350-385 HP explorer motor

[jayh]

the gt40 iron head only flows around 190cfm at peak in stock form.
the gt40x head flows around 220cfm at peak

this is where the 40hp is coming from

the 300ish from the iron gt40setup is with a cam

[89crownlx]

the gt40 iron head only flows around 190cfm at peak in stock form.
the gt40x head flows around 220cfm at peak

this is where the 40hp is coming from

the 300ish from the iron gt40setup is with a cam

Thank you I didn't know the flow figures.