didnt they bore and stroke a s197 on horsepower tv last week or the weekbefore and it ended up putting 5xx at the wheels?

 

From what ive heard, our 4.6 motors dont respond hardly at all to being stroked.

 

the combustion chamber is between the piston and the head where the explosion happens


at least thats what i thought

 

Did they ever dyno it?
I'm going this route in my 07gt

 

.my big bore (.160 over) stroker makes 416hp and now its getting ford gt heads and a sheetmetal intake manifold and bigger cams shooting for 500.

the 4v responds best to increased displacement the 2v hardly sees any improvement.

the BBS 3v made 360hp on horsepower tv

 

No Bill, the combustion chamber is in the head. It's the small dished out area that the valves are in. When you see heads in a catalog the list the combustion chamber volume in cc's. You could make an argument that the small space when piston is at TDC is technically part of the combustion chamber but when talking about heads it is accepted that the combustion chamber is in the heads.