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Old 06-12-2007, 12:12 AM   #1
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Ultimate NA build

This question is for Tom or anyone else with input.
Goal: To build the ultimate Streetable NA zetec SVT head or Zetec head.
FIrst, this is to determine the best NA route for max power not to start anything.

The question is, for NA, would it make since to use a ported SVT head since i dont think any cams are being made. Or will the normal head with bigger cams (ported and such) make more power.
I know the svt flows better,but is it enough to out way the bigger cams availabe for the zetec?
Also, what kind of compression is safe? I know the svt is overf 10.0 so whats the max?

thanks


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Old 06-12-2007, 06:22 AM   #2
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I think the ZX3 head would do just as good because the SVT head does not flow much better on the Exh side

If you are limiting this engine to 93 then about 180HP at the wheels is going to be your max , Doing a 2.3 stroker will be your best HP and TQ and I would take it to about 10.6

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Old 06-12-2007, 11:07 AM   #3
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Thats what I wanted to know. The only other question is the cam. On 93 octane, will you gain from using a crower stg 3 vs crower stg2?
Definetly want to go with a stroker kit, just dont have the money yet.
One more question. Will a zetec head bolt to a SVT block? Ive found a few bottom ends for cheap. It would let me run a higher comp with better internals. Just dont know if the head will bolt up.
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Old 06-12-2007, 04:23 PM   #4
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Yes the head will bolt on and all will work but save your money the only thing better is the rods and with the 93 octane limit the ZX3 rods will be fine

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Old 06-12-2007, 07:14 PM   #5
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Thanks, ill just buy the high comp pistons if I need more compression. Thanks, for all the help.
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Old 06-12-2007, 07:20 PM   #6
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Keep this thread going through the buildup please! Finding out info from the both of you has been food for the brain.
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Old 06-13-2007, 10:28 AM   #7
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If I stick with this plan I will definetly post updates.
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