TW 170 or AFR 165 on Stock Bottom End w/ TFS Stage 2 Cam

fogged306 · May 7th, 2011, 07:21 AM

Originally Posted by FastStang91Lx

From what I always read from the benchflow people on here is that the AFR 185's outflow the mid range, but the tf170's had more cfm in the higher lift. Or was it vice versa? Either way, both are comparable heads with one being an inline. As far as the CNC'ing on the AFR's, it's available in two versions. One more rough, and one more smooth, from what I remember from back in the day.

I think it's the other way around. Every chart I've seen has the AFR's flowing very well up top. Problem is, I've never seen a AFR flowed on a 4" or 4.030" bore. It's always on a 4.125" bore where valve shrouding isn't an issue.

FastStang91Lx · May 8th, 2011, 01:14 AM

Originally Posted by fogged306

I think it's the other way around. Every chart I've seen has the AFR's flowing very well up top. Problem is, I've never seen a AFR flowed on a 4" or 4.030" bore. It's always on a 4.125" bore where valve shrouding isn't an issue.

Hmmmm..... sounds like fudging numbers to me.

dennislv · May 8th, 2011, 03:05 AM

Is this setup (tw170s, tf stage 2 cam & tf intake) safe for say a 100 shot on the stock bottom end? What would be a safe amount? Thanks...

fogged306 · May 8th, 2011, 08:58 AM

Originally Posted by FastStang91Lx

Hmmmm..... sounds like fudging numbers to me.

Yep. They like to hide the fact that their inline head shrouds the valve on the stock bore engines. Lots of people mislead by that garbage. Still a good head, but not as great as they make it sound on a 4" or 4.030" bore.

69fastback · May 8th, 2011, 09:20 AM

Originally Posted by dennislv

Is this setup (tw170s, tf stage 2 cam & tf intake) safe for say a 100 shot on the stock bottom end? What would be a safe amount? Thanks...

100 shot would be fairly safe, with a good tune.

Originally Posted by fogged306

Yep. They like to hide the fact that their inline head shrouds the valve on the stock bore engines. Lots of people mislead by that garbage. Still a good head, but not as great as they make it sound on a 4" or 4.030" bore.

Fo sho

dennislv · May 8th, 2011, 12:33 PM

So with my setup, would a TW185 be too big? I eventually wanna stroke it to a 347 and would rather buy once if possible.

Thanks...

fogged306 · May 8th, 2011, 01:11 PM

You'll need the right cam if you're still 302 cubes. Too much intake duration and it will be lazy. You need something with decent lift and shorter duration on the intake to keep cylinder pressure up when using larger heads like that on a smaller cube engine. The OEM's have been doing it for a while now, so you don't need to worry about having too much head for your 302 as long as the valve events are correct. I would talk to a cam grinder about a cam if you run those heads on your engine. Done right, it'll scream. Wrong cam and it can be unimpressive.

FastStang91Lx · May 8th, 2011, 05:03 PM

My combo is 306, tw 185's track intake, stage 2 cam and flat top pistons. Great heads for the 347 future stroker that I WAS going to do before I decided to go 351/408. Going to send mine out in the future.

dennislv · May 8th, 2011, 10:51 PM

So I'm kind of confused here...

Trick Flow Specialties TFS-51400015 - Trick Flow® Twisted Wedge® Track Heat® 190 Cylinder Heads for Small Block Ford - Overview - SummitRacing.com
with
Trick Flow Specialties TFS-51402001 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L - Overview - SummitRacing.com

Would be ok or no? I'm going to Summit Tuesday morning and don't wanna fuck up.

I also have a 100 shot nitrous kit I want to use eventually.

Are the 190's too big? Should I go with the 170s? The price difference between the 170's and the 190's is like $150 whereas he 185's are like $500 more than the 170's.

Thanks...

dennislv · May 8th, 2011, 10:51 PM

Keep in mind its a 306 with a stock/standard bottom end.

69fastback · May 8th, 2011, 11:02 PM

I don't think that cam is right for the larger heads (FAC190s, or the TW185s). IMO, you'd be best to run the big heads, and a custom cam. If you're set of the TFS cam, run the 170s, but the really limits your room to grow in the future.

302Army187 · May 8th, 2011, 11:05 PM

Originally Posted by dennislv

Is this setup (tw170s, tf stage 2 cam & tf intake) safe for say a 100 shot on the stock bottom end? What would be a safe amount? Thanks...

Originally Posted by 69fastback

100 shot would be fairly safe, with a good tune.

lawl, pretty much the same shit I got, except I have a victor intake, and im going to be spraying a 150 shot, 200 if I need too...................... on hyper pistons too

FastStang91Lx · May 8th, 2011, 11:21 PM

That's what I have, not saying that it's what you should use... just to keep it straight. The car isn't tuned yet, and I barely had it going last year before the snow flew, but I was happy with the results. I am only using the cam because it isn't/wasn't my final combo, so I wanted to use something that I knew would work. Power left on table, sure, but I didn't want to go custom because I was going to be changing so much up on the car. I also wouldn't use a track heat intake if my nitrous plate wasn't already for the street/track intakes. But I'm to cheap to buy a new plate and intake for this motor.

May 8th, 2011, 03:05 AM	#23
dennislv Regular 90 GT Join Date: Sep 2009 Location: Vegas Posts: 206 iTrader: 0 reviews	Is this setup (tw170s, tf stage 2 cam & tf intake) safe for say a 100 shot on the stock bottom end? What would be a safe amount? Thanks... __________________ Rewarding our friends, punishing our enemies.

May 8th, 2011, 12:33 PM	#26
dennislv Regular 90 GT Join Date: Sep 2009 Location: Vegas Posts: 206 iTrader: 0 reviews	So with my setup, would a TW185 be too big? I eventually wanna stroke it to a 347 and would rather buy once if possible. Thanks... __________________ Rewarding our friends, punishing our enemies.

May 8th, 2011, 05:03 PM	#28
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	My combo is 306, tw 185's track intake, stage 2 cam and flat top pistons. Great heads for the 347 future stroker that I WAS going to do before I decided to go 351/408. Going to send mine out in the future. __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

May 8th, 2011, 10:51 PM	#29
dennislv Regular 90 GT Join Date: Sep 2009 Location: Vegas Posts: 206 iTrader: 0 reviews	So I'm kind of confused here... Trick Flow Specialties TFS-51400015 - Trick Flow® Twisted Wedge® Track Heat® 190 Cylinder Heads for Small Block Ford - Overview - SummitRacing.com with Trick Flow Specialties TFS-51402001 - Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 5.0L - Overview - SummitRacing.com Would be ok or no? I'm going to Summit Tuesday morning and don't wanna fuck up. I also have a 100 shot nitrous kit I want to use eventually. Are the 190's too big? Should I go with the 170s? The price difference between the 170's and the 190's is like $150 whereas he 185's are like $500 more than the 170's. Thanks... __________________ Rewarding our friends, punishing our enemies.

May 8th, 2011, 10:51 PM	#30
dennislv Regular 90 GT Join Date: Sep 2009 Location: Vegas Posts: 206 iTrader: 0 reviews	Keep in mind its a 306 with a stock/standard bottom end. __________________ Rewarding our friends, punishing our enemies.

May 8th, 2011, 01:11 PM	#27
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	You'll need the right cam if you're still 302 cubes. Too much intake duration and it will be lazy. You need something with decent lift and shorter duration on the intake to keep cylinder pressure up when using larger heads like that on a smaller cube engine. The OEM's have been doing it for a while now, so you don't need to worry about having too much head for your 302 as long as the valve events are correct. I would talk to a cam grinder about a cam if you run those heads on your engine. Done right, it'll scream. Wrong cam and it can be unimpressive.

May 8th, 2011, 11:02 PM	#31
69fastback Premium Member 1969 Mustang Mach 1 6.824@101.61 Join Date: Aug 2006 Location: Oklahoma jackass, get to driving Posts: 5,565 iTrader: 0 reviews	I don't think that cam is right for the larger heads (FAC190s, or the TW185s). IMO, you'd be best to run the big heads, and a custom cam. If you're set of the TFS cam, run the 170s, but the really limits your room to grow in the future. __________________ ./___ _ ____ ___ \. ( ]]] _ _ O _ _ [[[ ) \_ o _ _____ _ o _/ \|___\| ......... \|___\| http://www.youtube.com/watch?v=HyYU3...e_gdata_player

May 8th, 2011, 11:21 PM	#33
FastStang91Lx I Post Entirely Way Too Much 1991 Mustang LX 5.0 Join Date: Jan 2010 Location: Minnesota Posts: 5,572 iTrader: 2 reviews	That's what I have, not saying that it's what you should use... just to keep it straight. The car isn't tuned yet, and I barely had it going last year before the snow flew, but I was happy with the results. I am only using the cam because it isn't/wasn't my final combo, so I wanted to use something that I knew would work. Power left on table, sure, but I didn't want to go custom because I was going to be changing so much up on the car. I also wouldn't use a track heat intake if my nitrous plate wasn't already for the street/track intakes. But I'm to cheap to buy a new plate and intake for this motor. __________________ Point made in less than a few hours with minimal response. http://www.moddedmustangs.com/forums...ml#post4465184

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