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Old 05-14-2012, 06:57 PM   #1
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Ported vs tfs

Would the twisted wedge heads yield as much power as ported pi heads
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Old 05-14-2012, 07:00 PM   #2
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More I'm sure...
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Old 05-14-2012, 08:08 PM   #3
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Re: Ported vs tfs

More by far. There is a reason that they cost so much money.
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Old 05-14-2012, 08:10 PM   #4
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Reports with dyno sheets showing tfs heads reaching 330-360 hp
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Old 05-14-2012, 11:35 PM   #5
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Re: Ported vs tfs

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Originally Posted by 2002VertGT View Post
Reports with dyno sheets showing tfs heads reaching 330-360 hp
+1
Amazing power for an N.A 2V.
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Old 05-15-2012, 03:38 AM   #6
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Ported pi heads only flow about 250 cfm at a stage 3 port which is about as big as it gets. Tfs heads flow nearly 260 out of the box before porting and on top of that with the way the valves are placed you can run a super massive lift cam and not worry about clearance.
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Old 05-16-2012, 04:35 PM   #7
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Quote:
Originally Posted by 2002VertGT
Reports with dyno sheets showing tfs heads reaching 330-360 hp
Know which they were? I think there's 2 types for NA. I've been eying them.
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Old 05-16-2012, 09:47 PM   #8
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Know which they were? I think there's 2 types for NA. I've been eying them.
No I don't, sorry..
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Old 05-17-2012, 08:28 PM   #9
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If you are staying NA get the 38cc ones. They will bump up your compression to around 10.3:1. If you plan to go FI then get the 44cc set
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Old 05-21-2012, 06:13 PM   #10
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Quote:
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If you are staying NA get the 38cc ones. They will bump up your compression to around 10.3:1. If you plan to go FI then get the 44cc set
Can I use 44cc as NA then go FI ltr or FI have to FI right away? I'd like to keep my options open. Lots a $ for tfs
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Old 05-21-2012, 08:37 PM   #11
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Re: Ported vs tfs

the 44cc heads keep your compression stock(if your on stock shortblock) and the 38cc heads bump your compression about to around 10:5 like stated above..(if your on stock shortblock)

also some correction trickflow heads out the box flow 242 on the intake and 203 on the exhaust..that is at 600 lift...
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Old 05-22-2012, 04:31 PM   #12
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Quote:
Originally Posted by LAS97GT

Can I use 44cc as NA then go FI ltr or FI have to FI right away? I'd like to keep my options open. Lots a $ for tfs
44cc will work wonderful on stock if you plan to go FI down the road. Just get some forged internals
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Old 06-14-2012, 05:02 PM   #13
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Quote:
Originally Posted by CodyNelson

44cc will work wonderful on stock if you plan to go FI down the road. Just get some forged internals
Thanks!! That's fits my plan. Take a look. I want to build 350-400 NA. It's going to be a challenge, but I have plans already. Thanks again.

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Old 06-14-2012, 11:51 PM   #14
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Re: Ported vs tfs

Stock 02 GT motor. stock Comp 9.6-9.8:1

44cc TF heads-9.4:1
38cc TF heads-10.2:1

I wouldn't hesitate to run Boost on either of those ratios...just make sure the tune is good and 93 octane is a available.

Also for those wondering...

96-98 NPI shortblocks with stock heads-9.6-9.8:1 como

44cc TF heads-10:1
38cc TF heads-11:1
PI Heads-10.3

And on 03-up 32v shortblocks (mach 1, Avaitor, Marauder) 10.1:1

TF 44cc-11.4:1
TF 38cc-12.7:1
PI heads-11.8:1

Teksid Shortblocks...(mark Vii, 99/01 Cobra, 96-98 Cobra)-9.6-9.8:1

TF 44cc-10.8:1
TF 38cc-11.9:1
PI heads-11.1:1

HOpe this helps. You can mix and match some good bottom ends with PI/TF heads and get some good compression to suit whatever you want to do. Good luck!
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Old 06-15-2012, 09:29 AM   #15
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Re: Ported vs tfs

Great info!
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Old 06-16-2012, 02:34 PM   #16
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+1
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