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4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

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Old 01-12-2012, 04:17 PM   #11
Bpohlman13
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Its lookin nice! Dont forget, your front end of your car is going to rise slightly do to the lighter engine. What are you setting your car up for? Drag racing? Twisties?

What are you going to do as far as exhaust? Lts?

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Old 01-12-2012, 04:46 PM   #12
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yea, this would be like throwing flat tops in your current motor. you do need a stae 3 cam or bigger because of the compression. guys, read the thread i posted in the op.
yea the car is setup for twisties. there will be updates later tonight, with pics!
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Old 01-12-2012, 06:20 PM   #13
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Originally Posted by Jay-rod427 View Post
Didn't Mark 8's have the the TB at the back of the engine? Also why did you buy a 4V complete engine just to put 2V PI heads on it, or am I missing something?
93-95 had the throttle body at the back, 96-98 got a revised intake manifold like the one you see in the pics.
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Old 01-12-2012, 06:45 PM   #14
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Originally Posted by smitty2919 View Post
93-95 had the throttle body at the back, 96-98 got a revised intake manifold like the one you see in the pics.
Incorrect. The 93-96 had the old style intake, the 96 got the "Intech" badging, but nothing else; the 97-98 had the new style intake.
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Old 01-12-2012, 07:07 PM   #15
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Good things to know. Thanks guys.
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Old 01-12-2012, 10:15 PM   #16
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update:
so i can run my cams at 108 centerline without ptv contact, i done this:

i took a intake valve im not using and grind flats on the upper part of the stem
Click the image to open in full size.

i used a hex quickdisconnect collor to drive the valve
Click the image to open in full size.
Click the image to open in full size.

i then cut out 80 grit sand paper with the sticky on the back side and attached it to the valve

Click the image to open in full size.

i then installed the valve in a spare bare head, put the head onthe engine with the locating dails and put the quick disconnect on the valve. i used drill to spin the valve to make my own valve reliefs.
Click the image to open in full size.

i repeated the process for each cylinder. i cut the reliefs .050-.058 deep
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Old 01-12-2012, 11:29 PM   #17
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Nice! for each piston you did, did you bring it upto tdc first? Because if not, they will be off and wont do anything.
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Old 01-12-2012, 11:34 PM   #18
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yea, every piston was brought up to tdc
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Old 01-13-2012, 05:58 AM   #19
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Quote:
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So i could get a mark 8 motor and throw 2v heads on it and everything else will be the same as stock then? all the connections and everything?
This would be a very bad idea with boost, the stock shortblock wont handle it with a compression that high.
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Old 01-13-2012, 09:51 AM   #20
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This would be a very bad idea with boost, the stock shortblock wont handle it with a compression that high.
Yeah 11-1 is high for boost. I just didnt know that the CR would be that high just by putting a 4v short block in
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Old 01-13-2012, 09:51 AM
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