For sale is a set of six (6) race-quality stainless steel intake valves for the Ford 2.9L OHV V-6 engines found in Rangers, Bronco IIs, and Scorpios. These valves have a head diameter of 1.825" (46.35mm) with stock length and stock valve stem diameter. We arrived at this head diameter after trying smaller and larger diameter valves, lots of R&D porting on a test head, and flow testing all of our results. With moderate cleaning up and porting of intake ports, we saw SCFM numbers of:
101.53 at 0.200" valve lift
143.59 at 0.300"
176.55 at 0.400"
182.70 at 0.500"
185.37 at 0.550"
186.03 at 0.600"