4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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I was reading that there is a cooling problem on the 4.6 heads, causing 7 & 8 to over heat. It's a flow problem and can be resolved but they said you have to pull the trans to do it. I would post the link but it's on another board and I don't think that would be to cool.
There's a problem with the heads, so you need to pull the transmission? Stop to think about it for a second. The heads can be pulled without removing the engine.
I haven't heard of this problem, and 7 & 8 are usually not trouble cylinders... You would have to be running your stang real hard all day to have a problem with it I would think.
Yes definately a cooling issue with the #7&8 because of poor coolant flow. Some guys will run a 1 step cooler plug in 7 & 8 to help with this. Search for the Coolant mod on Mod Depot and you'll find a few how to threads with pictures. It is really hard to do with the engine in the car.
I'll be doing it myself when the new engine is ready to go in.
1999 Cobra: Hypereutectic cast alloy shallow skirt with friction reducing coating on sliding surfaces
1999 GT: ???
Cobras starting in '99 used flat topped forged pistons, the GT's used the Hypereutectic cast alloy shallow skirt with friction reducing coating on sliding surfaces. I know this because I just had to replace one of the pisons in my '00 GT '99 GT's had SLIGHTLY less compression compared to '00, like a few tenths of a point difference.
New '11 GT owner, Eibach Pro Kit springs, Flowmaster Hushpower axle-back, 35% tint.
I am really not to impressed with the 99 cobras.. my neighbor had one with a long list of bolt ons and i walked him with my 99GT that has exhaust and intake!! a month later he sold it and got a 03 cobra.. now the tables have turned
Someone couldn't drive their Cobra,of should have fixed whatever was wrong with it.
And about swapping the 4v heads onto a 2v motor, I asked that question and apparently the coolant passages wouldn't line up between the two different blocks/heads, so swapping one for the other isn't an option, unless you feel like rebuilding a motor once a week.
bolt on cammed 5.0 with 125 shot.
351w build starting
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