isnt going to be much better than the stock head so i would recommend the tfs heads over the stock-ish ls7 heads but not the cnc ls7's
A "touched up" ls7 head isnt going to be much better than the stock head so i would recommend the tfs heads over the stock-ish ls7 heads but not the cnc ls7's
11-01-2008, 04:54 PM
#6
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I am going with LS7 Ported Head's and LS7 ported Intake for my 438 build. I heard the same thing about the flow of a Ported Ls7 intake over the Fast 92. So that is why I have to sell my Fast 92 now
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11-01-2008, 06:30 PM
#8
which heads shall i go with for a 440ci LS7 short block?
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
hand touched up TFS 235cc heads with ported 92mm Fast intake manifold?
or
hand touched up GM LS7 heads with ported GM LS7 intake manifold?
note that i like small efficient ports that flow good over huge ports that flow high numbers. i like high port velocity much more than high flow numbers.
there is another point that gets me confused on which heads to go with that the LS7 intake manifold flows more than Fast 92mm intake manifold.
now let me know what experts say.
11-01-2008, 08:41 PM
#9
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I dont qualify as an expert, but I went with the trick flows. If you can match the cam to the heads either will make good power. The trick flows have a thicker deck if you decide you want to spray it.
11-02-2008, 12:35 AM
#12
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I went with the Trickflows 235cc on my Vengeance Racing 440 ls7 stroker.
I couldn`t be happier. My heavy car still makes ungodly torque.
I couldn`t be happier. My heavy car still makes ungodly torque.
Last edited by 2002gt; 11-02-2008 at 12:43 AM.
11-02-2008, 01:57 AM
#13
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i will put in my view-
i dont feel their is enough information given by the poster-
what u doing with it- street-weekend toy-track car-drag strip
it is possible to have the best of both worlds-but the 3rd thing usually suffers-
theirs heads and then their is technical heads which include parts to make them work-
i mean u could put some normal ls6 heads on it and watch it run out of puff asap-(example only-but u know what i mean)
so anything works-just need to know the use purpose-
i mean- the cam should be the second thing-u got the cubes worked out-then u get the cam then u match the heads and valvetrain-then bottom end and then u get power and torque?
thats me anyway-
Thanks-
i dont feel their is enough information given by the poster-
what u doing with it- street-weekend toy-track car-drag strip
it is possible to have the best of both worlds-but the 3rd thing usually suffers-
theirs heads and then their is technical heads which include parts to make them work-
i mean u could put some normal ls6 heads on it and watch it run out of puff asap-(example only-but u know what i mean)
so anything works-just need to know the use purpose-
i mean- the cam should be the second thing-u got the cubes worked out-then u get the cam then u match the heads and valvetrain-then bottom end and then u get power and torque?
thats me anyway-
Thanks-
11-02-2008, 01:37 PM
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11-02-2008, 02:57 PM
#16
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The 245 head will make no more power on a 4.125" bore than the 235 head, the 245 is setup for a larger 4.155"+ bore with a slightly larger valve that if you run a on 4.125" will not show any improvement over the 235cc.
Also if you go with the 245cc head you limit your use of the head on other motors later potentially, as the 235cc will fit on a 4" bore and increased resell value due to more peoples ability to use them.
11-02-2008, 03:32 PM
#17
There's a thread that shows the Trickflow 235s vs LS7s on a 440... one with a 262/270 duration cam (designed for the TFS heads) and the TFS 235s made a ton more torque everywhere and got close to the same peak.
When they tried the Stage 3 cam from Katech (made for the LS7), the TFS heads still made the same power and of course more torque.
If you want a street driven 440, the TFS 235s work very well.
When they tried the Stage 3 cam from Katech (made for the LS7), the TFS heads still made the same power and of course more torque.
If you want a street driven 440, the TFS 235s work very well.
11-02-2008, 04:45 PM
#18
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The 245 head will make no more power on a 4.125" bore than the 235 head, the 245 is setup for a larger 4.155"+ bore with a slightly larger valve that if you run a on 4.125" will not show any improvement over the 235cc.
Also if you go with the 245cc head you limit your use of the head on other motors later potentially, as the 235cc will fit on a 4" bore and increased resell value due to more peoples ability to use them.
Also if you go with the 245cc head you limit your use of the head on other motors later potentially, as the 235cc will fit on a 4" bore and increased resell value due to more peoples ability to use them.
Their's people out their running 265cc on 4.125 bore-maybe they should chime in on some stats
Thanksp
11-02-2008, 05:14 PM
#19
A 440 is a 4.187 bore and a 4 inch stroke. Total Engine Airflow Makes the Trickflow 245cc heads and those are exactly what I'd run give the two options.
http://www.totalengineairflow.com/pr...gmhead/tfsls1/
http://www.totalengineairflow.com/pr...gmhead/tfsls1/
11-02-2008, 05:28 PM
#20
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A 440 is a 4.187 bore and a 4 inch stroke. Total Engine Airflow Makes the Trickflow 245cc heads and those are exactly what I'd run give the two options.
http://www.totalengineairflow.com/pr...gmhead/tfsls1/
http://www.totalengineairflow.com/pr...gmhead/tfsls1/
talk to Ron @ Vengeance, they prefer the trickflow's over ls7's and have proven to make more power with them.
Chad