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Moldex in Chicago I think does billet cranks for cheap $2500 or so Rods you can choose and pins you adapt. 0.075 is nothing a thicker or thinner specialty gasket can not handle. I have done this type of thing on a few motors The trick is rod mains must be the same or very close. You do not want...

From a 2006 to 2009 Rover 4.4 liter motor and from Darton Sleeve 92mm sleeves & stock 4.4 stroke (do not weld a cast crank)

Even nicer http://www.ebay.com/itm/8x-92mm-Bore-Cosworth-XB-V8-Forged-Pistons-Pins-Hillclimb-Turbo-Race-Engine-/231146842132?hash=item35d16ce814&vxp=mtr

http://www.ebay.com/itm/WISECO-FORGED-92MM-PISTONS-FOR-2002-05-SUBARU-IMPREZA-WRX-EJ20-EJ205-2-0L-TURBO-/260993027090?hash=item3cc4658c12&vxp=mtr Nice light 92mm much cheaper just need to figure our rod length I did this with 2 motors already. John

hi Joe, I love my Tbird I wanted stock coyote 5 liter power level but I see that is insanely impractical. What is beginning to make sense is refreshing a bottom end of a 4.4 and getting 20 or so more HP I live in Bulgaria it will probably be the only 2004 Tbird in Europe I just can not see the...

Better rotors and top level pads will stop you much faster

The machinist Steve for Darton Sleeve will put 92mm sleeves in your motor but on a 3.9 cooling passages may be an issue so look at the Rover 4.4 motor which is also an AJ V8 the crank on the 4.4 is 88.5mm I think which means you can offset grind it to 91mm enjoy slowly I will ship it to Bulgaria...

4,4 Rover engine crank is a stroker it can be offset to 91mm

Thank you this is great info Car is going to come to Bulgaria where labor is about $20 an hour for the top mechanics

You are 100% correct So I am going to ship the car to Bulgaria where I live & labor is cheap along with a rT56 I have the double OD will be nice john

Also will the motor run if I just refresh a 4.4 Rover bottom end and put it in for a litle more torque. If I take the car to Bulgaria labor is cheap and a 4.4 2006 to 2009 bottom end can be had for a G here. not much more HP but I can bold a 6R80 to it and maybe the new 8 speed. I really...

Thank you guys Hi, Because of you I learned it is stupid to sleeve the 3.9 as cooling passages are to small. I will send my Tbird to Bulgaria where I live it is a nice car. I will build a 1997 to 2002 hard top xk8 with a T56 for the USA and my occasional consulting contracts. I was...

This was good info I did not know about the cooling I am now thinking 5.0L cayote motor $7,999.00

Only non supercharged jag motors got vvt no need on a supercharged My tbird has 48 degree vvt the earlier vvt vvt was like 18 degrees

Measure them up any reputable forged piston manufacturer will make a set for around $700

SO from what I am hearing most every mod to the 3.9 does not make sense So my question is if I bore and stroke a block to 4.8 and swap it into my 2004 thunderbird with no other mods will the computer still work correctly? I think that would give it a little more torque. The transmission will...

My shops have 2 T56 of mine that are freshly rebuilt one is going into my Group 44 TR8 google Lanocha racing to see a finished one. Mine will be metalic Jaguar British racing green. What I realy want is the new 8 speed as I live in Europe. Clearly from what you say it is not practical. I will...

THank you for the information most of you are correct yet you have not done your homework, Darton will sleeve the 3.9 to a 92mm bore my machinist has looked at the Rover 2006 to 2009 crank and with a small ofset grind it will reach 91mm. Supercharging in a Thunderbird is a NO GO as it is just to...

Hi Has anyone done this I know the 5 & 6 speeds are the same size Please give advice. John

Hi I have a ford 3.9 in my Thunderbird. I plan on sleeving and stroking it to 4.8 I want to cut the cams but do not know how far I can go without needing an engine controller. I also want keep the VVT as this is a street car. Also can I run 4 or 5 pounds of boost without a controller? I...