V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Increasing displacement...

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Old Aug 21, 2006 | 04:06 AM
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aynjell
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Default Increasing displacement...

Hello all, i just wanted to know if it was possible to increase the displacement using some kind of modification. I've heard of people "stroking" thier motors. I guess it's a process of machining the engine block, or more specifically the cylinders until they are slightly bigger. What kind of displacement increse would this yield and what effect on the longevity of the engine could I expect if it were possible? Would 4.0 be doable?
Old Aug 21, 2006 | 10:19 AM
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Default RE: Increasing displacement...

I believe Super Six Motorsports has the 4.2L Stroker Kit. You have to take your engine to a machine shop to get the block honed/bored. What happens is the "drill" out the cylinders to fit bigger pistons in their. Also putting in longer rods increases the stroke length. Displacement is based on stroke and bore, so the more you have of either the bigger the displacement is. The 4.0 in the new stangs is strokable to atleast 4.3. That is without me doing any research so,

3.8/3.9 = 4.2L
4.0 = 4.3L
Old Aug 21, 2006 | 11:45 AM
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Default RE: Increasing displacement...

http://www.supersixmotorsports.com/
http://www.moranav6racing.com/catego...?CategoryID=16
Old Aug 21, 2006 | 12:20 PM
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Whoa... you can increase it all the way to 4.2? Sweet! That's enough to keep me in the 6 instead of switching to an eight. What would that be in horsepower... hrm... if 4.6 is roughly 260-ish, and 3.8 is 170-ish... that'd put it right at 200? give or take 10? Which kit should I buy, and how much should it cost... again, what will this do to engine longevity?
Old Aug 21, 2006 | 12:30 PM
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Default RE: Increasing displacement...

4.2 will give you 225 hp 255 ft/lbs
Old Aug 21, 2006 | 12:35 PM
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How much does the entire process cost me?
Old Aug 21, 2006 | 12:40 PM
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Default RE: Increasing displacement...

depends on where you get the parts from, if you get them from sites it will cost more, but you could get a 4.2 out of an f150 at a junkyard for cheap
Old Aug 21, 2006 | 02:21 PM
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Would the engine even be the same? Using a truck engine doesn't really sit with me. :S
Old Aug 21, 2006 | 02:57 PM
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Default RE: Increasing displacement...


ORIGINAL: aynjell

Would the engine even be the same? Using a truck engine doesn't really sit with me. :S
its the same engine, you could also get it out of a mini va
Old Aug 21, 2006 | 03:33 PM
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aynjell
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Default RE: Increasing displacement...

Well if that's the case, where can I get a mustang V8? If I'm going to be replacing the engine, might as well do it right.



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