Throttle Body

[XxApolloxX97]

So I'm 5.4 swapping my 01 gt and I plan on spinning it to 7500 rpms my question is would a 90mm throttle body be a good size for my build?

 

[HawkX66]

To calculate throttle body size by engine displacement in cubic inches:

To calculate throttle body size by engine displacement in liters:

or, if you have math issues...

http://www.hipermath.com/math_center/racing_calculations

 

[wmburns]

2V or 4V?

NA or boosted.

I believe a 4.6 could make it up to 7,500 but are you sure it's even possible to spin a 5.4 that fast. Might be wise to do your home work on just how much faster the pistons have to go up/down to reach that RPM.

 

[XxApolloxX97]

2V or 4V?

NA or boosted.

I believe a 4.6 could make it up to 7,500 but are you sure it's even possible to spin a 5.4 that fast. Might be wise to do your home work on just how much faster the pistons have to go up/down to reach that RPM.

I took the whole block apart I have a cobra jet crank aftermarket rotating assembly and 2v ported pi heads sorry I wasn't fully descriptive in the question. They have 4.6 spinning 10k a 5.4 spinning 8k shouldn't really be a problem after a good bottom end build