Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

416" build

Old Aug 2, 2010 | 01:40 AM
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Default 416" build

I just received my 416 short block and for economically reason i want to stick with stock heads for now tell i get more cash and decide what is the best for me. I have two heads laying around me LS3 and LS7 heads and both are stock non ported so what do you think is better to go with for F/I application?
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Old Aug 2, 2010 | 01:49 AM
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what is your bore? Im pretty sure stock Ls7 heads have to have a 4.100 bore or larger for the valves to clear
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Old Aug 2, 2010 | 02:13 AM
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It is 4.07"

Also i have Trick Flow 235cc LS1 heads. CNC ported, as i know the heads flow 350 CFM.
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Old Aug 2, 2010 | 02:15 AM
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416 is bad *** my bro just did a 421ci iron block and he went with ls3 heads.
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Old Aug 3, 2010 | 05:02 PM
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sick build it will make good power love ls motors
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Old Aug 4, 2010 | 10:59 AM
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Originally Posted by MoeDenali
It is 4.07"

Also i have Trick Flow 235cc LS1 heads. CNC ported, as i know the heads flow 350 CFM.
I dont understand your thread. So you are saying you have 3 different sets of heads, one of which is trickflow? What intake(s) do you have? I would run the trick flows for sure. You are a bit on the thin side of bore diameter for the LS7.
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Old Aug 4, 2010 | 11:15 AM
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Originally Posted by MoeDenali
It is 4.07"

Also i have Trick Flow 235cc LS1 heads. CNC ported, as i know the heads flow 350 CFM.
I think it would be VERY hard to get LS1 heads to flow 350CFM assuming these are TFS ported LS1 castings. You might want to get them independently flowed to help your decision.
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Old Aug 5, 2010 | 12:30 AM
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Originally Posted by xfactor_pitbulls
I dont understand your thread. So you are saying you have 3 different sets of heads, one of which is trickflow? What intake(s) do you have? I would run the trick flows for sure. You are a bit on the thin side of bore diameter for the LS7.
Yes i have three sets of heads, the trick flow comes with Fast intake, and the other two heads came with stock intakes.
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Old Aug 5, 2010 | 07:06 PM
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I would think the TFs would be more torque .. Nice small port.
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Old Aug 7, 2010 | 10:47 AM
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Bolt the TFS 235's and the FAST on there and don't look back! Just make sure you get a cam speced for cathedral port heads. Check with Pat G or Geoff at EPS, they will fix you up with a proper cam!

Jimbo
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