$455 Ported GT350 Throttle Body outright
$200 Porting Only (Send yours into us)
$160 for return customers or when you purchase with intake manifold porting
Core returns accepted for a $100 reimbursement (must be in clean, working condition)
Q: What do you port or bore it to?
A: They remain 87mm to aide in ease of tuning; the inlet/outlet tapers are changed; the throttle shaft is thinned and the throttle blade is modified.
Yields 321-325% CFM increase in flow with no drivability or tuning issues and in most cases can be run on a stock tune. It picks up 5-7 hp/7-9 ft lbs of torque with big gains and throttle response and mid-range torque that you can feel.