[kool_guy_70]

Ok so I need to replace head gasket, I need to know what bore the motor is, I remembered when I out a canton pan on the car I could see the JE piston part number I took a pic just in case... well just in case is happening, when I refered to the number on JE website its a .20over 5.4! the car is a 99 cobra.... UMMMM WTF So does anyone out there know what kind of rod setup or what is going on? The block is alluminum which leads me to believe its the 4.6 I bought the car with the motor already built it had a procharger and I went turbo with it, so low compresiion but I am confused and I wont have the car here again till next week so I cant really do much but get opinions, the numbers on the rods are blurry in my pics but I think 7292s or 72928 I dunno niether pull anything up the piston number is 227127 which comes up everywhere most important on JE site, So please let me know if you have an answer Thanks! if you think you could read the rod numbers better I can send the pics...

[gilomach]

you have yourself the answer 5.4 20 over.to know rod,and piston set up i think you need to take it apart.

[kool_guy_70]

Well the 5.4 is the same bore... .20 over is 3.572 so Im thinking somehow a 4.6 block with 5.4 piston and some kind o rod/crank setup that is allowing this.... I really am not sure I was hoping this was maybe a trick somebody knew about to make power or at least hopefully can put the pieces together a bit better all I do know is its alluminum block, thoose are definately the correct part numbers I listed for the pistons, the motor runs, and I am not sure of the rest...

[gilomach]

i am not sure what you mean,but i know that the svt guys use a lot of different parts in the engines they build.so really nobody knows but that guys that put it together at the plant.write down the vin number and take it to the nearest ford dealership parts dept.they'll know which gasket part number you need.

[ITLRUN]

Just edit your thread, and upload the pics here, Mike. SCT Tuner.