TFS 235 vs Brodix LS7 Results
10-18-2011, 09:46 AM
#42
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I have used both on the same engine.
I used TFS heads on my 440 in my RX7 and M3 for the mile
RX7= 196mph Na Texas mile
M3= 186 mph Na Mojave Mile
Nothing against LS7 heads I like them but my TFS heads make more TQ
On my turbo car I was using ported ls3 heads and they make very good power boosted. I am now using Mast ls3 heads on my turbo car.
I used TFS heads on my 440 in my RX7 and M3 for the mile
RX7= 196mph Na Texas mile
M3= 186 mph Na Mojave Mile
Nothing against LS7 heads I like them but my TFS heads make more TQ
On my turbo car I was using ported ls3 heads and they make very good power boosted. I am now using Mast ls3 heads on my turbo car.
Just want to make sure I'm reading this correctly.
10-18-2011, 01:46 PM
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You had the same engine in the RX7 with both the TFS and the LS7 heads. You didn't change anything other than the heads and the cam to match.
You took both heads to the track for testing with the only variable being the heads and the cam.
This correct?
If so, what was the et, mph, DA and raceweight of both heads from your testing?
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Stang2Goat (09-18-2023)
10-18-2011, 11:49 PM
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I tried 3 cams with the ls7 heads and made best of 554 rwhp and 495 rwtq.
best with tfs heads 570 rwhp and 530 rwtq.
My friend with his ls7 427 rx7 with ETP ls7 heads made 570 rwhp and 505 rwtq
On road race tires car went 10.8@135mph with ls7
and 10.5@140 with etp heads
This was all done a few years back and I know cams and ls7 porting has improved alot.
Right now I have the TFS heads on a 440 with much smaller cam making 564 rwhp and 532 rwtq in my 1995 BMW M3.
10-19-2011, 12:02 AM
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I found an old dyno run at K&N dyno room Made 510RWHP with small cam for contest. I later tried a few more cams
http://image.automotive.com/f/events...lenge+dyno.jpg
http://sportcompactcar.automotive.co...enge/dyno.html
http://image.automotive.com/f/events...lenge+dyno.jpg
http://sportcompactcar.automotive.co...enge/dyno.html
10-19-2011, 02:34 PM
#49
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I agree, Do not remember the name of the company that ported the heads, it was In LA.
I tried 3 cams with the ls7 heads and made best of 554 rwhp and 495 rwtq.
best with tfs heads 570 rwhp and 530 rwtq.
My friend with his ls7 427 rx7 with ETP ls7 heads made 570 rwhp and 505 rwtq
On road race tires car went 10.8@135mph with ls7
and 10.5@140 with etp heads
This was all done a few years back and I know cams and ls7 porting has improved alot.
Right now I have the TFS heads on a 440 with much smaller cam making 564 rwhp and 532 rwtq in my 1995 BMW M3.
I tried 3 cams with the ls7 heads and made best of 554 rwhp and 495 rwtq.
best with tfs heads 570 rwhp and 530 rwtq.
My friend with his ls7 427 rx7 with ETP ls7 heads made 570 rwhp and 505 rwtq
On road race tires car went 10.8@135mph with ls7
and 10.5@140 with etp heads
This was all done a few years back and I know cams and ls7 porting has improved alot.
Right now I have the TFS heads on a 440 with much smaller cam making 564 rwhp and 532 rwtq in my 1995 BMW M3.
Same with the track. There's no way to run a number at the track and then swap the heads/cam while at the track and run again the same day.
DA plays a huge role in track numbers. Even the dyno flucuates quite a bit based on air temps.
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Stang2Goat (09-18-2023)
10-21-2011, 08:15 PM
#55
I M O i think those people who put huge splits in ls7 headed cars
a-have poorly ported ls7 heads
b-get way to caught up in the "what everyone else is doing trend /game"
some of the hardest running ls7 headed engines ive seen ,had little to no split cams
theres alot going on and a total correctly designed package will make way more power, than crutching poor cyl heads with extra exh duration
that just costs power by introducing alot of other problems
a-have poorly ported ls7 heads
b-get way to caught up in the "what everyone else is doing trend /game"
some of the hardest running ls7 headed engines ive seen ,had little to no split cams
theres alot going on and a total correctly designed package will make way more power, than crutching poor cyl heads with extra exh duration
that just costs power by introducing alot of other problems
10-26-2011, 05:02 PM
#57
Since the ls3 head was brought up i had a cnc ls3 on my car and went to trickflow 235. I gained 10hp on top,20hp under the curve and 15 tq all over. Also,my compression was a little lower with the tfs head due to running a thicker gasket. Both heads were 62cc.
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Stang2Goat (09-18-2023)
