408 stroker heads

saldoggs · April 17th, 2008, 11:06 PM

i have a question a friend of mine has a set of trick flow twisted wedge heads with 63 cc combustion cambers they are on a 302 and it makes real good power now he wants to buy a stroker 408 and they guy at the machine shop said that the heads will not flow enogh to support the engine and he should buy a set of afr 205 or 225 heads what do you guy think does he need new heads or will the trick flow work well with the 408

nightrunner · April 17th, 2008, 11:11 PM

+1 for machine shop guy

Iwannagofast · April 17th, 2008, 11:22 PM

what size intake runner on the trickflows

e3sean · April 17th, 2008, 11:38 PM

get a set of BRODIX

ryans88gt · April 17th, 2008, 11:42 PM

They will work, but they will give up a lot on the top end. A good CNC port job might get them to where they need to be, but I would agree that the AFR 225s would be a better choice.

Goblin · April 17th, 2008, 11:43 PM

I would sell the TFS heads, and go for a set of AFR 205s or 225s.

1slo5.0 · April 18th, 2008, 12:35 AM

The machine shop guy is correct. Too small. If he is going to run that head he might as well build a smaller engine. At minimum he should run a Trick Flow R-series 206cc head or an AFR 205cc head.

Gregg@TrickFlow · April 18th, 2008, 05:28 PM

Originally Posted by saldoggs

i have a question a friend of mine has a set of trick flow twisted wedge heads with 63 cc combustion cambers they are on a 302 and it makes real good power now he wants to buy a stroker 408 and they guy at the machine shop said that the heads will not flow enogh to support the engine and he should buy a set of afr 205 or 225 heads what do you guy think does he need new heads or will the trick flow work well with the 408

Naturally aspirated I would go with the 206 TW-R series head. Blower/Turbo or a nitrous application I would use the 225 TW-R head.

ryans88gt · April 18th, 2008, 08:56 PM

Why would you recommend a larger intake runner for nitrous? The intake runner has no effect how a motor performs on vs. off nitrous.

saldoggs · April 19th, 2008, 09:42 AM

thanks for the info guys another ques. would those heads (trick flow) work on my 351 or are they too small also because if he is gonna sell them them i would like to buy them now i only have gt 40 heads but if i am gonna buy a set of heads then i want them most out of them

1slo5.0 · April 20th, 2008, 11:38 AM

Originally Posted by ryans88gt

Why would you recommend a larger intake runner for nitrous? The intake runner has no effect how a motor performs on vs. off nitrous.

Yes the intake runner does have an effect with a nitrous motor. You can only pack so much into a runner. With a small tune up it probably won't make much of a difference but on a serious nitrous motor runner size will matter.

1slo5.0 · April 20th, 2008, 11:40 AM

Originally Posted by saldoggs

thanks for the info guys another ques. would those heads (trick flow) work on my 351 or are they too small also because if he is gonna sell them them i would like to buy them now i only have gt 40 heads but if i am gonna buy a set of heads then i want them most out of them

They will work on a 351.

vfast · April 20th, 2008, 02:48 PM

I'm glad you weren't the machanist*L*

Originally Posted by ryans88gt

Why would you recommend a larger intake runner for nitrous? The intake runner has no effect how a motor performs on vs. off nitrous.

ryans88gt · April 20th, 2008, 03:51 PM

I'm glad your a moron too

ryans88gt · April 20th, 2008, 03:56 PM

Originally Posted by Darrell

Yes the intake runner does have an effect with a nitrous motor. You can only pack so much into a runner. With a small tune up it probably won't make much of a difference but on a serious nitrous motor runner size will matter.

Really? Show me a comparison of a how much power a 300 shot is good for on AFR165s vs. AFR225s. Yeah the 225s will make more power, but the I'll guarantee you that the 300 shot results in a larger change on the 165s. You'd need to be running more than 300 hp shot of N2O before you see restriction from a TW head.

1slo5.0 · April 20th, 2008, 10:06 PM

Originally Posted by ryans88gt

Really? Show me a comparison of a how much power a 300 shot is good for on AFR165s vs. AFR225s. Yeah the 225s will make more power, but the I'll guarantee you that the 300 shot results in a larger change on the 165s. You'd need to be running more than 300 hp shot of N2O before you see restriction from a TW head.

Show me a comparison that shows a bigger runner doesn't make a difference... Its basic Internal Combustion Engine 101.

I'll just leave it at that. I haven't made the accomplishments I've made by being stupid.

nba1341 · April 20th, 2008, 10:07 PM

werent darrell and ryan fighting once over knowledge?

do i see it happening again

1slo5.0 · April 20th, 2008, 10:10 PM

Originally Posted by nba1341

werent darrell and ryan fighting once over knowledge?

do i see it happening again

I'm not fighting over anything. I have a long track record that backs me up.

ryans88gt · April 20th, 2008, 10:50 PM

Originally Posted by Darrell

Show me a comparison that shows a bigger runner doesn't make a difference... Its basic Internal Combustion Engine 101.

I'll just leave it at that. I haven't made the accomplishments I've made by being stupid.

Yeah the bigger runner makes more power, but that is because it makes more power NA, it will not make a greater percentage improvement using the same amount of nitrous unless you are using a huge amount of nitrous like IDK 3lbs per 10 seconds (500 shot).

Basically the amount of nitrous compared to the amount of air going in is only a small fraction.

qwkvert · April 21st, 2008, 12:20 PM

eff it. race and the winner is right.... I got my money on darrel..any takers?

April 17th, 2008, 11:06 PM	#1
saldoggs Regular 1993 mustang lx convertib Join Date: Jan 2008 Location: staten island nyc Posts: 146 iTrader: 0 reviews	408 stroker heads i have a question a friend of mine has a set of trick flow twisted wedge heads with 63 cc combustion cambers they are on a 302 and it makes real good power now he wants to buy a stroker 408 and they guy at the machine shop said that the heads will not flow enogh to support the engine and he should buy a set of afr 205 or 225 heads what do you guy think does he need new heads or will the trick flow work well with the 408

April 17th, 2008, 11:11 PM	#2
nightrunner Regular Join Date: Apr 2007 Location: Bryans Road MD Posts: 56 iTrader: 0 reviews	+1 for machine shop guy __________________ scotty 1990 GT 347 1.417 60ft 1/8 6.801@98.05 1/4 10.92@117.85 1 day it will be fast !!! unitll then I'll pretend.

April 17th, 2008, 11:38 PM	#4
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,596 iTrader: 0 reviews	get a set of BRODIX __________________

April 17th, 2008, 11:42 PM	#5
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	They will work, but they will give up a lot on the top end. A good CNC port job might get them to where they need to be, but I would agree that the AFR 225s would be a better choice. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

April 17th, 2008, 11:43 PM	#6
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	I would sell the TFS heads, and go for a set of AFR 205s or 225s. __________________

April 18th, 2008, 12:35 AM	#7
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	The machine shop guy is correct. Too small. If he is going to run that head he might as well build a smaller engine. At minimum he should run a Trick Flow R-series 206cc head or an AFR 205cc head. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

April 18th, 2008, 08:56 PM	#9
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	Why would you recommend a larger intake runner for nitrous? The intake runner has no effect how a motor performs on vs. off nitrous. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

April 19th, 2008, 09:42 AM	#10
saldoggs Regular 1993 mustang lx convertib Join Date: Jan 2008 Location: staten island nyc Posts: 146 iTrader: 0 reviews	thanks for the info guys another ques. would those heads (trick flow) work on my 351 or are they too small also because if he is gonna sell them them i would like to buy them now i only have gt 40 heads but if i am gonna buy a set of heads then i want them most out of them

April 20th, 2008, 03:51 PM	#14
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	I'm glad your a moron too __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

April 20th, 2008, 10:07 PM	#17
nba1341 Banned 1965 Mustang Fastback Join Date: Apr 2007 Location: Los Angeles, Cal Posts: 24,982 Posts: 2,197 iTrader: 0 reviews	werent darrell and ryan fighting once over knowledge? do i see it happening again __________________ I'm a good boy now. [COLOR=red][B]slow car club - crew member 7 of 9 [COLOR=White]Mood: Cool :cool: [/COLOR][/B] [/COLOR]

April 21st, 2008, 12:20 PM	#20
qwkvert Regular 1989 lx convertible 10.87 @ 128 ( old 302 combo) Join Date: Jan 2008 Location: Mt Juliet,TN Posts: 277 iTrader: 1 reviews	eff it. race and the winner is right.... I got my money on darrel..any takers?

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