TFS street or track heat heads??

DemonGT · 08-15-2001, 12:47 AM

i already have a street intake but could upgrade the upper to a track heat if needed...the combo im looken at is TFS heads and stage one cam with a S trim...

should i go with the street heads and same intake or track heat heads and track heat upper?

P.S. looken for 11's/low 12's

------------------
'91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake

Waiting install:Nothing

Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's
ICQ#35670781

macx · 08-15-2001, 02:14 AM

One thing to consider - the freer flowing intake system, the less work the blower will have to push in the mixture - or - the more mixture the blower can push in for the same amount of effort. Only thing is, the big heads and intake will really weaken esp. the low and mid-range drivebility and throttle response of your 5.0 size motor until you add the blower, and then you'd want to size and drive the blower to start making some boost pretty quickly off idle or you'll still have a very mushy lower end. Talk to the blower mfg and see what they recommend for what you want to end up with. I understand the X cam works very well with a blower (that's what Coast often uses on quite hp blower motors)

macx · 08-15-2001, 02:16 AM

PS - I understand that the X cam works well with blowers because in addition to it's lift and duration, it has wide lobe centers which doesn't pass as much of the blower pressure thru on the relatively shorter overlap period. Maybe even check with Coast for your setup for a recommendation.

jonnyk · 08-15-2001, 05:12 PM

I thought the Track Heat heads just had higher lift springs on them versus the Streets. They don't flow any more air. And I think the Streets are good to .550" lift, which is more than plenty for the stage 1 cam. I would go with a Track Heat upper personally for use with a blower, but the Street Heat will produce a better bottom end as previously mentioned. If the car is mostly a street car then the Street intake might suit you better.

------------------
'91 LX Hatch, 17 ROH ZR6's, lowered, 3.73's, offroad H pipe, SN Cobra cat-back, ASP pullies, 14° timing, C&L 76mm MAF, 170A 3G, B&M Ripper on a T5
Best ET pass: 14.593 @ 94.62
Best MPH pass: 14.728 @ 95.72 (75°, 75% hum., 2200')
1991 LX Hatch 5.0L

DemonGT · 08-15-2001, 11:58 PM

hummm i see.......anyone have a mostly TFS combo with a S trim?? the car will be mostly street....

P.S. also looken for suggestions on suspention..already know im going with MM full length subs and nitto DR's need opinions on upper/lower control arms etc.

------------------
'91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake

Waiting install:Nothing

Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's
ICQ#35670781

Skyman · 08-16-2001, 02:34 PM

There is a guy that has set the record for the fastest stock blocked mustang.

It was ALL BOX STOCK PEICES.

TFS TW heads
E-303
Edelbrock intake

and a 18psi S-Trim with DFI.

3000lb race weight. It was dipping into the high 9's.

Skyler

------------------
-1989 Saleen Mustang #406-
TFS TW Heads, E-303, Edelbrock intake, 70mm TB, 73mm MAF, 24lb injectors, 1 5/8 shorties, Off Road H, 3 Chamber flows, Jaz Race seats, Back seat removed, sub-frames, Roll Cage, and a 80 shot of N20.
12.54@107.4 Motor
332RWHP, 350rwtq

DemonGT · 08-16-2001, 11:31 PM

what is DFI?

------------------
'91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake

Waiting install:Nothing

Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's
ICQ#35670781

jwboner · 08-17-2001, 12:13 AM

Digital Fuel Injection. You program the fuel maps and ignition maps on a laptop. MUCH more versatility and potential for power than stock computer.

------------------
65 fastback
347 DFI injected, TFS heads, T5, 4.11 9", tc subframe conns, torq thrust D's
A little history lesson using today's tech.

08-15-2001, 12:47 AM	#1
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	TFS street or track heat heads?? i already have a street intake but could upgrade the upper to a track heat if needed...the combo im looken at is TFS heads and stage one cam with a S trim... should i go with the street heads and same intake or track heat heads and track heat upper? P.S. looken for 11's/low 12's ------------------ '91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake Waiting install:Nothing Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's ICQ#35670781

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08-15-2001, 02:14 AM	#2
macx Registered Member Join Date: Oct 1999 Location: Gordonville MO USA Posts: 448	One thing to consider - the freer flowing intake system, the less work the blower will have to push in the mixture - or - the more mixture the blower can push in for the same amount of effort. Only thing is, the big heads and intake will really weaken esp. the low and mid-range drivebility and throttle response of your 5.0 size motor until you add the blower, and then you'd want to size and drive the blower to start making some boost pretty quickly off idle or you'll still have a very mushy lower end. Talk to the blower mfg and see what they recommend for what you want to end up with. I understand the X cam works very well with a blower (that's what Coast often uses on quite hp blower motors)

08-15-2001, 02:16 AM	#3
macx Registered Member Join Date: Oct 1999 Location: Gordonville MO USA Posts: 448	PS - I understand that the X cam works well with blowers because in addition to it's lift and duration, it has wide lobe centers which doesn't pass as much of the blower pressure thru on the relatively shorter overlap period. Maybe even check with Coast for your setup for a recommendation.

08-15-2001, 05:12 PM	#4
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	I thought the Track Heat heads just had higher lift springs on them versus the Streets. They don't flow any more air. And I think the Streets are good to .550" lift, which is more than plenty for the stage 1 cam. I would go with a Track Heat upper personally for use with a blower, but the Street Heat will produce a better bottom end as previously mentioned. If the car is mostly a street car then the Street intake might suit you better. ------------------ '91 LX Hatch, 17 ROH ZR6's, lowered, 3.73's, offroad H pipe, SN Cobra cat-back, ASP pullies, 14° timing, C&L 76mm MAF, 170A 3G, B&M Ripper on a T5 Best ET pass: 14.593 @ 94.62 Best MPH pass: 14.728 @ 95.72 (75°, 75% hum., 2200') 1991 LX Hatch 5.0L

08-15-2001, 11:58 PM	#5
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	hummm i see.......anyone have a mostly TFS combo with a S trim?? the car will be mostly street.... P.S. also looken for suggestions on suspention..already know im going with MM full length subs and nitto DR's need opinions on upper/lower control arms etc. ------------------ '91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake Waiting install:Nothing Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's ICQ#35670781

08-16-2001, 02:34 PM	#6
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	There is a guy that has set the record for the fastest stock blocked mustang. It was ALL BOX STOCK PEICES. TFS TW heads E-303 Edelbrock intake and a 18psi S-Trim with DFI. 3000lb race weight. It was dipping into the high 9's. Skyler ------------------ -1989 Saleen Mustang #406- TFS TW Heads, E-303, Edelbrock intake, 70mm TB, 73mm MAF, 24lb injectors, 1 5/8 shorties, Off Road H, 3 Chamber flows, Jaz Race seats, Back seat removed, sub-frames, Roll Cage, and a 80 shot of N20. 12.54@107.4 Motor *332RWHP, 350rwtq*

08-16-2001, 11:31 PM	#7
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	what is DFI? ------------------ '91 GT,91K,T-5,air silencer removed,HD clutch,K&N air filter,Mac long tubes,Cat-back,off road H,FMS 9mm wires,180 thermostat,Competition gauges,C&L 76mm MAF,Accufab 70mm TB,TFS street heat intake Waiting install:Nothing Future Mods:3.73's,Pro 5.0,TFS heads,TFS stage 1 cam,lakewood struts/shocks,nitto DR's ICQ#35670781

08-17-2001, 12:13 AM	#8
jwboner Registered Member Join Date: Jun 2001 Location: Under the hood Posts: 164	Digital Fuel Injection. You program the fuel maps and ignition maps on a laptop. MUCH more versatility and potential for power than stock computer. ------------------ 65 fastback 347 DFI injected, TFS heads, T5, 4.11 9", tc subframe conns, torq thrust D's A little history lesson using today's tech.